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Motorola GM338, Service Manual

The Motorola GM338, a versatile communication device, designed for seamless two-way radio communication, is now even more accessible with our free service manual download. Enhance your user experience with this comprehensive manual, which can be easily downloaded from our website, manualshive.com, providing all the necessary instructions for optimal use.

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C

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 Lists

4-2

5

20 Vpp

18 Vpp

25 Vpp

25 Vpp

190 Vpp

180 Vpp

J1401

1.8V-2.1V

1.8V-2.1V

3.7V-3.9V

2.5 Vpp

5 Vpp

90 Vpp

10 Vpp

Peak-to-Peak Voltages (Vpp) are typical values as

could be measured with an oscilloscope under

the following conditions:

1.) Battery Voltage = 13.6 Volts

2.) Test Channel 11, i.e. High Power @ 46.125 MHz

DEVICE NEAR INSIDE OF RADIO

DEVICE NEAR OUTSIDE OF RADIO

0

E1403

R1469

C1404

.01uF

C1476

0.1uF

C1416

30pF

137.876nH

L1421

FN0:NP

D1402

1uF

C1425

10

R1421

3.3K

R1464

120nH

FN0:NP

R1483

240

L1405

R1404

51

R1423

10

10uF

33pF

C1454

C1462

220

R1444

3.3K

0.1uF

C1460

R1479

C1458

C1473

0.1uF

10uF

300pF

180pF

MOSBIAS_2_PA_1

C1478

C1451

10uF

C1459

C1427

240pF

180

R1453

PASUPVLTG

3.3K

R1477

R1449

TP1402

390

430pF

C1417

390

R1458

270pF

C1412

27K

R1425

C1433

1uF

300pF

C1477

R1445

6.2K

L1426

18nH

MC33072

U1402-2

6

5

7

8

4

27K

R1424

1uF

C1475

10K

RXIN_PA_1

C1428

R1478

U1402-1

MC33072

2

3

1

8

4

240pF

.01uF

100

R1440

C1424

C1448

Q1404

FN0:NP

470pF

R1484

1K

220pF

C1479

C1406

470pF

C1437

FN0:NP

330pF

C1407

.01uF

24pF

C1469

1uF

C1452

R1473

10

R1457

10

R1463

12K

L1419

27uH

R1441

10K

FN0:NP

16pF

C1455

470pF

C1447

FN0:NP

L1424

36.54nH

R1414

10

10

R1412

FN0:NP

.01uF

C1461

C1485

10K

R1406

.01uF

D1401

MOSBIAS_2

.01uF

C1457

R1411

L1406

250.974nH

10K

C1414

.01uF

10K

R1407

L1416

18nH

R1415

10

FN0:NP

C1466

.01uF

51pF

C1456

R1482

0

R1416

10

.01uF

C1405

1uF

C1432

3pF

R1446

5.6K

C1450

C1401

.01uF

FN0:NP

68pF

C1467

180

R1455

MOSBIAS_3

TP1403

470pF

C1440

R1470

2.4K

FN0:NP

R1422

10

10

R1420

R1451

180

C1470

R1460

1%

0.1

1uF

88.470nH

L1414

180

R1454

C1426

1uF

.01uF

C1422

FN0:NP

C1413

.01uF

L1413

88.470nH

C1430

240pF

.01uF

C1434

C1419

.01uF

R1448

150K

FN0:NP

10

R1418

39K

FN0:NP

C1486

R1466

C1408

0.1uF

FN0:NP

330pF

PASUPVLTG_PA_1

E1401

RXIN

.01uF

C1471

.01uF

C1468

R1417

10

18nH

L1415

C1443

130pF

130pF

C1444

172.891nH

L1420

C1431

.01uF

R1475

10

R1442

10

R1419

100

.01uF

24pF

C1446

66.389nH

L1418

C1420

C1403

6.2pF

R1443

FN0:NP

FN0:NP

1K

C1421

.01uF

820

R1450

C1442

120pF

R1402

390

10

R1413

R1468

2.2K

FN0:NP

TP1401

2200pF

C1484

R1447

0

L1402

4.7uH

S3

S4

.01uF

C1402

Q1402

D

G

GND1

GND2

S1

S2

MOSBIAS_3_PA_1

0.1uF

C1472

82pF

C1480

C1481

82pF

C1449

110pF

1uF

C1482

1uF

C1463

1uF

C1435

.01uF

C1445

FN0:NP

C1439

470pF

R1467

39K

FN0:NP

FN0:NP

6.8nH

L1401

L1422

115.581nH

R1472

10K

C1438

470pF

C1441

220pF

M1401

HEATSINK

POS

.01uF

C1474

TXINJ_PA_1

R1409

.01

18nH

L1417

R1474

10

100pF

C1453

51

R1405

R1476

10

3

VG2

81.930nH

L1423

10

NC3

15

NC4

16

RFIN

6

RFOUT1

7

RFOUT2

1

VCNTRL

14

VD1

2

VG1

EP

17

11

G2

4

GND1

5

GND2

12

GND3

13

GND4

8

NC1

9

NC2

U1401

30C65

.01uF

C1464

R1459

390

L1403

C1465

1uF

180nH

4.7uH

L1408

120nH

L1404

FN0:NP

R1471

0

FN0:NP

130

R1410

C1409

68pF

.01uF

C1436

240pF

C1429

.01uF

C1423

S4

FN0:NP

C1418

510pF

D

G

GND1

GND2

S1

S2

S3

0.1uF

Q1403

C1415

0.1uF

C1410

Q1401

18nH

27K

L1425

R1480

3.3K

R1465

PCIC_MOSBIAS_1

9V3

PASUPVLTG

VCNTRL

FSWB2

Vint

U_PREDRIVER

U_DRIVER

PASUPVLTG

MOSBIAS_2_SW

MOSBIAS_3_SW

MOSBIAS_1_SW

TXINJ

PASUPVLTG

U_DRIVER

U_PREDRIVER

FSWB

9T1

FL0830695O

Low Band Range 

3 (42-50 

M

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eet 1 of 2

Summary of Contents for GM338

Page 1: ...GM328 GM338 GM398 Mobile Radios Detailed Service Manual 6804112J18 E December 2003 ...

Page 2: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola prod ucts shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copy...

Page 3: ...lemented in this manual since the previous edition Edition Description Date 6804112J18 O Initial edition 6804112J18 E Added Document History section Dec 2003 Changed to latest Safety Information Feb 2002 Added GM328 model information to VHF UHF1 and UHF2 bands ...

Page 4: ...THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 5: ... 4 VHF Service Information Section 5 UHF Band 1 Service Information Section 6 UHF Band 2 Service Information Section 7 Low Band Service Information Section 8 VHF 45W Bipolar Service Information Section 9 UHF Band 1 40W Bipolar Service Information Section 10 UHF Band 2 40W Bipolar Service Information Section 11 UHF Band 1 40W LDMOS Service Information Section 12 UHF Band 2 40W LDMOS Service Informa...

Page 6: ...THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 7: ...GM328 GM338 GM398 Mobile Radios Service Maintainability Issue December 2003 ...

Page 8: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 9: ...operly can cause biological damage Very high levels of x rays for example can damage tissues and genetic material Experts in science engineering medicine health and industry work with organizations to develop standards for safe exposure to RF energy These standards provide recommended levels of RF exposure for both workers and the general public These recommended RF exposure levels include substan...

Page 10: ...mmunications Commission Code of Federal Regulations 47 CFR part 2 sub part J American National Standards Institute ANSI Institute of Electrical and Electronic Engineers IEEE C95 1 1992 Institute of Electrical and Electronic Engineers IEEE C95 1 1999 Edition International Commission on Non Ionizing Radiation Protection ICNIRP 1998 Ministry of Health Canada Safety Code 6 Limits of Human Exposure to ...

Page 11: ...ons are limited to vehicles with clearly defined flat trunk lide and in some cases to specific radio models and antennas See the Radio Installation Manual for specific information on how and where to install specific types of approved antennas to facilitate recom mended operating distances to all potentially exposed persons Use only the Motorola approved supplied antenna or a Motorola approved rep...

Page 12: ... site antenna is sensitive to external RF energy or if any procedures need to be followed to eliminate or mitigate the potential for interaction between the radio transmitter and the equipment or device Facilities To avoid electromagnetic interference and or compatibility conflicts turn off your radio in any facility where posted notices instruct you to do so Hospitals or health care facilities ma...

Page 13: ...ve atmospheres include fueling areas such as below decks on boats fuel or chemical transfer or storage facilities and areas where the air contains chemicals or particles such as grain dust or metal powders Areas with potentially explosive atmospheres are often but not always posted Blasting Caps And Blasting Areas To avoid possible interference with blasting operations turn off your radio when you...

Page 14: ...vi THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 15: ...ty 1 2 2 4 Technical Support 1 2 2 5 Further Assistance From Motorola 1 2 3 0 Radio Model Information 1 3 Section 2 Maintenance 1 0 Introduction 2 1 2 0 Preventive Maintenance 2 1 2 1 Inspection 2 1 2 2 Cleaning 2 1 3 0 Safe Handling of CMOS and LDMOS 2 2 4 0 General Repair Procedures and Techniques 2 2 5 0 Notes For All Schematics and Circuit Boards 2 5 Section 3 Service Aids 1 0 Recommended Test...

Page 16: ...viii THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 17: ...ctions are for guidance purposes only In instances where the product is covered under a return for replacement or return for repair warranty a check of the product should be performed prior to shipping the unit back to Motorola This is to ensure that the product has been correctly programmed or has not been subjected to damage outside the terms of the warranty Prior to shipping any radio back to t...

Page 18: ...ble parts are available for that kit or assembly All orders for parts information should include the complete Motorola identification number All part orders should be directed to your local AAD office Please refer to your latest price pages 2 4 Technical Support Technical support is available to assist the dealer distributor in resolving any malfunction which may be encountered Initial contact sho...

Page 19: ...ws one mobile radio model number and its specific characteristics Table 1 1 Radio Model Number Example AZM25KHF9AA5 Type of Unit Model Series Freq Band Power Level Physical Packages Channel Spacing Protocol Feature Level AZ M 25 K VHF 136 174MHz H 1 25W C GM328 9 Program mable AA Conventional 1 GM328 R UHF1 403 470MHz K 25 60W F GM338 5 GM338 S UHF2 450 527MHz N GM398 8 GM398 B LB R1 29 7 36MHz C ...

Page 20: ...1 4 Radio Model Information THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 21: ... cleaned whenever a periodic visual inspection reveals the presence of smudges grease and or grime The only recommended agent for cleaning the external radio surfaces is a 0 5 solution of a mild dishwashing detergent in water The only factory recommended liquid for cleaning the printed circuit boards and their components is isopropyl alcohol 70 by volume 1 Cleaning External Plastic Surfaces The de...

Page 22: ... CMOS circuits and are especially important in low humidity conditions DO NOT attempt to disassemble the radio without first referring to the CMOS CAUTION paragraph in the Disassembly and Reassembly section of the manual 4 0 General Repair Procedures and Techniques Parts Replacement and Substitution When damaged parts are replaced identical parts should be used If the identical replacement compone...

Page 23: ...he pads To replace a chip component using a soldering iron 1 Select the appropriate micro tipped soldering iron and apply fresh solder to one of the solder pads 2 Using a pair of tweezers position the new chip component in place while heating the fresh solder 3 Once solder wicks onto the new component remove the heat from the solder 4 Heat the remaining pad with the soldering iron and apply solder...

Page 24: ...f the heat grab the part with a pair of tweezers and turn off the vacuum pump 9 Remove the circuit board from the R1070 circuit board holder To replace the shield 1 Add solder to the shield if necessary using a micro tipped soldering iron 2 Next rub the soldering iron tip along the edge of the shield to smooth out any excess solder Use solder wick and a soldering iron to remove excess solder from ...

Page 25: ...gulated 3 3V Supply Voltage for Voice Storage 5V Regulated 5V Supply Voltage for RF Circuitry 5V Regulated 5V Supply Voltage Control Head 5V RF Regulated 5V Supply Voltage for RF Circuitry 5V SOURCE 5V Signal to Switch On Control Head 5VD Regulated 5V Supply Voltage for Digital Circuitry 9V3 Regulated 9 3V Supply Voltage 9V3FLT Filtered 9 3V Supply Voltage A 13 2V Supply Voltage ADDR µP Address Li...

Page 26: ...tion Line BWSELECT Signal to select between the Ceramic Filter Pairs CH ACT Channel Activity Indicator Signal Fast Squelch CH KP ID Control Head Keypad ID Data Lines CH REQUEST Control Head Request from Control Head µP CLK Clock Signal CNTLVLTG PA Power Control Voltage CNTR AUDIO Audio Lines of the Controller COL x Keypad Matrix Column x CSX Chip Select Line PCIC FRACN DATA Data Signal DC POWER ON...

Page 27: ...ut Signal FLAT TX RTN Flat TX Input from Option Board and Accessory Connector FLT A Filtered 13 2 V Supply Voltage GP x IN General Purpose Input x GP x IN ACC y General Purpose Input x from Accessory Connector Pin y GP x IN OUT ACC y General Purpose Input Output x from Accessory Connector Pin y GP x OUT General Purpose Output x GP x OUT ACC y General Purpose Input x from Accessory Connector Pin y ...

Page 28: ... WR LCD Read Write Control LED CNTRL LED Control Lines LED GREEN Green LED Control LED RED Red LED Control LED YELLOW Yellow LED Control LOCK Lock Detect Signal from Synthesizer LSIO Low Speed Clock In Data Out LVZIF CS LVZIF Chip Select not used MIC Microphone Input MISO Serial Peripheral Interface Receive Line MODIN Modulation Signal into the Synthesizer MOSBIAS 2 PA Bias Voltage for second Stag...

Page 29: ...W Read Write Signal for RAM Flash RAM CS RAM Chip Select RDY Service Request Line from Option Board REF CS Reference Chip Select not used RESET Reset Line ROW x Keypad Matrix Row x RSSI Received Signal Strength Indicator RX ADAPT Flat TX Path Disable during Transmitter Key up RX AUD RTN Option Board Input Output of Receiver Audio Path RX FLAT FILTERED AUDIO Flat or Filtered Audio to Accessory Conn...

Page 30: ...pply URX SND Filtered Audio Signal to Option Board VAG 2 5V Reference Voltage for Analog Circuitry VCOBIAS 1 Switch Signal from Synthesizer VCOBIAS 2 Switch Signal from Synthesizer VCOMOD Modulation Signal into VCO VCTRL VCO Frequency Control Voltage VDDA Regulated 5V for Digital Circuitry in RF Section VOLTAGE SENSE Voltage Sense Line from LCD VOLUME Volume Pot Output VOX Voice Operated Transmit ...

Page 31: ...oards 2 11 VSF Voltage Super Filtered 5V VSTBY 5V Supply for µP when the Radio is switched off 4 LAYER CIRCUIT BOARD DETAIL VIEWING COPPER STEPS IN PROPER LAYER SEQUENCE LAYER 1 L1 LAYER 2 L2 LAYER 3 L3 LAYER 4 L4 INNER LAYERS SIDE 1 SIDE 2 ...

Page 32: ...2 12 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 33: ...ommunications between radio and computer s serial communications adapter HLN8027_ Mini UHF to BNC Adaptor Adapts radio antenna port to BNC cabling of test equipment GPN6133_ Power Supply Provides the radio with power when bench test ing EPN4040_ Wall Mounted Power Supply Used to supply power to the RIB UK EPN4041_ Wall Mounted Power Supply Used to supply power to the RIB Euro 8180384J59 Housing El...

Page 34: ...requency deviation meter and signal gen erator for widerange troubleshooting and alignment R1072_ Digital Multimeter AC DC voltage and current measure ments R 1377_ AC Voltmeter 100µV to 300V 5Hz 1MHz 10Megohm input impedance Audio voltage mea surements WADN133 Delay Oscilloscope 2 Channel 40MHz bandwidth 5mV cm 20 V cm Waveform measure ments R1440_ 0180305F17 0180305F31 0180305F39 RLN4610 T1013_ ...

Page 35: ...GM328 GM338 GM398 Mobile Radios Controlhead Service Information Issue December 2003 ...

Page 36: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 37: ...rotection 2 4 3 0 Controlhead Model for GM338 2 4 3 1 Power Supplies 2 4 3 2 Power On Off 2 4 3 3 Microprocessor Circuit 2 5 3 4 SBEP Serial Interface 2 5 3 5 Keypad Keys 2 6 3 6 Status LED and Back Light Circuit 2 6 3 7 Liquid Crystal Display LCD 2 7 3 8 Microphone Connector Signals 2 7 3 9 Speaker 2 8 3 10 Electrostatic Transient Protection 2 8 4 0 Controlhead Model for GM398 2 9 4 1 Power Suppl...

Page 38: ...ntrolhead GM328 PCB 8486146B07 Schematics 4 3 Controlhead GM328 PCB 8486146B07 4 3 Controlhead GM328 Schematic Sheet 1 of 2 4 4 Controlhead GM328 Schematic Sheet 2 of 2 4 5 Controlhead PCB 8486146B07 Parts List 4 6 3 0 Controlhead GM338 PCB 8486155B06 Schematics 4 7 Controlhead GM338 PCB 8486155B06 4 7 Controlhead GM338 Schematic Sheet 1 of 4 4 8 Controlhead GM338 Schematic Sheet 2 of 4 4 9 Contro...

Page 39: ... the on off volume knob the microphone connector several buttons to operate the radio and several indicator Light Emitting Diodes LED to inform the user about the radio status To control the LED s and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor ...

Page 40: ...ns to operate the radio several indicator Light Emitting Diodes LED to inform the user about the radio status and a 14 character Liquid Crystal Display LCD for alpha numerical information e g channel number or call address name To control the LED s and the LCD and to communicate with the host radio the control head uses the Motorola 68HC11E9 microprocessor ...

Page 41: ...r Light Emitting Diodes LED to inform the user about the radio status and a Liquid Crystal Display LCD with 21 pre defined symbols and a 32 96 dot matrix for graphical or alpha numerical information e g channel number select code call address name To control the LEDs and the LCD and to communicate with the host radio the control head uses the Motorola 68HC11K4 microprocessor ...

Page 42: ...1 4 GM398 Model GCN6115_ THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 43: ...ed for a couple of seconds without losing RAM parameters Dual diode D0822 prevents radio circuitry from discharging this capacitor When the supply voltage is applied to the radio C0822 is charged via R0822 and D0822 To avoid that the µP enters the wrong mode when the radio is switched on while the voltage across C0822 is still too low the regulated 5V charge C0822 via diode D0822 2 2 Power On Off ...

Page 44: ... are provided by the individual keypads The MODB MODA input of the µP must be at a logic 1 for it to start executing correctly The XIRQ and the IRQ pins should also be at a logic 1 Voltage sense device U0832 provides a reset output that goes to 0 volts if the regulated 5 volts goes below 4 5 volts This is used to reset the controller to prevent improper operation 2 4 SBEP Serial Interface The host...

Page 45: ...eypad back light current is drawn from the FLT A source and controlled by 2 current sources The LED current is determined by the resistor at the emitter of the respective current source transistor 2 7 Microphone Connector Signals Signals BUS PTT IRDEC HOOK MIC HANDSET AUDIO FLT A 5V and 2 A D converter inputs are available at the microphone connector J0811 Signal BUS J0811 7 connects to the SBEP b...

Page 46: ...ing Diodes LED to inform the user about the radio status and a 14 character Liquid Crystal Display LCD for alpha numerical information e g channel number or call address name To control the LEDs and the LCD and to communicate with the host radio the controlhead uses the Motorola 68HC11E9 microprocessor 3 1 Power Supplies The power supply to the controlhead is taken from the host radio s FLT A volt...

Page 47: ...l ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action Pin VRH is the high reference voltage for the A D ports on the µP If this voltage is lower than 5V the A D readings will be incorrect Likewise pin VRL is the low reference for the A D ports This line is normally tied to ground If this line i...

Page 48: ...e way as a key press on the controlhead 3 6 Status LED and Back Light Circuit All the indicator LEDs red yellow green are driven by current sources To change the LED status the host radio sends a data message via SBEP bus to the controlhead µP The controlhead µP determines the LED status from the received message and switches the LEDs on or off via port PB 7 0 and port PA4 The LED status is stored...

Page 49: ... to the internal voltage regulator To set the voltage level of the regulator output V5 U0971 5 this voltage is divided by the resistors R0973 and R0974 and fed back to the reference input VR U0971 6 In addition the regulator output voltage V5 can be controlled electronically by a control command sent to the driver With the used configuration the voltage V5 is about 2V The voltage V5 is resistively...

Page 50: ...mming the µP may take actions like turning the audio PA on or off While the hang up switch is open line HOOK is pulled to 5 volts level by R0841 Transistor Q0841 is switched on and causes a low at µP port PA1 When the HOOK switch is closed signal HOOK is pulled to ground level This switches off R0841 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch The µP ...

Page 51: ...itches off the output of U0861 pin 1 When the host radio is switched on the voltage on line 5V SOURCE of about 5 volts switches on transistor Q0866 which in turn pulls input SHUTDOWN pin 3 to ground and switches on the output of U0861 Input and output capacitors C0861 C0862 and C0864 C0865 are used to reduce high frequency noise and provide proper operation during battery transients Diode D0861 pr...

Page 52: ...logue to digital converter ports A D on the µP They are labeled within the device block as PE0 PE7 These lines sense the voltage level ranging from 0 to 5V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action Pin VRH is the high reference voltage for the A D ports on the µP If this voltage is lower than 5V the A D r...

Page 53: ... way as a key press on the controlhead 4 7 Status LED and Back Light Circuit All the indicator LEDs red yellow green are driven by current sources To change the LED status the host radio sends a data message via SBEP bus to the controlhead µP The controlhead µP determines the LED status from the received message and switches the LEDs on or off via port PA 6 4 The LED status is stored in the µP s m...

Page 54: ...transfer is complete the µP terminates the chip select and the clock activities The display driver s power circuit provides the voltage supply for the display This circuit consists of a voltage multiplier voltage regulator and a voltage follower The regulator output voltage for the display can be controlled electronically by a control command sent to the driver The voltage level can be measured by...

Page 55: ...ff While the hang up switch is open line HOOK is pulled to 5 volts level by R0883 Transistor Q0872 is switched on and causes a low at µP port PA1 When the HOOK switch is closed signal HOOK is pulled to ground level This switches off R0883 and the resulting high level at µP port PA1 informs the µP about the closed hang up switch The µP will inform the host radio about any status change on the HOOK ...

Page 56: ...2 14 Controlhead Model for GM398 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 57: ...e switched on via ON OFF Volume Knob NO YES YES NO R0823 Pin TAB 5V R0823 Pin TAB1 when pressed 5V Check Replace Volume Pot R0823 Check Replace R0822 VR0822 D0822 NO YES J0801 Pin 2 10V Check Replace Q0821 Check Replace Q0822 R0821 YES NO J0801 Pin 2 5V Check Replace D0821 R0852 Press and hold On Off Volume Knob ...

Page 58: ...NO YES NO YES NO YES EXTAL U0831 Pin 31 8 00 MHz RESET TP0833 HIGH Check Replace C0833 R0832 U0831 Check radio controller Data Signal on J0801 Pin 5 BUS Data Signal on TP0836 SCI_RX NO Data Signal on TP0837 SCI_TX Check Replace R0831 U0833 U0831 Check Replace R0837 R0836 Check Replace U0831 Check Replace D0831 R0838 Measure with scope while rotating Volume Pot ...

Page 59: ...t be switched on via ON OFF Volume Knob NO YES YES NO R0823 Pin TAB 5V R0823 Pin TAB1 when pressed 5V Check Replace Volume Pot R0823 Check Replace R0822 VR0822 D0822 C0822 NO YES J0801 Pin 2 10V Check Replace Q0821 Check Replace Q0822 R0821 YES NO J0801 Pin 2 5V Check Replace D0821 R0852 Press and hold On Off Volume Knob ...

Page 60: ...NO YES NO YES NO YES EXTAL U0831 Pin 31 8 00 MHz RESET TP0833 HIGH Check Replace C0833 R0832 U0831 Check radio controller Data Signal on J0801 Pin 5 BUS Data Signal on TP0836 SCI_RX NO Data Signal on TP0837 SCI_TX Check Replace R0831 U0833 U0831 Check Replace R0837 R0836 Check Replace U0831 Check Replace D0831 R0838 Measure with scope while rotating Volume Pot ...

Page 61: ...s OK volume knob does operate indicator backlight is on but nothing on display YES NO YES NO V5 against 5V TP0973 between 6V and 7V Activity on Address Data lines A0 D0 D7 CS1 of U0971 Check for shortage U0831 U0971 Check LCD Assembly Check Replace C0971 C0973 R0972 R0973 R0974 U0971 ...

Page 62: ...me knob does operate indicator display is on but no backlight NO YES YES NO U0831 Pin 58 is toggling Base of Q0934 0 7V Check Replace R0847 C0843 R0943 Check for shortage U0831 YES NO Collector of Q0934 5V and 11V Check Replace Q0934 U0931 R0941 R0942 R0944 R0945 Check Replace Q0933 R0947 R0948 ...

Page 63: ...AB1 when pressed 5V J0801 PIN2 10V J0801 PIN2 5V Check Replace Q0853 R0853 YES NO YES NO YES NO Check Replace D0852 R0852 Check Replace Volume Pot R0854 Check Replace Q0851 Radio can not be switched on via ON OFF Volume Knob YES R0854 Pin TAB 5V NO Check Replace R0855 VR0855 D0855 C0856 Press and hold On Off Volume Knob ...

Page 64: ... audible on external speaker but volume knob does not operate and no indicators are on TP0876 5V NO YES U0871 Pin 73 EXTAL 8 MHz TP0866 0V NO Check Replace R0873 U0873 U0871 Check Replace R0866 C0866 Q0866 R0863 Check Replace R0861 R0862 D0861 C0861 C0862 U0861 C0863 C0864 C0865 NO YES YES A ...

Page 65: ...cessor cont Data Signal on J0801 Pin 5 BUS Data Signal on TP0877 SCI_RX Data Signal on TP0878 SCI_TX Check Replace D0872 R0887 YES YES YES NO NO NO Check Replace U0871 Check Radio Controller Check Replace R0888 R0889 Measure with scope while rotating Volume Pot A ...

Page 66: ...ivity on Address Data lines A0 D0 D7 CS1 of U0971 NO YES YES NO Check Replace Flex connection Resistors on Address Data lines and LCD Module Check Replace LCD Module Check for shortage U0871 Power Up Alert Tone is audible volume knob does operate indicator backlight is on but nothing is seen on the display ...

Page 67: ...Base of Q0943 0 7V Collector of Q0943 5V 11V Check Replace Q0941 R0955 R0957 YES YES YES NO NO NO Check Replace Q0943 U0941 R0941 R0943 R0949 R0951 Check for shortage U0871 Check Replace R0945 C0943 R0947 Power Up Alert Tone is audible volume knob does operate display is on but no keypad backlight ...

Page 68: ...Base of Q0963 0 7V Collector of Q0963 5V 11V Check Replace Q0961 R0975 R0977 YES YES YES NO NO NO Check Replace Q0963 U0941 R0961 R0963 R0969 R0971 Check for shortage U0871 Check Replace R0965 C0963 R0967 Power Up Alert Tone is audible volume knob does operate display is on but no display backlight ...

Page 69: ...lhead Diagrams and Parts Lists PCB Controlhead GM338 8486155B06 Main Board Top Side 8486155B06 Main Board Bottom Side Page 4 7 Page 4 7 SCHEMATICS Sheet 1 of 4 Sheet 2 of 4 Sheet 3 of 4 Sheet 4 of 4 Page 4 8 Page 4 9 Page 4 10 Page 4 11 Parts List 8486155B06 Page 4 12 Table 4 3 Controlhead Diagrams and Parts Lists PCB Controlhead GM398 8486178B03 Main Board Top Side 8486178B03 Main Board Bottom Si...

Page 70: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 71: ... J0801 1 2 P0801 Q0821 Q0822 Q0823 Q0841 Q0843 Q0871 Q0872 Q0873 Q0874 Q0875 Q0876 Q0877 Q0878 Q0879 Q0881 Q0885 R0810 R0811 R0812 R0813 R0814 R0815 R0816 R0821 R0822 R0824 R0825 R 0 8 3 1 R0832 R0833 R0834 R0835 R0836 R0837 R0838 R0839 R0841 R0842 R0843 R0844 R0845 R0847 R0849 R0852 R0853 R0854 R0861 R0862 R0864 R0866 R0867 R0871 R0872 R0873 R0874 R0875 R0876 R0877 R0878 R0879 R0880 R0881 R0885 T...

Page 72: ...uF J0811 1 1 C0823 01uF 2 0 6 2 C0809 NU 82pF Q0823 D0822 10 R0813 1 C1 3 C2 2 GND 4 R0812 CSTCC8 00MG U0833 22 5 6V 5 VR0821 100K R0853 8 5 6V VR0823 J0811 10 0 P0801 2 5 4 J0801 9 TP0837 INPUT 2 NC1 3 NC2 5 NC3 6 NC4 7 8 NC5 RESET 1 U0832 MC33064 GND 4 Q0821 J0811 6 J0801 10 J0801 6 JU0852 SWITCH JU0854 6 1 SWITCH C0804 470pF 0 R0852 100K C0817 82pF J0811 8 7 R0845 4 7K NU VR0811 33V 470pF NU 47...

Page 73: ...861 43K R0866 51K R0861 51K R0880 22K 7 P8 8 13K R0862 P1 1 P2 2 P3 3 P4 4 P5 5 P6 6 P7 6 P6 7 P7 8 P8 S0864 1 P1 2 P2 3 P3 P4 4 5 P5 P5 5 P6 6 P7 7 P8 8 S0863 P1 1 P2 2 P3 3 P4 4 P4 4 P5 5 P6 6 7 P7 P8 8 S0862 S0866 P1 1 P2 2 P3 3 270 green R0877 D0877 D0879 Q0877 red 270 R0878 Q0879 Q0878 yellow D0878 Q0873 R0879 270 R0871 270 Q0871 Q0872 8 2 red D0876 7 D0875 red red D0874 R0876 270 R0875 270 R...

Page 74: ...72 4813824A10 TSTR NPN 40V 2A B 50 150 Q0873 4813824A10 TSTR NPN 40V 2A B 50 150 Q0874 4813824A10 TSTR NPN 40V 2A B 50 150 Q0875 4813824A10 TSTR NPN 40V 2A B 50 150 Q0876 4813824A10 TSTR NPN 40V 2A B 50 150 Q0877 4813824A10 TSTR NPN 40V 2A B 50 150 Q0878 4813824A10 TSTR NPN 40V 2A B 50 150 Q0879 4813824A10 TSTR NPN 40V 2A B 50 150 Q0881 4813824A10 TSTR NPN 40V 2A B 50 150 Q0885 4813824A10 TSTR NPN...

Page 75: ...974 C0975 C0976 C0977 C0978 C0979 C0980 C0981 C0982 C0983 C0984 C0985 D0821 D0822 D0831 12 J0801 1 2 P0801 Q0821 Q0822 Q0823 Q0841 Q0843 Q0877 Q0878 Q0879 1 2 3 4 Q0931 Q0932 1 2 3 4 Q0933Q0934 R0810 R0811 R0812 R0813 R0814 R0815 R0816 R0817 R0821 R0822 R0824 R0825 R0831 R0832 R0833 R0834 R0835 R0836 R0837 R0838 R0841 R0842 R0843 R0844 R0845 R0847 R0848 R0849 R0850 R0851 R0852 R0853 R0854 R0855 R0...

Page 76: ...K 53 PD5_SS 54 PE0_AN0 13 PE1_AN1 15 PE2_AN2 17 PE3_AN3 36 PC2_AD2 37 PC3_AD3 38 PC4_AD4 39 PC5_AD5 40 PC6_AD6 41 PC7_AD7 42 PD0_RXD 47 PD1_TXD 11 PB2_A10 10 PB3_A11 9 PB4_A12 8 PB5_A13 7 PB6_A14 6 PB7_A15 5 PC0_AD0 34 PC1_AD1 PA1_IC2 63 PA2_IC1 62 PA3_OC5_OC1 59 PA4_OC4_OC1 58 PA5_OC3_OC1 57 PA6_OC2_OC1 56 PA7_PA1_OC1 PB0_A8 12 PB1_A9 NC3 26 NC4 32 NC5 35 NC6 44 NC7 48 NC8 60 NC9 1 PA0_IC3 64 CLK...

Page 77: ... P2 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 P8 SWITCH S0908 1 P1 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 7 P7 8 P8 SWITCH S0906 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 SWITCH S0903 43K 0 1 R0909 43K 130K R0904 130K NU R0910 NU R0905 R0906 51K R0901 51K R0908 22K R0903 22K R0902 13K R0907 13K P4 5 P5 6 P6 7 P7 8 P8 CH_C sheet 2 CH_B o 1 P1 2 P2 3 P3 4 P3 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S0909 1 P1 2 P2 3 P2 3 P3 4 P4...

Page 78: ...U D0943 Q0934 NU D0932 4 7K NU D0931 R0943 C0931 0 1uF 10 R0938 R0937 10 NU NU C0932 0 1uF R0936 10K R0932 NU D0949 NU 33K NU R0931 10K Q0932 MC33072 U0931 1 2 3 1 8 4 NU D0942 NU NU D0941 NU D0940 NU D0938 NU D0937 NU D0958 NU D0957 NU D0956 D0954 D0953 NU D0952 NU D0950 NU NU D0975 D0976 D0974 D0973 NU D0939 NU D0935 D0933 NU D0934 NU 0 1uF C0933 D0936 D0968 NU D0988 4 7K NU R0933 NU D0961 D0983...

Page 79: ...1 COM1_R2 COM2_R3 5 V5 7 VDD 8 VOUT 6 VR 13 VSS 17 WR NU 57 SEG8 58 SEG9 16 SR1 15 SR2 1 V1 2 V2 3 V3 4 V4 121 SEG72 122 SEG73 123 SEG74 124 SEG75 125 SEG76 126 SEG77 127 SEG78 128 SEG79 114 SEG65 115 SEG66 116 SEG67 117 SEG68 118 SEG69 56 SEG7 119 SEG70 120 SEG71 107 SEG58 108 SEG59 55 SEG6 109 SEG60 110 SEG61 111 SEG62 112 SEG63 113 SEG64 99 SEG50 100 SEG51 101 SEG52 102 SEG53 103 SEG54 104 SEG5...

Page 80: ...RH Q0841 4880048M01 TSTR NPN DIG 47k 47k Q0843 4880048M01 TSTR NPN DIG 47k 47k Q0877 4813824A10 TSTR NPN 40V 2A B 50 150 Q0878 4813824A10 TSTR NPN 40V 2A B 50 150 Q0879 4813824A10 TSTR NPN 40V 2A B 50 150 Q0933 4813822A08 TSTR PNP 25V 5AMJD210T4 Q0934 4813824A10 TSTR NPN 40V 2A B 50 150 R0810 0662057A76 13k 1 16W 5 R0811 0662057A90 51k 1 16W 5 R0812 0662057A09 22 1 16W 5 R0813 0662057A01 10 1 16W ...

Page 81: ...61 D0871 D0872 12 24 1 1 2 P0801 Q0851 Q0852 Q0853 Q0866 Q0871 Q0872 1 2 3 4 Q0941 1 2 3 4 Q0942 Q0943 Q0944 1 2 3 4 Q0961 1 2 3 4 Q0962 Q0963 Q0964 Q0991 Q0992 Q0993 R0811 R0812 R0813 R0814 R0815 R0816 R0817 R0818 R0821 R0822 R0823 R0824 R0825 R0826 R0827 R0828 R0831 R0832 R0833 R0834 R0835 R0836 R0837 R0838 R0840 R0852 R0853 R0855 R0856 R0861 R0862 R0863 R0866 R0870 R0871 R0872 R0873 R0874 R0875...

Page 82: ...64 PC3_DATA3 65 PC4_DATA4 66 PC5_DATA5 67 PC6_DATA6 68 PC7_DATA7 69 PD0_RXD 78 PD1_TXD 19 PB3_ADDR11 18 PB4_ADDR12 17 PB5_ADDR13 16 PB6_ADDR14 15 PB7_ADDR15 14 PBO_ADDR8 21 PC0_DATA0 62 PC1_DATA1 10 PA2_IC1 9 PA3_IC4_OC5_OC1 8 PA4_OC4_OC1 7 PA5_OC3_OC1 6 PA6_OC2_OC1 5 PA7_PA1_OC1 4 PB1_ADDR9 20 PB2_ADDR10 41 AVSS 52 E 72 EXTAL 73 IRQ 61 MODA_LIR 77 MODB_VSTBY 76 PA0_IC3 11 PA1_IC2 MC68HC11K4 U0871...

Page 83: ... 13K R0912 13K R0932 13K S0931 SWITCH 1 2 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 8 P8 SWITCH S0912 1 P1 43K R0904 R0905 130K R0911 51K 51K R0901 R0913 22K P2 2 P3 3 P4 4 P5 5 P6 6 P7 7 P8 8 8 P8 S0910 SWITCH P1 1 1 P1 2 P2 3 P3 4 P4 5 P5 6 P6 7 P7 P7 7 P8 8 SWITCH S0915 P1 1 P2 2 P3 3 P4 4 P5 5 P6 6 5 P5 6 P6 7 P7 8 P8 S0920 SWITCH S0925 1 P1 2 P2 3 P3 4 P4 6 P6 P7 7 8 P8 SWITCH SWITCH 1 P1 2 P2 3 P3 4 P4 ...

Page 84: ...U D0954 NU D0942 NU D0989 NU D0987 D0955 D0967 R0946 NU 68K NU C0944 2 2uF R0963 R0961 33K 10K 6 5 7 8 4 Q0963 U0941 2 MC33072 8 4 Q0961 MC33072 U0941 1 2 3 1 Q0941 C0964 C0941 NU 2 2uF 0 1uF D0969 D0957 D0945 D0979 NU D0972 C0963 2 2uF CH_D sheet 3 NU R0966 68K 10K R0953 R0951 10K R0943 33K 10K Q0943 R0941 D0949 D0961 NU D0982 NU D0970 C0991 470pF C0942 NU D0975 NU 0 1uF D0963 D0951 D0985 D0973 R...

Page 85: ... R0838 100 100 R0834 R0831 100 R0828 100 J0801 4 R0826 100 R0825 100 R0824 0 NU J0821 23 C0806 470pF NU 470pF C0807 6 0 1 3 4 5 VR0812 5 6V J0801 13 470pF C0812 22 R0814 C0836 NU C0808 NU 100pF 82pF R0813 22 J0821 4 J0821 2 J0821 3 J0811 9 C0823 NU NU 100pF NU 100pF C0829 C0828 100pF R0840 100 J0811 5 R0837 100 R0836 100 R0835 100 C0817 R0818 82pF 51K R0827 100 J0821 18 J0821 17 0 J0821 16 J0821 1...

Page 86: ...3822A08 PNP 25V 5A MJD210T4 Circuit Ref Motorola Part No Description Q0942 4813822A08 PNP 25V 5A MJD210T4 Q0943 4813824A10 NPN 40V 2A B 50 150 Q0944 4813824A10 NPN 40V 2A B 50 150 Q0961 4813822A08 PNP 25V 5A MJD210T4 Q0962 4813822A08 PNP 25V 5A MJD210T4 Q0963 4813824A10 NPN 40V 2A B 50 150 Q0964 4813824A10 NPN 40V 2A B 50 150 Q0991 4813824A10 NPN 40V 2A B 50 150 Q0992 4813824A10 NPN 40V 2A B 50 15...

Page 87: ... 8 R0976 0660076A01 10 5 1 8 R0977 0660076A01 10 5 1 8 R0978 0660076A01 10 5 1 8 R0991 0660076A35 270 5 1 8 R0992 0660076A35 270 5 1 8 R0993 0660076A35 270 5 1 8 R0995 0662057A89 47k 1 16W 5 R0996 0662057A89 47k 1 16W 5 R0997 0662057A89 47k 1 16W 5 U0861 5105469E65 IC VLTG REGLTR LP2951C U0871 5113802A32 68HC11 W SCI SPI A D U0873 4886061B01 CER RESONATOR 8MHZ U0941 5113818A03 IC HIGH PERFORMANCE ...

Page 88: ...4 20 Controlhead GM398 PCB 8486178B03 Schematics THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 89: ...GM328 GM338 GM398 Mobile Radios Controller Service Information Issue December 2003 ...

Page 90: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 91: ...12 Normal Microprocessor Operation 1 8 1 13 FLASH Electronically Erasable Programmable Memory FLASH EEPROM 1 10 1 14 Electrically Erasable Programmable Memory EEPROM 1 10 1 15 Static Random Access Memory SRAM 1 10 2 0 Controller Board Audio and Signalling Circuits 1 11 2 1 General Audio Signalling Filter IC with Compander ASFIC CMP 1 11 2 2 Transmit Audio Circuits 1 11 2 3 Transmit Signalling Circ...

Page 92: ...icroprocessor 3 7 Controller T5 Schematic Diagram Voice Storage 3 8 2 1 Controller T5 Parts List 3 9 3 0 Controller T7 T9 Schematic Diagrams 3 12 Controller T7 T9 Schematic Diagram Overall 3 12 Controller T7 T9 Schematic Diagram Supply Voltage 3 13 Controller T7 T9 Schematic Diagram Audio 3 14 Controller T7 only Schematic Diagram I O 3 15 Controller T9 only Schematic Diagram I O 3 16 Controller T7...

Page 93: ...nal controlhead can be connected by an extension cable In addition to the power cable and antenna cable an accessory cable can be attached to a connector on the rear of the radio The accessory cable provides the necessary connections for items such as external speaker emergency switch foot operated PTT and ignition sensing etc 1 2 General The radio controller consists of 3 main subsections Digital...

Page 94: ... 1 3 volts the regulator output decreases and if the voltage is less than 1 3 volts the regulator output increases This regulator output is electronically enabled by a 0 volt signal on pin 2 Q0661 Q0641 and R0641 are used to disable the regulator when the radio is turned off Voltage regulation providing 5V for the digital circuitry is done by U0651 Operating voltage is from the regulated 9 3V supp...

Page 95: ...through voltage divider R0671 R0672 and line BATTERY VOLTAGE Diode VR0671 limits the divided voltage to 5 6V to protect the µP Regulator U0611 is used to generate the voltage for the switched supply voltage output SWB at the accessory connector J0501 pin 13 U0611 is configured to operate as a switch with voltage and current limit R0611 R0612 set the maximum output voltage to 16 5 volts This limita...

Page 96: ...above 2 volts Transistor Q0663 switches on and pulls the collector of the npn transistor within Q0661 to ground level and thereby enables the voltage regulators via Q0641 When the emergency switch is released R0541 pulls the base of Q0662 up to 0 6 volts This causes the collector of transistor Q0662 to go low 0 2V thereby switching Q0663 off While the radio is switched on the microprocessor monito...

Page 97: ... is alerted through line GP6 IN ACC10 The voltage at the IGNITION input turns Q0181 on which pulls microprocessor pin 74 to low If the software detects a low state it asserts DC POWER ON via ASFIC pin 13 high which keeps Q0661 and Q0641 and in turn the radio switched on When the IGNITION input goes below 3 volts Q0181 switches off and R0181 pulls microprocessor pin 74 to high This alerts the softw...

Page 98: ...ller there are two ICs on the SPI BUS ASFIC CMP U0221 22 and EEPROM U0111 5 In the RF sections there are 2 ICs on the SPI BUS the FRAC N Synthesizer and the Power Control IC PCIC The SPI TRANSMIT DATA and CLK lines going to the RF section are filtered by L0481 R0481 and L0482 R0482 to minimize noise The chip select line CSX from U0101 pin 2 is shared by the ASFIC CMP FRAC N Synthesizer and PCIC Ea...

Page 99: ...P communication with the CPS or Universal Tuner 1 11 General Purpose Input Output The controller provides eight general purpose lines DIG1 through DIG8 available on the accessory connector J0501 to interface to external options Lines DIG IN 1 3 5 6 are inputs DIG OUT 2 is an output and DIG IN OUT 4 7 8 are bidirectional The software and the hardware configuration of the radio model define the func...

Page 100: ...U0101 41 to chip select U0122 20 SRAM and PG7 R W U0101 4 to select whether to read or to write The external EEPROM U0111 1 the OPTION BOARD and EXPANSION BOARD are selected by 3 lines of the µP using address decoder U0141 The chips ASFIC CMP FRAC N PCIC are selected by line CSX U0101 2 When the µP is functioning normally the address and data lines should be toggling at CMOS logic levels Specifica...

Page 101: ...ry voltage detect line R0671 and R0672 form a resistor divider on INT SWB With 30K and 10K and a voltage range of 11V to 17V that A D port would see 2 74V to 4 24V which would then be converted to 140 to 217 respectively U0101 69 is the high reference voltage for the A D ports on the µP Capacitor C0101 filters the 5V reference If this voltage is lower than 5V the A D readings will be incorrect Lik...

Page 102: ...8 and 4 The FLASH device may be reprogrammed 1 000 times without issue It is not recommended to reprogram the FLASH device at a temperature below 0 C Capacitor C0121 serves to filter out any AC noise which may ride on 5V at U0121 1 14 Electrically Erasable Programmable Memory EEPROM The external 16 KByte EEPROM U0111 contains additional radio operating parameters such as operating frequency and si...

Page 103: ... level outputs and used for NOISE BLANKER GCB0 in Low Band radios EXTERNAL ALARM GCB1 and DC POWER ON GCB2 to switch the voltage regulators and the radio on and off GCB3 controls U0251 pin 11 to output either RX FLAT AUDIO or RX FILTERED AUDIO on the accessory connector pin 11 GCB4 controls U0251 pin 10 to use either the external microphone input or the voice storage playback signal GCB5 is used t...

Page 104: ...n based on the emitter resistor in the microphone s amplifier circuit C0254 serves as a DC blocking capacitor Multi switch U0251 controlled by ASFIC CMP port GCB4 selects either the external microphone input signal or the voice storage playback signal for entering the ASFIC CMP at pin 48 The audio signal at U0221 48 TP0222 should be approximately 14mV for 1 5kHz or 3kHz of deviation with 12 5kHz o...

Page 105: ...e proper amount of FM deviation The TX audio emerges from the ASFIC CMP at U0221 40 MOD IN at which point it is routed to the RF section Dependent on the radio model input pin 3 on the accessory connector can be programmed for DATA PTT by the CPS When DATA PTT is sensed the µP will always configure the ASFIC CMP for the flat TX audio path Limiter and any filtering will be disabled The signal is ro...

Page 106: ...mply a PL tone at a higher deviation level than PL in a conventional system Although it is referred to as sub audible data the actual frequency spectrum of these waveforms may be as high as 250 Hz which is audible to the human ear However the radio receiver filters out any audio below 300Hz so these tones are never heard in the actual system Only one type of sub audible data can be generated by U0...

Page 107: ...hen out of the ASFIC CMP to the RF board MPT 1327 and MDC are generated in much the same way as Trunking ISW However in some cases these signals may also pass through a data pre emphasis block in the ASFIC CMP Also these signalling schemes are based on sending a combination of 1200 Hz and 1800 Hz tones only Microphone audio is muted during High Speed Data signalling 2 3 3 Dual Tone Multiple Freque...

Page 108: ...plified filtered attenuated and rectified It is then sent to a comparator to produce an active high signal on CH ACT A squelch tail circuit is used to produce SQ DET U0221 17 from CH ACT The state of CH ACT and SQ DET is high logic 1 when carrier is detected otherwise low logic 0 CH ACT is routed to the µP pin 84 while SQ DET is routed to the µP pin 83 FLT FLAT RX AUDIO J0501 11 16 1 EXTERNAL SPEA...

Page 109: ...Once inside it goes through the PL DPL path The signal first passes through one of 2 low pass filters either PL low pass filter or DPL LST low pass filter Either signal is then filtered and goes through a limiter and exits the ASFIC CMP at LSIO U0221 18 At this point the signal will appear as a square wave version of the sub audible signal which the radio received The microprocessor U0101 80 will ...

Page 110: ...through gate U0251 12 and AC coupled to U0211 2 The gate controlled by ASFIC CMP port GCB3 U0221 35 selects between the filtered audio signal from the ASFIC CMP pin 39 URXOUT or the unfiltered flat audio signal from the ASFIC CMP pin 10 UIO R0251 and R0253 determine the gain of op amp U0211 2 for the filtered audio while R0252 and R0253 determine the gain for the flat Audio The output of U0253 7 i...

Page 111: ...ata 2 5 2 Alert Tone Circuits When the software determines that it needs to give the operator an audible feedback for a good key press or for a bad key press or radio status trunked system busy phone call circuit failures it sends an alert tone to the speaker It does so by sending SPI BUS data to U0221 which sets up the audio path to the speaker for alert tones The alert tone itself can be generat...

Page 112: ...301 via address decoder U0141 line VS CS and U0301 pin 9 Then the µP sends data through line DATA and receives data through line MISO Pin 2 RAC of U0301 indicates the end of a message row by a low state for 12 5 ms and connects to µP pin 52 A low at pin 5 INT which is connected to µP pin 55 indicates that the Voice Storage IC requires service from the µP Audio either from the radio s receiver or f...

Page 113: ...abled with CPS Radio could not PTT externally DC at assigned Acc Con Pin DC changes Check Components between U0221 and U0271 Check Con nection to µP port PTT NO YES NO YES YES YES YES NO NO YES NO YES NO YES NO YES EXT PTT RX AUDIO Check Accessories J0501 Audio at Pin 16 Pin 1 Check Spk Flex Connec tion Control head Audio at Audio PA U0271 input Check ASFIC U0221 Check Audio PA U0271 Check Receive...

Page 114: ...2 2 Controller Troubleshooting Chart THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 115: ...s shown in Tables below Table 3 1 Controller T5 Diagrams and Parts Lists Controller T5 used on PCB 8486172B06 VHF 1 25W SCHEMATICS Controller Overall Supply Voltage Audio I O Microprocessor Voice Storage if fitted Page 3 3 Page 3 4 Page 3 5 Page 3 6 Page 3 7 Page 3 8 Parts List Controller T5 Page 3 9 Table 3 2 Controller T7 Diagrams and Parts Lists Controller T7 used on PCB T7 on 8486172B07 VHF 1 ...

Page 116: ...9 Diagrams and Parts Lists Controller T9 used on PCB T9 on 8485670Z03 UHF B1 1 25W SCHEMATICS Controller Overall Supply Voltage Audio I O Microprocessor Voice Storage if fitted Page 3 12 Page 3 13 Page 3 14 Page 3 16 Page 3 18 Page 3 19 Parts List Controller T9 Page 3 23 ...

Page 117: ...T CNTLVLTG DISCAUDIO EMERGENCY_CONTROL EXP_BD_REQ EXT_MIC EXT_SWB FLAT_RX_SND FLAT_TX_RTN FLT_A GP1_IN_ACC3 GP2_OUT_ACC4 TEMPSENSE VSTBY VS_GAINSEL VS_INT VS_RAC VOICE_STORAGE 5VD FLAT_RX_SND RX_AUD_RTN SPI 0 10 VS_AUDSEL VS_INT VS_MIC VS_RAC IO 16_8MHZ 5VD GP3_IN_ACC6 GP4_IN_OUT_ACC8 GP5_IN_ACC9 GP6_IN_ACC10 GP7_IN_OUT_ACC12 GP8_IN_OUT_ACC14 GPIO 0 13 LOCK ON_OFF_CONTROL OPT_PTT RDY RESET RSSI RX...

Page 118: ...2 0 1uF NU C0651 0 1uF C0645 24V VR0601 470pF C0621 C0622 47uF NU 6 GND2 2 ON_OFF VIN 4 VOUT 5 LM2941 U0641 ADJ 1 3 GND1 4 7K R0612 D0661 Q0662 R0671 R0672 30K 3 GND1 6 GND2 ON_OFF 2 4 VIN 5 VOUT 10K U0611 LM2941 1 ADJ 0 1uF C0671 J0601 3 Q0663 D0621 C0603 10uF R0661 VR0621 1K 6 NC3 7 NC4 NC5 8 1 RESET 5 6V MC33064 U0652 4 GND 2 INPUT 3 NC1 5 NC2 9V3 FLT_A IN_5V_RF_REG RESET 5VD NU DC_POWER_ON IGN...

Page 119: ...DDA 32 VDDCP 33 VDDD 11 VDDDAC 46 MICINT 40 MOD 26 NC 8 PLCAP 25 PLCAP2 17 SQDET 9 SQIN 28 SYN 31 GNDD 30 GNDD0 47 GNDRC 23 GNDSYN 19 HSIO LCAP 24 18 LSIO 48 MICEXT 29 F1200 15 GCB0 14 GCB1 13 GCB2 35 GCB3 GCB4 37 38 GCB5 3 GNDA 21 CLK 34 CLK168 20 CSX 6 DACG 5 DACR DACU 4 22 DATA 2 DISC 12 AGCCAP 41 AUDIO AUXRX 43 42 AUXTX 16 CHACT 6 U0221 63A53 2 2K R0208 0 1uF C0211 R0204 NU 560 R0202 560 10K C...

Page 120: ...AS_2_CNTLR_1 J0401 2 10 470pF NU C0441 J0551 15 J0551 19 1K R0535 C0511 470pF C0512 470pF CLK J0551 42 J0551 25 J0451 13 470pF C0515 J0552 12 J0552 14 J0552 13 470pF J0552 15 MOSBIAS_2 C0508 J0401 12 0 R0530 VR0509 33V 9V3_CNTLR_1 NU 8 9 470pF C0558 TP0497 470pF C0426 01uF C0501 J0451 16 15K R0512 470pF C0487 4 7K R0510 470pF 100K R0525 C0492 CLK_CNTLR_2 RSSI MOSBIAS_3_CNTLR_1 8 J0451 18 J0451 7 C...

Page 121: ...PI5 50 PG6_AS 4 PG7_R_W 47 PH0_PW1 46 PH1_PW2 45 PH2_PW3 44 PH3_PW4 43 PH4_CSIO 42 PH5_CSGP1 22 PF7_ADDR7 29 PFO_ADDR0 6 PG0_XA13 16 PG1_XA14 20 PG2_XA15 19 PG3_XA16 17 PG4_XA17 18 PG5_XA18 5 61 PE7_AN7 60 28 PF1_ADDR1 27 PF2_ADDR2 26 PF3_ADDR3 25 PF4_ADDR4 24 PF5_ADDR5 23 PF6_ADDR6 2 PD5_SS PD6_LVIN 3 PE0_AN0 67 PE1_AN1 66 PE2_AN2 65 PE3_AN3 64 PE4_AN4 63 PE5_AN5 62 PE6_AN6 PC5_DATA5 36 PC6_DATA6...

Page 122: ...NC6 AMCAP 22 24 ANA_NEG 25 ANA_POS 20 AUDOUT INT 5 11 MISO 10 MOSI U0301 U0342 CNTL 4 1 2 VDD 5 VSS 3 U0341 1 LM2904 2 3 1 8 4 TC4S66F R0346 47K 0 1uF C0344 10K 6 5 7 8 4 R0331 LM2904 U0341 2 5 3 1 2 4 R0342 1 8K D0301 R0324 18K 8 C0342 0 1uF C0343 0 1uF R0344 56K 10K 1uF C0301 R0333 C0325 9 0 1uF C0353 33uF C0352 022uF 150K R0335 0 1uF C0354 U0331 1 74AHCT1G125 A 2 OE 1 Y 4 PWR_GND U0331 2 GND 3 ...

Page 123: ...y 100nF 16V C0344 Used in 2113743E20 GM398 only 100nF 16V C0351 Used in 2113743E20 GM398 only 100nF 16V Circuit Ref Motorola Part No Description C0352 Used in 2113743E07 GM398 only 22nF 16V C0353 Used in 2311049A97 GM398 only TANT CHIP 33 UF 16 C0354 Used in 2113743E20 GM398 only 100nF 16V C0421 2113743N48 82 0 PF 5 C0422 2113741F17 470pF 50V C0423 2113741F17 470pF 50V C0426 2113743L09 470 PF 10 C...

Page 124: ...3 10k 1 16W 5 R0115 0662057A73 10k 1 16W 5 R0117 0662057A63 3k9 1 16W 5 R0121 0662057A97 100k 1 16W R0131 0662057B46 10 0 MEG OHMS 5 R0132 0662057B10 330k 1 16W 5 Circuit Ref Motorola Part No Description R0151 0662057A82 24K 1 16W 5 R0152 0662057A82 24K 1 16W 5 R0170 0662057A73 10k 1 16W 5 R0171 0662057A65 4k7 1 16W 5 R0172 0662057A73 10k 1 16W 5 R0173 0662057A65 4k7 1 16W 5 R0174 0662057A73 10k 1...

Page 125: ...3 0660076E51 FILM 1200 1 1 R0651 0662057A01 10 1 16W 5 R0652 0662057A01 10 1 16W 5 R0661 0662057A49 1k 1 16W 5 R0662 0662057B02 150k 1 16W R0671 0662057A84 30k 1 16W 5 R0672 0662057A73 10k 1 16W 5 R0681 0662057A79 18k 1 16W 5 R0682 0662057A93 68k 1 16W 5 U0101 5102226J56 MICRO PROCESSOR MC68HC1 U0111 5102463J64 EEPROM X25128 2 7 SO8 U0121 5186137B01 IC 512KX8 FLASH ROM AT49BV020 U0122 5185963A21 I...

Page 126: ..._SWB IN_5V_RF_REG LOCK MODIN MOSBIAS_2 MOSBIAS_3 5VD 5V_RF 9V3 BOOT_CNTRL BUS CH_ACT CNTLVLTG DISCAUDIO EMERGENCY_CONTROL EXP_BD_REQ EXT_MIC EXT_SWB FLAT_RX_SND FLAT_TX_RTN FLT_A GP1_IN_ACC3 SPI 0 10 TEMPSENSE VSTBY VS_GAINSEL VS_INT VS_RAC VOICE_STORAGE 5VD FLAT_RX_SND RX_AUD_RTN SPI 0 10 VS_AUDSEL VS_INT VS_MIC VS_RAC IO 16_8MHZ GP2_OUT_ACC4 GP3_IN_ACC6 GP4_IN_OUT_ACC8 GP5_IN_ACC9 GP6_IN_ACC10 G...

Page 127: ...11 R0651 10 C0652 33uF R0612 4 7K D0661 Q0662 R0671 30K R0671 30K 10K 6 2 ON_OFF VIN 4 VOUT 5 R0672 LM2941 U0611 ADJ 1 GND1 3 GND2 0 1uF 10K C0671 R0641 C0662 J0601 1 01uF R0662 150K D0660 R0652 R0621 10 24K 2 INPUT 1 RESET_ Q0641 MC33464N 45ATR U0653 3 GND C0654 10uF 470pF C0601 C0661 47uF R0642 7 5K 470pF C0641 33uF C0644 D0651 C0681 0 1uF J0601 2 0 1uF C0612 9V3 FLT_A IN_5V_RF_REG RESET 5VD DC_...

Page 128: ...5 47uF 24K R0273 100K 4 R0253 1uF C0252 10K R0255 7 C0205 2200pF 01uF C0267 C0277 1000pF 57R01 E0272 57R01 E0271 0 1uF C0245 10 R0229 0 1uF C0244 022uF C0235 C0212 10uF R0226 1MEG R0206 10K 10K R0254 1uF 15K C0231 1000pF R0276 7 C0276 2 13 12 14 4 11 10uF U0211 4 MC3403 R0203 C0202 0 1uF 100 5 3 1 2 4 C0265 C0254 C0234 0 1uF C0272 0 1uF 0 1uF C0273 3300pF 24K R0221 R0262 100K R0256 2 2K R0257 100K...

Page 129: ...1 J0551 32 CLK_CNTLR_1 J0551 7 470pF C0476 470pF C0491 J0551 13 470pF C0483 J0451 11 J0401 1 C0505 C0504 470pF 470pF 470pF C0503 J0551 24 C0593 0 1uF 470pF C0430 PASUPVLTG_CNTRL_1 470pF J0451 10 C0509 0 R0412 C0514 470pF J0501 3 VR0505 20V J0552 8 J0552 10 J0552 9 J0552 11 J0401 10 J0551 40 CSX 16_8MHZ_CNTLR_1 R0529 C0495 47K 470pF J0551 41 J0401 4 J0401 7 10 R0592 R0401 220 J0551 12 16_8MHZ J0451...

Page 130: ...R_1 J0551 7 470pF C0476 470pF C0491 J0551 13 470pF C0483 J0451 11 J0401 1 C0505 C0504 470pF 470pF 470pF C0503 J0551 24 C0593 0 1uF 470pF C0430 PASUPVLTG_CNTRL_1 470pF J0451 10 C0509 0 R0412 C0514 470pF J0501 3 VR0505 20V J0552 8 J0552 10 J0552 9 J0552 11 J0401 10 J0551 40 CSX 16_8MHZ_CNTLR_1 R0529 C0495 47K 470pF J0551 41 J0401 4 J0401 7 10 R0592 R0401 220 J0551 12 16_8MHZ J0451 9 J0551 1 VR0503 J...

Page 131: ...DATA3 33 PC4_DATA4 34 PC5_DATA5 35 PC6_DATA6 36 PA7_PA1_OC1 86 PB1_ADDR9 10 PB2_ADDR10 11 PB3_ADDR11 9 PB4_ADDR12 21 PB5_ADDR13 15 PB6_ADDR14 8 PB7_ADDR15 7 MODB_VSTBY 57 PA0_IC3 79 PA1_IC2 80 PA2_IC1 81 PA3_IC4_OC5_OC1 82 PA4_OC4_OC1 83 PA5_OC3_OC1 84 PA6_OC2_OC1 85 AVDD 59 AVSS 70 ECLK 89 EXTAL 90 IRQ 96 95 LVOUT MODA_LIR 58 MC68HC11FL0 U0101 47K R0184 10K R0174 22pF C0132 0 Q0185 7 HOLD 6 SCK 5...

Page 132: ...4_DATA4 34 PC5_DATA5 35 PC6_DATA6 36 PA7_PA1_OC1 86 PB1_ADDR9 10 PB2_ADDR10 11 PB3_ADDR11 9 PB4_ADDR12 21 PB5_ADDR13 15 PB6_ADDR14 8 PB7_ADDR15 7 MODB_VSTBY 57 PA0_IC3 79 PA1_IC2 80 PA2_IC1 81 PA3_IC4_OC5_OC1 82 PA4_OC4_OC1 83 PA5_OC3_OC1 84 PA6_OC2_OC1 85 AVDD 59 AVSS 70 ECLK 89 EXTAL 90 IRQ 96 95 LVOUT MODA_LIR 58 MC68HC11FL0 U0101 47K R0184 10K R0174 22pF C0132 0 Q0185 7 HOLD 6 SCK 5 SI 2 SO 8 ...

Page 133: ...VSSA2 17 VSSA3 18 VSSD 12 XCLK 6 10K R0341 D0301 5 3 1 2 4 8 4 U0342 TC4S66F 4 CNTL 1 47K R0346 47K R0347 1uF C0341 0 1uF C0304 LM2904 U0341 1 2 3 1 C0344 0 1uF 8 0 1uF C0301 CLK DATA 5109152M01 VS_CS MISO VS_CS 56K R0344 R0335 150K 5 1K R0345 NC4 14 NC5 15 NC6 16 NC7 19 NC8 21 NC9 23 RAC 2 SCLK 8 INT MISO 11 MOSI 10 NC1 3 NC10 27 NC11 28 NC2 4 NC3 13 U0301 22 AMCAP ANA_NEG 24 ANA_POS 25 AUDOUT 20...

Page 134: ...ed in 2113743E20 GM398 only 100nF 16V Circuit Ref Motorola Part No Description C0344 Used in 2113743E20 GM398 only 100nF 16V C0351 Used in 2113743E20 GM398 only 100nF 16V C0352 Used in 2113743E07 GM398 only 22nF 16V C0353 Used in 2311049A97 GM398 only TANT CHIP 33 UF C0354 Used in 2113743E20 GM398 only 100nF 16V C0421 2113743N48 82 0 PF 5 C0422 2113741F17 470pF 50V C0423 2113741F17 470pF 50V C0426...

Page 135: ...4880048M01 NPN DIG 47k 47k Q0271 4813824A10 NPN 40V 2A Q0641 4880048M01 NPN DIG 47k 47k Q0661 4805921T02 DUAL ROHM FMC2 RH Q0662 4813824A10 NPN 40V 2A B 50 150 Circuit Ref Motorola Part No Description Q0663 4880048M01 NPN DIG 47k 47k Q0681 4880052M01 NPN DRLNGTN MXTA R0101 0662057A73 10k 1 16W 5 R0102 0662057A65 4k7 1 16W 5 R0104 0662057A73 10k 1 16W 5 R0105 Used in 0662057A97 GM338 only 100k 1 16...

Page 136: ...0662057A49 1k 1 16W 5 R0537 0662057A33 220 1 16W 5 R0538 0662057A33 220 1 16W 5 R0539 0662057A65 4k7 1 16W 5 R0541 0662057A83 27k 1 16W 5 R0543 0662057A97 100k 1 16W CNTRL T7 only R0591 0662057A82 24K 1 16W 5 R0592 0662057A01 10 1 16W 5 R0593 0662057A97 100k 1 16W CNTRL T7 only R0611 0662057A91 56K 1 16W R0612 0662057A65 4k7 1 16W R0621 0662057A82 24K 1 16W R0641 0662057A73 10k 1 16W R0642 0660076...

Page 137: ...C0354 2113743E20 10uF C0421 2113743N48 82pF C0422 2113741F17 470pF C0423 2113741F17 470pF Circuit Ref Motorola Part No Description C0426 2113743L09 470pF C0427 2113743L09 470pF C0428 2113743N48 82pF C0429 2113743L09 470pF C0430 2113741F17 470pF C0431 2113741F17 470pF C0441 2113743L09 470pF C0442 2113743L09 470pF C0445 2113743L09 470pF C0446 2113743L09 470pF C0447 2113743L09 470pF C0448 2113743L09 ...

Page 138: ...hm R0179 0662057A89 47K Ohm R0181 0662057A65 4700 Ohm R0182 0662057A89 47K Ohm R0183 0662057A65 4700 Ohm R0184 0662057A89 47K Ohm Circuit Ref Motorola Part No Description R0185 0662057A65 4700 Ohm R0186 0662057A89 47K Ohm R0201 0662057A25 100 Ohm R0202 0662057A43 560 Ohm R0203 0662057A25 100 Ohm R0204 0662057A43 560 Ohm R0205 0662057A73 10K Ohm R0206 0662057A73 10K Ohm R0207 0662057A57 2200 Ohm R0...

Page 139: ...0 Ohm R0662 0662057B02 150K Ohm R0671 0662057A84 30K Ohm R0672 0662057A73 10K Ohm R0681 0662057A79 18K Ohm R0682 0662057A93 68K Ohm U0101 5102226J56 MICROPROCESSOR U0111 5102463J64 EEPROM U0121 5186137B01 IC FLASH ROM Circuit Ref Motorola Part No Description U0122 5185748L01 SRAM U0141 5113805A30 IC 10F8 DCDR REMUX 74HC138 U0211 5183222M49 IC QUAD OPAMP U0221 5185130C53 IC ASFIC U0251 5184704M60 I...

Page 140: ...3 26 Controller T7 T9 Schematic Diagrams THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 141: ...GM328 GM338 GM398 Mobile Radios VHF 136 174MHz Service Information Issue December 2003 ...

Page 142: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 143: ...Transmitter Power Amplifier PA 25 W 2 3 3 1 First Power Controlled Stage 2 4 3 2 Power Controlled Driver Stage 2 4 3 3 Final Stage 2 4 3 4 Directional Coupler 2 5 3 5 Antenna Switch 2 5 3 6 Harmonic Filter 2 5 3 7 Power Control 2 5 4 0 VHF 136 174 MHz Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 6 4 3 Voltage Controlled Oscillator VCO 2 7 4 4 Synthesizer Oper...

Page 144: ...W 8486172B06 Bottom Side 4 4 VHF 136 174 MHz Power Amplifier 1 25W 4 5 VHF 136 174 MHz FRACN 4 6 VHF 136 174 MHz Voltage Controlled Oscillator 4 7 VHF 136 174 MHz Receiver Front End 4 8 VHF 136 174 MHz IF 4 9 VHF PCB 8486172B06 Parts List 1 25W 4 10 VHF 136 174 MHz 1 25W 8486172B07 Top Side 4 13 VHF 136 174 MHz 1 25W 8486172B07 Bottom Side 4 14 VHF 136 174 MHz IF 4 15 VHF 136 174 MHz FRACN 4 16 VH...

Page 145: ...l Head Direct Mount X GCN6115_ GM398 Control Head Direct Mount X X IMUD6010_ Tanapa WM 136 174 MHz 1 25W X IMUD6023_ Tanapa WM 136 174 MHz 1 25W X X X RAD4198_ BNC 136 144 MHz 1 4 Wave Roof Mount X X X RAD4199_ BNC 146 150 8 MHz 1 4 Wave Roof Mount X X X RAD4200_ BNC 150 8 162 MHz 1 4 Wave Roof Mount X X X RAD4201_ BNC 162 174 MHz 1 4 Wave Roof Mount X X X RAD4202_ BNC 146 172 MHz 3dB Gain Roof Mo...

Page 146: ... H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 186mm 1 25W 59mm x 179mm x 198mm 25 45W add 9mm for Volume Knob Dimensions H x W x D mm Depth excluding knobs GM398 72mm x 185mm x 188mm add 7mm for Volume Knob Weight GM328 GM338 1400 g Weight GM398 1500 g Sealing Withstands rain testing per MIL STD 810 C D E and IP54 Shock and Vibration Protection provided via impact resistant housing exce...

Page 147: ...z Audio Response 300 3000Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver VHF Frequencies Full Bandsplit VHF 136 174 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Base Mode 70dB 1 25W model only Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 75 dB 20 kHz 80 dB 25 kHz Spurious Rejection ETS 75 dB 12 5 ...

Page 148: ...1 4 Technical Specifications THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 149: ...t mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz High side first injection is used Figure 2 1 VHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Antenna Control Voltage from PCIC First LO fr...

Page 150: ...necessary to maintain its collector current constant at approximately 15 20 mA Operating voltage is from the regulated 9 3V supply 9V3 During transmit 9 1 volts K9V1 turns off both transistors Q3002 and Q3001 This protects the RF pre amplifier from excessive dissipation during transmit mode A switchable 3dB pad R3022 R3024 R3016 and R3018 controlled via Line FECNTL_2 and Q3021 stabilizes the outpu...

Page 151: ...O which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuitry A Received Signal Strength Indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the microprocessor U0101 pin 63 and in addition is available at accessory connector J0501 15 3 0 VHF 136 174 MHz Transmitter Power Amplifier PA 25 W The radio s 25 W PA is a three ...

Page 152: ...r Controlled Driver Stage The next stage is an LDMOS device Q3421 providing a gain of 12dB This device requires a positive gate bias and a quiescent current flow for proper operation The bias is set during transmit mode by the drain current control op amp U3402 2 and fed to the gate of Q3421 via the resistive network R3429 R3418 R3415 and R3416 Op amp U3402 2 monitors the drain current of U3421 vi...

Page 153: ... level RF signals above the receiver passband from reaching the receiver circuits improving spurious response rejection 3 7 Power Control The transmitter uses the Power Control IC PCIC U3501 to control the power output of the radio A portion of the forward RF power from the transmitter is sampled by the directional coupler and rectified to provide a DC voltage to the RFIN port of the PCIC pin 1 wh...

Page 154: ...Y3263 is used Y3261 D3261 C3261 C3262 and R3262 are not used and C3263 is increased to 0 1 uF 4 2 Fractional N Synthesizer The LVFRAC N synthesizer IC U3201 consists of a pre scaler a programmable loop divider control divider logic a phase detector a charge pump an A D converter for low frequency digital modulation a balance attenuator to balance the high frequency analog modulation and low freque...

Page 155: ...icates a stable loop IC U3201 provides the 16 8 MHz reference frequency at pin 19 The serial interface SRL is connected to the microprocessor via the data line DATA U3201 7 clock line CLK U3201 8 and chip enable line CSX U3201 9 4 3 Voltage Controlled Oscillator VCO The Voltage Controlled Oscillator VCO consists of the VCO Buffer IC VCOBIC U3301 the TX and RX tank circuits the external RX buffer s...

Page 156: ... the synthesizer loop The pre scaler in the synthesizer U3201 is a dual modulus type with selectable divider ratios The divider ratio of the pre scaler is controlled by the loop divider which in turn receives its inputs via the SRL The output of the pre scaler is applied to the loop divider The output of the loop divider is connected to the phase detector which compares the loop divider s output s...

Page 157: ...enuator high frequency path The A D converter changes the low frequency analog modulating signal into a digital code that is applied to the loop divider thereby causing the carrier to deviate The balance attenuator is used to adjust the VCO s deviation sensitivity to high frequency modulating signals The output of the balance attenuator is present at the MODOUT port U3201 41 and connected to the V...

Page 158: ...2 10 VHF 136 174 MHz Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 159: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 160: ... at R3019 Inject RF into J3401 Is tuning voltage OK No Yes Check RF amp Q3001 Stage Check filter between C3012 T3001 Yes Check T3001 T3002 D3031 R3030 R3034 L3032 C3034 and C3035 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3035 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present ...

Page 161: ...3403 to Ground NO YES Voltage at TP3402 rises Check PA Stages NO YES PCIC U3501 Pin 14 9 3V DC Check 9 3 V Regulator U0641 NO YES PCIC U3501 Pin 16 4V DC Replace PCIC U3501 NO YES TP3404 9 1V DC If U3201 Pin 2 is high replace PCIC U3501 otherwise check controller and FGU YES NO TP3403 0 5V DC Replace PCIC U3501 Check Forward Power Sense Circuit D3451 Check Forward Power Sense Circuit D3451 NO YES ...

Page 162: ...U3402 1 Pin 3 8 8V Check S3440 R3442 and R3443 YES Pin 3 Volt age 0 51 Voltage at Pin 1 NO Replace U3401 2V DC Voltage at U3402 2 Pin 7 6V Check Components between U3402 2 Pin 7 and Q3421 Check Resistive Network at Pins 5 6 before replacing Q3421 YES DC Voltage at U3402 2 Pin 5 8 8V Check Components between U3402 2 Pin 7 and Q3421 Check Resis tive Network at Pins 5 6 before replacing Q3421 NO Chec...

Page 163: ...1 Pin 6 3V Supply Replace Q3441 Check FGU U3301 NO Check Components between TP3401 C3417 NO YES ASFIC U0221 Pin 6 1 4V DC Check Bias Tuning before replacing ASFIC U0221 Check Components between ASFIC and Q3441 before replacing Q3441 YES RF Voltage Q3421 Gate 1V NO Check Components between C3417 Q3421 YES RF Voltage Q3441 Gate 4V NO Check Components between Q3421 Q3441 Check Components between Q344...

Page 164: ...move Shorts Is there a short between Pin 47 and Pins 14 15 of U3201 Replace or resolder necessary components Is RF level at U3201 Pin 32 12 x 25 dBm Are R3221 R3222 R3223 C3221 C3222 C3224 OK Replace U3201 If R3227 C3226 C3227 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U3201 toggle when channel is changed Check programming lines between U0101 ...

Page 165: ...eplace R3364 NO NO YES YES If R3402 and C3315 are OK replace U3301 TX VCO RX VCO Correct Problem Visual check of board OK Make sure U3211 is working correctly and runner between U3211 Pin 1 and U3301 Pin 14 18 is OK Check runner between U3201 Pin 2 and U3301 Pin 19 Is RF available If all parts from U3301 Pin 8 to Base of Q3301 are OK replace U3301 If all parts associated with the pins are OK repla...

Page 166: ...3 8 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 167: ... VHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 VHF 1 25W Diagrams and Parts Lists PCB 8486172B06 Main Board Top Side 8486172B06 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 1 25W FRACN Voltage Controlled Oscillator Receiver Front End IF Page 4 5 Page 4 6 Page 4 7 Page 4 8 Page 4 9 Parts List 8486172B06 Page 4 10 Table 4 2 VHF 1 25W...

Page 168: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 169: ...9 D0201 D0651 D3001 D3003 D3004 D3031 D3221 D3341 D3361 D3362 D3401 D3471 D3472 2 3 4 5 6 FL3101 2 3 4 5 6 FL3102 4 3 2 FL3112 FL3114 18 1 J0451 20 11 10 J0501 J0601 2 3 J3401 L0481 L0482 L3002 L3031 L3032 L3034 L3100 L3101 L3201 L3232 L3333 L3341 L3343 L3344 L3346 L3361 L3362 L3363 L3364 L3401 L3403 L3411 L3412 L3413 L3414 L3422 L3443 L3471 L3472 L3493 M3421 Q0110 Q0177 Q0181 Q0185 Q0681 Q3001 Q3...

Page 170: ...72 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266 R0273 R0274 R0275 R0276 R0323 R0324 R0331 R0332 R0333 R0335 R0341 R0342 R0343 R0344 R0345 R0346 R0347 R0401 R0407 R0408 R0409 R0410 R0412 R0441 R0467 R0468 R0481 R0482 R0511 R0512 R0525 R0529 R0530 R0531 R0537 R0541 R0542 R0591 R0592 R0621 R0641 R0642 R0643 R0661 R0662 R0671 R0672 R...

Page 171: ... 15pF 022uF C3411 D3471 R3403 300 470pF C3405 L3471 1 2uH 100K R3406 51nH R3508 100K L3491 11 03nH 5 6K R3412 L3413 R3505 300K 270pF 120pF C3448 C3472 2 7 R3424 47pF C3417 C3439 470pF 0 R3446 150pF C3496 C3442 R3455 36pF C3510 100K CNTLVLTG_VHF_PA_1 470pF PA_PWR_SET_VHF_PA_1 470pF C3453 10uF C3436 R3429 220 R3433 2 7 C3433 56pF R3501 L3492 51nH 6 8K 22K R3418 2 3 1 8 4 C3440 1000pF RXIN U3402 1 LM...

Page 172: ...4 20 AVDD 40 BIAS1 VCOBIAS_1 63A27 U3201 47 R3201 VSF C3222 0 R3211 0 1uF L3231 0 1uF C3211 TP3202 1 2 2uH C3243 220pF 16_8MHz VDDA VDDA_VHF_FN_1 VCOBIAS_2_VHF_FN_1 0 1uF C3209 C3246 220pF NU C3206 10uF 5V_VHF_FN_2 33K R3206 Q3221 R3251 180K 01uF C3228 0 1uF C3235 2 2uF C3210 VCTRL_VHF_FN_1 R3204 LOCK_VHF_FN_1 47 1uF C3223 NU 220pF R3262 NU C3245 BWSELECT 6 2K C3215 R3224 47K C3213 2 2uF 1 GND 5 I...

Page 173: ...11 10K R3317 22 R3318 NU L3344 1uH C3362 5 6pF 100nH L3332 22 R3306 0 R3316 NU 18nH L3301 C3344 1 8pF Q3301 L3318 100nH C3311 022uF 6 8pF C3314 C3315 01uF C3303 15pF 20K R3351 Q3304 BFQ67W NU 47K R3319 3 3pF C3316 56nH L3361 0 R3308 TRB_VHF_VCO_1 1uH L3364 C3351 01uF 12K R3352 PRESC VCOMOD VCOBIAS_1_VHF_VCO_1 R3323 1K VCTRL C3347 01uF C3337 0 1uF NU R3307 220 D3341 VCOBIAS_1 RXINJ_VHF_VCO_1 100K R...

Page 174: ...032 C3035 C3024 NU 820 NU 3300pF NU R3023 0 C3005 NU 4 7pF C3018 100pF C3030 1000pF NU 330pF C3023 C3027 01uF R3028 390 560nH L3031 56pF C3004 SP_1_2 R3012 1K NU 33nH L3034 Q3021 NU 0 R3035 1 5K R3004 0 R3033 3300pF C3007 330pF C3029 K9V1 390 R3024 NU 01uF C3028 10K 1K R3036 R3006 R3026 NU SP_2_2 10K R3014 SP_2_1 51 C3015 C3002 9 1pF 56pF 82pF C3034 NU 18pF C3031 IO3 IO4 5 1pF C3033 D3031 IO1 IO2 ...

Page 175: ...141 82pF 10 R3112 1 8K R3142 R3154 10K C3122 039uF Q3101 6 VCC 330 R3113 20 MIXOUT 4 OSCIN 3 OSCOUT 10 QUADIN 1 RFIN 2 RFIN_DEC 5 RSSIOUT 9 RSSI_FEED 15 18 IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP _DEC2 14 LIMIN 11 LIMOUT 13 LIM_DEC1 12 LIM_DEC2 SA616 U3101 8 AUDIOOUT 7 AUDIO_FEED GND 51 44 395MHz 12R17 Y3101 2 GND 4 GND1 3 OUT 1 IN R3130 C3136 30pF C3135 33pF 12K R3101 R3147 12K C3133 10uF C311...

Page 176: ...F 16V C3314 2113740F23 6 8pF 5 50V C3315 2113740F31 15pF 5 50V Circuit Ref Motorola Part No Description C3316 2113740F15 3 3pF 5 50V C3317 2113740F39 33pF 5 50V C3318 2113740F21 5 6pF 5 50V C3319 2113741F25 1nF 50V C3324 2113741F49 10nF 50V C3332 2113743E20 100nF 16V C3333 2113743E20 100nF 16V C3334 2113743E07 22nF 16V C3335 2113741F49 10nF 50V C3336 2113741F49 10nF 50V C3337 2113743E20 100nF 16V ...

Page 177: ...0 0662057A45 680 OHMS 5 R3011 0662057A65 4k7 1 16W 5 R3012 0662057A49 1k 1 16W 5 R3013 0662057A61 3k3 1 16W 5 R3014 0662057A18 51 1 16W 5 R3015 0662057A01 10 1 16W 5 R3016 0662057A01 10 1 16W 5 R3018 0662057A33 220 1 16W 5 Circuit Ref Motorola Part No Description R3019 0662057A89 47k 1 16W 5 R3021 0662057A43 560 1 16W 5 R3024 0662057A39 390 1 16W 5 R3025 0662057A53 1k5 1 16W 5 R3026 0662057A73 10k...

Page 178: ...W 5 R3473 0680194M18 51 1W 5 R3474 0680194M18 51 1W 5 R3475 0662057A73 10k 1 16W 5 R3491 0662057A73 10k 1 16W 5 R3501 0662057A69 6k8 1 16W 5 R3502 0662057A87 39k 1 16W 5 R3504 0662057A73 10k 1 16W 5 R3505 0662057B09 300k 1 16W 5 R3507 0662057A80 20k 1 16W 5 R3508 0662057A97 100k 1 16W R3509 0662057A49 1k 1 16W 5 T3001 2508396X02 TRANSFORMER T3002 2508397X02 TRANSFORMER U3101 5186144B01 FM IF IC SA...

Page 179: ...472 2 3 4 5 6 FL3101 2 3 4 5 6 FL3102 4 3 2 FL3112 FL3114 18 1 20 11 10 J0601 2 3 J3401 L0481 L0482 L3002 L3031 L3032 L3034 L3100 L3101 L3124 L3201 L3232 L3333 L3341 L3343 L3344 L3346 L3361 L3362 L3363 L3364 L3401 L3403 L3411 L3412 L3413 L3414 L3422 L3443 L3471 L3472 L3493 M3421 Q0110 Q0177 Q0181 Q0185 Q0681 Q3001 Q3021 Q3221 Q3304 Q3411 Q3422 2 3 4 5 6 7 8 Q3441 Q3442 Q3471 Q3472 R0101 R0102 R010...

Page 180: ... Q3303 1 2 3 Q3421 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266 R0267 R0273 R 0274 R0275 R 0276 R0323 R0324 R0331 R0332 R0333 R0335 R0341 R0342 R0343 R0344 R0345 R0346 R0347 R0401 R0407 R0408 R0409 R0410 R0412 R0441 R0467 R0468 R0481 R0482 R0511 R0512 R0525 R0529 R0530 R...

Page 181: ...F 10 R3112 1 8K R3142 R3154 10K C3122 039uF Q3101 6 VCC 330 R3113 20 MIXOUT 4 OSCIN 3 OSCOUT 10 QUADIN 1 RFIN 2 RFIN_DEC 5 RSSIOUT 9 RSSI_FEED 15 18 IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP _DEC2 14 LIMIN 11 LIMOUT 13 LIM_DEC1 12 LIM_DEC2 SA616 U3101 8 AUDIOOUT 7 AUDIO_FEED GND 51 44 395MHz 12R17 Y3101 2 GND 4 GND1 3 OUT 1 IN R3130 C3136 30pF C3135 33pF 12K R3101 R3147 12K C3133 10uF C3115 100 R...

Page 182: ...DAPT 16 INDMULT 43 IOUT LOCK 4 10 MODIN 41 MODOUT 17 NC1 29 NC2 39 BIAS2 42 CCOMP 9 CEX 8 CLK 7 DATA DGND 6 36 DVDD 19 FREFOUT 46 ADAPTSW 22 AGND 48 AUX1 1 AUX2 2 AUX3 3 AUX4 20 AVDD 40 BIAS1 VCOBIAS_1 63A27 U3201 47 R3201 VSF C3222 0 R3211 0 1uF L3231 0 1uF C3211 TP3202 2 2uH C3243 220pF 16_8MHz VDDA VDDA_VHF_FN_1 VCOBIAS_2_VHF_FN_1 0 1uF C3209 C3246 220pF NU C3206 10uF 5V_VHF_FN_2 150K R3206 Q32...

Page 183: ...E20 100nF 16V C3302 2113740F23 6 8pF 5 50V C3303 2113741F49 10nF 50V Circuit Ref Motorola Part No Description C3306 2113740F20 5 1pF 5 50V C3311 2113743E07 22nF 16V C3314 2113740F23 6 8pF 5 50V C3315 2113740F31 15pF 5 50V C3316 2113740F15 3 3pF 5 50V C3317 2113740F39 33pF 5 50V C3318 2113740F21 5 6pF 5 50V C3319 2113741F25 1nF 50V C3324 2113741F49 10nF 50V C3332 2113743E20 100nF 16V C3333 2113743E...

Page 184: ...1 16W 5 R3001 0662057A97 100k 1 16W R3002 0662057A43 560 1 16W 5 R3003 0662057A49 1k 1 16W 5 R3004 0662057A53 1k5 1 16W 5 R3006 0662057A73 10k 1 16W 5 R3009 0662057A97 100k 1 16W R3010 0662057A45 680 OHMS 5 Circuit Ref Motorola Part No Description R3011 0662057A65 4k7 1 16W 5 R3012 0662057A49 1k 1 16W 5 R3013 0662057A61 3k3 1 16W 5 R3014 0662057A18 51 1 16W 5 R3015 0662057A01 10 1 16W 5 R3016 0662...

Page 185: ...452 0662057A75 12k 1 16W 5 R3454 0662057A84 30k 1 16W 5 R3455 0662057A97 100k 1 16W R3457 0683962T51 120 1W 5 R3471 0662057A41 470 1 16W 5 R3473 0680194M18 51 1W 5 R3474 0680194M18 51 1W 5 R3475 0662057A73 10k 1 16W 5 R3491 0662057A73 10k 1 16W 5 R3501 0662057A69 6k8 1 16W 5 R3502 0662057A87 39k 1 16W 5 R3504 0662057A73 10k 1 16W 5 R3505 0662057B09 300k 1 16W 5 R3507 0662057A80 20k 1 16W 5 R3508 0...

Page 186: ...4 20 VHF 1 25W PCBs Schematics Parts Lists THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 187: ...GM328 GM338 GM398 Mobile Radios UHF 403 470MHz Service Information Issue December 2003 ...

Page 188: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 189: ...Transmitter Power Amplifier PA 25 W 2 3 3 1 First Power Controlled Stage 2 4 3 2 Power Controlled Driver Stage 2 4 3 3 Final Stage 2 4 3 4 Directional Coupler 2 5 3 5 Antenna Switch 2 5 3 6 Harmonic Filter 2 5 3 7 Power Control 2 5 4 0 UHF 403 470 MHz Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 7 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Oper...

Page 190: ...4 5 UHF 403 470 MHz FRACN 4 6 UHF 403 470 MHz Voltage Controlled Oscillator 4 7 UHF 403 470 MHz Receiver Front End 4 8 UHF 403 470 MHz IF 4 9 UHF PCB 8485670Z02 Parts List 1 25W 4 10 UHF 403 470 MHz 1 25W 8485670Z03 Top Side 4 13 UHF 403 470 MHz 1 25W 8485670Z03 Bottom Side 4 14 UHF 403 470 MHz Power Amplifier 1 25W 4 15 UHF 403 470 MHz FRACN 4 16 UHF 403 470 MHz Voltage Controlled Oscillator 4 17...

Page 191: ...trol Head Direct Mount X GCN6115_ GM398 Control Head Direct Mount X X IMUE6021_ Tanapa WM 403 470 MHz 1 25W X IMUE6039_ Tanapa WM 403 470 MHz 1 25W X X X RAE4151_ BNC 403 430 MHz 1 4 Wave Roof Mount X X X RAE4158_ BNC 406 420 MHz 3 5dB Gain Roof Mount X X X RAE4152_ BNC 450 470 MHz 1 4 Wave Roof Mount X X X RAE4153_ BNC 450 470 MHz 3 5dB Gain Roof Mount X X X RAE4154_ BNC 450 470 MHz 5dB Gain Roof...

Page 192: ... H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 186mm 1 25W 59mm x 179mm x 198mm 25 45W add 9mm for Volume Knob Dimensions H x W x D mm Depth excluding knobs GM398 72mm x 185mm x 188mm add 8mm for Volume Knob Weight GM328 GM338 1400 g Weight GM398 1500 g Sealing Withstands rain testing per MIL STD 810 C D E and IP54 Shock and Vibration Protection provided via impact resistant housing exce...

Page 193: ... dB 12 5 kHz 70 dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 403 470 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Base Mode 70dB 1 25W model only Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious ...

Page 194: ...cifications Availability subject to the laws and regulations of individual countries Audio Response 300 3000Hz 20 25kHz 300 2550Hz 12 5kHz 1 to 3 dB Conducted Spurious Emission ETS 57 dBm 1 GHz 47 dBm 1 GHz Receiver UHF ...

Page 195: ...mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack Antenna Control...

Page 196: ...a L4003 and R4002 A switchable 3dB pad R4066 R4007 R4063 R4064 and R4070 controlled via line FECTRL_2 and Q4004 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal The varactor diodes D4004 and D4005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A fol...

Page 197: ...SCAUDIO which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuitry A Received Signal Strength Indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the microprocessor U0101 pin 63 and in addition is available at accessory connector J0501 15 3 0 UHF 403 470 MHz Transmitter Power Amplifier PA 25 W The radio s 25W PA is a t...

Page 198: ... proper thermal contact to the chassis 3 2 Power Controlled Driver Stage The next stage is an LDMOS device Q4421 providing a gain of 12dB This device requires a positive gate bias and a quiescent current flow for proper operation The bias is set during transmit mode by the drain current control op amp U4402 2 and fed to the gate of Q4421 via the resistive network R4429 R4418 R4415 and R4416 Op amp...

Page 199: ...attenuate harmonic energy of the transmitter to specifications level R4491 is used to drain electrostatic charge that might otherwise build up on the antenna The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits improving spurious response rejection 3 7 Power Control The transmitter uses the Power Control IC PCIC U4501 to control th...

Page 200: ...olled Oscillator VCO 4 1 Reference Oscillator The reference oscillator Y4262 contains a temperature compensated crystal oscillator with a frequency of 16 8 MHz An Analogue to Digital A D converter internal to U4201 LVFRAC N and controlled by the microprocessor via serial interface SRL sets the voltage at the warp output of U4201 pin 25 to set the frequency of the oscillator The output of the oscil...

Page 201: ...d by the positive voltage multiplier circuitry D4201 C4202 C4203 This voltage multiplier is basically a diode capacitor network driven by two 1 05MHz 180 degrees out of phase signals U4201 14 and 15 Output LOCK U4201 4 provides information about the lock status of the synthesizer loop A high level at this output indicates a stable loop IC U4201 provides the 16 8 MHz reference frequency at pin 19 T...

Page 202: ... 3 0V and 10 0V at varactor diode CR4311 will tune the full TX frequency range TXINJ from 403 MHz to 470 MHz and at varactor diodes CR4301 CR4302 and CR4303 will tune the full RX frequency range RXINJ from 358 MHz to 425 MHz The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit an external transistor Q4301 is used in conjunction with the internal transistor f...

Page 203: ...3 C4221 C4225 L4221 transforms this current into a voltage that is applied to the varactor diodes CR4311 for transmit CR4301 CR4302 CR4303 for receive and alters the output frequency of the VCO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U4201 40 or BIAS 2 U4201 39 The currents are set by the value of R4251 or R4252 respec...

Page 204: ...2 10 UHF 403 470 MHz Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 205: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 206: ...at R4060 Inject RF into J4401 Is tuning voltage OK No Yes Check RF amp Q4003 Stage Check filter between C4015 T4051 Yes Check T4051 T4052 D4051 R4052 L4008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltage ci...

Page 207: ...4403 to Ground NO YES Voltage at TP4402 rises Check PA Stages NO YES PCIC U4501 Pin 14 9 3V DC Check 9 3 V Regulator U0641 NO YES PCIC U4501 Pin 16 4V DC Replace PCIC U4501 NO YES TP4404 9 1V DC If U4201 Pin 2 is high replace PCIC U4501 otherwise check controller and FGU YES NO TP4403 0 5V DC Replace PCIC U4501 Check Forward Power Sense Circuit D4451 Check Forward Power Sense Circuit D4451 NO YES ...

Page 208: ...U4402 1 Pin 3 8 8V Check S4440 R4442 and R4443 YES Pin 3 Voltage 0 51 Voltage at Pin 1 NO Replace U4401 2V DC Voltage at U4402 2 Pin 7 6V Check Components between U4402 2 Pin 7 and Q4421 Check Resistive Network at Pins 5 6 before replacing Q4421 YES DC Voltage at U4402 2 Pin 5 8 8V Check Components between U4402 2 Pin 7 and Q4421 Check Resis tive Network at Pins 5 6 before replacing Q4421 NO Check...

Page 209: ...1 Pin 6 3V Supply Replace Q4441 Check FGU U4301 NO Check Components between TP4401 C4417 NO YES ASFIC U0221 Pin 6 1 4V DC Check Bias Tuning before replacing ASFIC U0221 Check Components between ASFIC and Q4441 before replacing Q4441 YES RF Voltage Q4421 Gate 1V NO Check Components between C4417 Q4421 YES RF Voltage Q4441 Gate 4V NO Check Components between Q4421 Q4441 Check Components between Q444...

Page 210: ...4201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U4201 Replace or resolder necessary components Is RF level at U4201 Pin 32 12 x 25 dBm Are R4221 R4222 R4223 C4221 C4222 C4223 OK Replace U4201 If L4225 C4229 C4227 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U4201 toggle when channel is changed Check programming lines between...

Page 211: ...21 and R4321 are OK then replace CR4321 Replace C4322 Replace C4325 NO NO YES YES If parts between R4402 U4301 Pin10 are OK replace U4301 TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U4201 Pin 2 and U4301 Pin 19 Is RF available If all parts from U4301 Pin 8 to Base of Q4332 are OK replace U4301 If all parts associated with the pins are OK replace Q4332 If all parts f...

Page 212: ...3 8 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 213: ...HF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF 1 25W Diagrams and Parts Lists PCB 8485670z02 Main Board Top Side 8485670z02 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 1 25W FRACN Voltage Controlled Oscillator Receiver Front End IF Page 4 5 Page 4 6 Page 4 7 Page 4 8 Page 4 9 Parts List 8485670z02 Page 4 10 Table 4 2 UHF 1 25W D...

Page 214: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 215: ... C4508 C4509 D0201 D0651 D4001 D4002 D4003 D4004 D4005 D4006 D4051 D4221 D4401 D4471 D4472 2 3 4 5 6 FL3101 2 3 4 5 6 FL3102 4 3 2 FL3112 FL3114 18 1 J0451 20 11 10 J0501 J0601 2 3 J4401 L0481 L0482 L3100 L3101 L3124 L4001 L4002 L4003 L4004 L4005 L4006 L4008 L4051 L4053 L4054 L4201 L4221 L4225 L4303 L4304 L4305 1 3 L4312 L4313 L4331 L4371 L4401 L4403 L4411 L4422 L4471 L4472 L4491 L4492 L4493 M3421...

Page 216: ...4331 Q4332 1 2 3 Q4421 Q4472 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266 R0267 R0273 R0274 R0275 R0276 R0323 R0324 R0331 R0332 R0333 R0335 R0341 R0342 R0343 R0344 R0345 R0346 R0347 R0401 R0407 R0408 R0409 R0410 R0412 R0441 R0467 R0468 R0481 R0482 R0511 R0512 R0525 R0529...

Page 217: ...Q4411 C4405 100pF TP4406 Q4422 TP4403 15pF C4504 FECTRL_1 FECTRL_1_UHF_PA_1 TXINJ R4504 10K CLK_UHF_PA_1 INT_SWB TP4401 R4455 100K 2pF C4475 D4472 CSX_UHF_PA_1 D4401 Kit_0102727B46 11pF C4498 CNTLVLTG C4457 56pF 022uF C4402 C4497 5 6pF R4505 NU 300K R4411 C4415 022uF C4501 C4452 2200pF 13pF 51 R4514 17nH L4491 R4471 470 51 R4474 DATA 36pF C4473 12pF C4474 PASUPVLTG_UHF_PA_1 51 R4415 NU C4443 C4449...

Page 218: ...D4261 01uF C4231 PRESC_UHF_FN_1 018uF C4212 390nH L4201 C4242 100pF 4 7uF C4253 BWSELECT_UHF_FN_1 MODIN VCOMOD 01uF C4221 0 C4222 0 1uF R4211 2 2uF C4215 C4207 12uH L4221 0 1uF C4251 100pF C4241 C4243 1000pF VSF_UHF_FN_1 C4252 01uF C4235 LOCK 2 2uF C4213 C4261 MODIN_UHF_FN_1 XTAL1 23 24 XTAL2 5V_UHF_FN_1 VBPASS 21 VCP 47 15 VMULT1 VMULT2 14 VMULT3 12 VMULT4 11 13 VRO WARP 25 PVREF 35 REFSEL 18 SFB...

Page 219: ... 3 SUPER_FLTR U4301 4 COLL_RFIN 20 FLIP_IN 11 GND_BUFFERS 9 GND_FLAG R4346 10K 50U54 L4312 RESONATOR 1 P1 2 P2 3 P3 C4314 1 5pF C4307 100pF C4352 0 1uF C4321 Q4331 1pF 4 1 3 CR4301 Q4333 2 6 C4339 C4375 L4332 L4361 390nH VCTRL 0 R4341 C4324 2 4pF 2 2K R4342 6 8pF TRB_UHF_VCO C4331 C4304 3 9pF C4333 C4374 C4335 100pF 270 R4314 7 5K R4311 TXINJ_UHF_VCO R4334 R4301 L4301 390nH R4323 5 6K 100K 1K R434...

Page 220: ...4025 R4017 3 3K R4016 R4018 C4028 01uF C4020 33pF 3 3K C4004 33pF C4005 1 8pF 33pF C4001 C4002 C4006 33pF C4007 FECTRL_1_UHF_FE 30pF 100K R4001 C4009 10pF R4003 3 9K R4004 2 7K D4007 10K IF_UHF_FE R4005 C4014 100pF 470nH K9V1_UHF_FE L4003 R4007 100 RXIN_UHF_FE 330pF 3300pF C4012 C4013 100pF C4015 GND_UHF_FE C4011 3300pF 330 RXINJ_UHF_FE R4002 Q4004 33pF C4021 T4052 C4017 D4051 1 8pF 12pF Q4003 Q40...

Page 221: ...VDD 7 VSS 2 4K R3144 U3111 2 5 CNTL 4 3 NU C3131 C3122 039uF R3107 5 RSSIOUT 9 RSSI_FEED 6 VCC 6 8K 13 LIM_DEC1 12 LIM_DEC2 20 MIXOUT 4 OSCIN 3 OSCOUT 10 QUADIN 1 RFIN 2 RFIN_DEC AUDIO_FEED GND 15 18 IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP_DEC2 14 LIMIN 11 LIMOUT SA616 U3101 8 AUDIOOUT 7 CNTL 13 1 2 VDD 14 VSS 7 5V U3115 1 R3105 L3100 100 0 1uF 9V3 NU 3 2 1 C3134 BWSELECT 45B02 Y3102 455KHz C31...

Page 222: ...F 16V C3314 2113740F23 6 8pF 5 50V C3315 2113740F31 15pF 5 50V Circuit Ref Motorola Part No Description C3316 2113740F15 3 3pF 5 50V C3317 2113740F39 33pF 5 50V C3318 2113740F21 5 6pF 5 50V C3319 2113741F25 1nF 50V C3324 2113741F49 10nF 50V C3332 2113743E20 100nF 16V C3333 2113743E20 100nF 16V C3334 2113743E07 22nF 16V C3335 2113741F49 10nF 50V C3336 2113741F49 10nF 50V C3337 2113743E20 100nF 16V ...

Page 223: ...1 16W 5 R3014 0662057A18 51 1 16W 5 R3015 0662057A01 10 1 16W 5 R3016 0662057A01 10 1 16W 5 R3018 0662057A33 220 1 16W 5 R3019 0662057A89 47k 1 16W 5 R3021 0662057A43 560 1 16W 5 R3024 0662057A39 390 1 16W 5 R3025 0662057A53 1k5 1 16W 5 R3026 0662057A73 10k 1 16W 5 R3027 0662057A73 10k 1 16W 5 R3028 0662057A39 390 1 16W 5 Circuit Ref Motorola Part No Description R3031 0662057A18 51 1 16W 5 R3033 0...

Page 224: ...1 0662057A73 10k 1 16W 5 R3501 0662057A69 6k8 1 16W 5 R3502 0662057A87 39k 1 16W 5 R3504 0662057A73 10k 1 16W 5 R3505 0662057B09 300k 1 16W 5 R3507 0662057A80 20k 1 16W 5 R3508 0662057A97 100k 1 16W R3509 0662057A49 1k 1 16W 5 T3001 2508396X02 TRANSFORMER T3002 2508397X02 TRANSFORMER U3101 5186144B01 FM IF IC SA616 U3111 5113805A86 IC QUAD ANALOG MUX DEMUX U3115 5113805A86 IC QUAD ANALOG MUX DEMUX...

Page 225: ...4509 D0201 D0651 D4001 D4002 D4003 D4004 D4005 D4006 D4051 D4221 D4401 D4471 D4472 2 3 4 5 6 FL3101 2 3 4 5 6 FL3102 4 3 2 FL3112 FL3114 18 1 J0451 20 11 10 J0501 J0601 2 3 J4401 L0481 L0482 L3100 L3101 L3124 L4001 L4002 L4003 L4004 L4005 L4006 L4008 L4051 L4053 L4054 L4201 L4221 1 3 L4303 L4304 L4305 1 3 L4312 L4313 L4331 L4371 L4401 L4403 L4411 L4422 L4471 L4472 L4491 L4493 M3421 Q0110 Q0177 Q01...

Page 226: ... Q4002 Q4004 Q4331 Q4332 1 2 3 Q4421 Q4472 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266 R0267 R0273 R0274 R0275 R0276 R0323 R0324 R0331 R0332 R0333 R0335 R0341 R0342 R0343 R0344 R0345 R0346 R0347 R0401 R0407 R0408 R0409 R0412 R0441 R0467 R0468 R0481 R0482 R0511 R0512 R05...

Page 227: ..._PWR_SET_UHF_PA_1 TP4401 2 2K R4422 U4508 INT_SWB 2200pF G GND1 GND2 S1 S2 S3 S4 C4502 Q4441 D 10K FECTRL_2_UHF_PA_1 R4454 12K R4452 39K R4421 18nH L4403 TP4404 FECTRL_1 18pF C4420 R4506 10K CLK 51 R4431 10K R4475 15 R4402 C4423 R4427 1uF 2 7 2 7 R4425 C4415 C4444 8 2pF 1 POS 022uF HEATSINK M3421 R4511 4 7 C4404 100pF 4 3pF TP4405 RESET_UHF_PA_1 C4418 MOSBIAS_2_UHF_PA_1 100K R4406 2 7K 100K R4508 ...

Page 228: ...26 2 4pF C4262 330pF C4203 NU 100pF C4244 01uF C4210 VSF 2 2uF NU D4261 PRESC_UHF_FN_1 01uF C4231 150 R4201 L4201 390nH C4242 C4253 4 7uF 100pF MODIN VCOMOD BWSELECT_UHF_FN_1 C4221 01uF 0 R4211 0 1uF C4222 2 2uF C4215 NU C4207 100pF L4221 12uH X ERR X GND X IN X NR X OUT X SD TP4201 ADP3300 U4211 R4204 PRESC 47 C4252 VSF_UHF_FN_1 6 A1 5 A2 4 A3 K1 1 K2 2 K3 3 1000pF VCNTL 1 D4201 16 8MHz Y4262 TTS...

Page 229: ...pF C4305 3 9pF 100pF 180 R4304 CR4321 PRESC_UHF_VCO RXINJ 30 R4303 1 5pF 100pF C4315 5 6K C4314 L4304 390nH R4301 VCOBIAS_2_UHF_VCO TXINJ 1 3 TRB_UHF_VCO Q4333 2 6 4 CR4301 VCTRL 390nH TXINJ_UHF_VCO C4308 0 1uF L4305 C4309 100pF 10 R4305 C4351 100pF C4353 0 1uF Q4301 VSF_UHF_VC0 VCOBIAS_2 5V GND 2 2uF C4354 R4361 180 L4361 1000pF C4361 L4331 33nH C4352 33nH 0 1uF 10 TX_SWITCH 13 VCC_BUFFERS 14 VCC...

Page 230: ...pF R4064 0 C4018 12pF C4023 0 D4007 IN NEG POS R4022 R4017 TBD L4005 R4016 3 3K 3 3K C4028 01uF R4018 Q4002 1 8pF 9V3_UHF_FE C4026 9V3 15nH Q4003 R4004 2 7K C4031 13pF 0 IN NEG POS D4003 L4004 TBD C4007 30pF 33pF TP4003 IF C4006 R4060 1 2 3 5 4 330K XFMR T4051 C4069 01uF FECTRL_1_UHF_FE 1 8pF 0 C4027 20pF C4066 R4052 C4019 R4072 10K R4071 10K FECTRL_1 R4070 390 RXIN_UHF_FE D4001 C4005 10 33pF 1 8p...

Page 231: ... IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP_DEC2 14 LIMIN 11 LIMOUT 7 SA616 U3101 8 MC74HC4066 U3115 1 CNTL 13 1 2 VDD 14 VSS 12K R3101 IFIN_U HF_IF_1 C3133 10uF C3152 01uF 0 1uF C3142 DISCAUDIO L3100 0 1uF 9V3 NU 455KHz 3 2 1 C3134 33pF BWSELECT Y3102 C3103 R3152 C3147 0 1uF 10K 0 1uF C3111 OUT 6 20pF C3101 GND1 1 2 GND2 4 GND3 GND4 5 IN 3 30pF 12R16 FL3102 33pF C3136 C3135 NU L3124 CNTL 12 11 10...

Page 232: ...3 2113740F51 100pF C4244 2113740F51 100pF C4245 2113740F51 100pF Circuit Ref Motorola Part No Description C4246 2113740F51 100pF C4251 2113743E20 10uF C4252 2113741F25 1000pF C4253 2311049A56 4 7uF C4254 2113743E20 10uF C4255 2113740F51 100pF C4263 2113743E20 10uF C4287 2113740F51 100pF C4289 2113743E20 10uF C4301 2113740F51 100pF C4302 2113740L16 8 2pF C4303 2113740L16 8 2pF C4304 2113740L08 3 9p...

Page 233: ...hm R3113 0662057A37 330 Ohm R3115 0662057A39 390 Ohm R3116 0662057A37 330 Ohm Circuit Ref Motorola Part No Description R3117 0662057A83 27K Ohm R3118 0662057A69 6800 Ohm R3123 0662057B47 0 Ohm R3130 0662057A18 51 Ohm R3132 0662057A77 15K Ohm R3133 0662057A71 8200 Ohm R3134 0662057A73 10K Ohm R3135 0662057A51 1200 Ohm R3141 0662057A39 390 Ohm R3142 0662057A55 1800 Ohm R3144 0662057A58 2400 Ohm R314...

Page 234: ...51 Ohm R4474 0680194M18 51 Ohm R4475 0662057A73 10K Ohm R4491 0662057A73 10K Ohm R4501 0662057A69 6800 Ohm R4502 0662057A83 27K Ohm R4504 0662057A73 10K Ohm R4505 0662057B09 300K Ohm R4507 0662057A80 20K Ohm R4508 0662057A97 100K Ohm R4509 0662057A49 1000 Ohm R4511 0662057C19 4 7 Ohm SH4301 2602641Y02 SHIELD SH4302 2602641Y02 SHIELD T4051 2505515V03 XFMR MIXER 4 1 T4052 2505515V04 XMFR MIXER 5 1 U...

Page 235: ...GM328 GM338 GM398 Mobile Radios UHF Band 2 450 527MHz Service Information Issue December 2003 ...

Page 236: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 237: ...Transmitter Power Amplifier PA 25 W 2 3 3 1 First Power Controlled Stage 2 4 3 2 Power Controlled Driver Stage 2 4 3 3 Final Stage 2 4 3 4 Directional Coupler 2 5 3 5 Antenna Switch 2 5 3 6 Harmonic Filter 2 5 3 7 Power Control 2 5 4 0 UHF 450 527 MHz Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 7 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Oper...

Page 238: ... 3 UHF Band 2 450 527 MHz 1 25W 8485671Z03 Top Side 4 3 UHF Band 2 450 527 MHz 1 25W 8485671Z03 Bottom Side 4 4 UHF Band 2 450 527 MHz Power Amplifier 1 25W 4 5 UHF Band 2 450 527 MHz FRACN 4 6 UHF Band 2 450 527 MHz Voltage Controlled Oscillator 4 7 UHF Band 2 450 527 MHz Receiver Front End 4 8 UHF Band 2 450 527 MHz IF 4 9 UHF Band 2 PCB 8485671Z03 Parts List 1 25W 4 10 ...

Page 239: ..._ GM328 Control Head Direct Mount X GCN6114_ GM338 Control Head Direct Mount X GCN6115_ GM398 Control Head Direct Mount X X IMUE6022_ Tanapa WM 450 527 MHz 1 25W X IMUE6043 Tanapa WM 450 527 MHz 1 25W X X X RAE4155_ BNC 470 512 MHz 1 4 Wave Roof Mount X X X RAE4156_ BNC 470 494 MHz 3 5 Gain Roof Mount X X X RAE4157_ BNC 494 512 MHz 5dB Gain Roof Mount X 6804113J74 GM328 User Guide X 6804112J06 GM3...

Page 240: ... H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 186mm 1 25W 59mm x 179mm x 198mm 25 45W add 9mm for Volume Knob Dimensions H x W x D mm Depth excluding knobs GM398 72mm x 185mm x 188mm add 8mm for Volume Knob Weight GM328 GM338 1400 g Weight GM398 1500 g Sealing Withstands rain testing per MIL STD 810 C D E and IP54 Shock and Vibration Protection provided via impact resistant housing exce...

Page 241: ... dB 12 5 kHz 70 dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 450 527 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Base Mode 70dB 1 25W model only Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious ...

Page 242: ...cifications Availability subject to the laws and regulations of individual countries Audio Response 300 3000Hz 20 25kHz 300 2550Hz 12 5kHz 1 to 3 dB Conducted Spurious Emission ETS 57 dBm 1 GHz 47 dBm 1 GHz Receiver UHF ...

Page 243: ...mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack Antenna Control...

Page 244: ...a L5003 and R5002 A switchable 3dB pad R5066 R5007 R5063 R5064 and R5070 controlled via line FECTRL_2 and Q5004 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal The varactor diodes D5004 and D5005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A fol...

Page 245: ...SCAUDIO which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuitry A Received Signal Strength Indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the microprocessor U0101 pin 63 and in addition is available at accessory connector J0501 15 3 0 UHF 450 527 MHz Transmitter Power Amplifier PA 25 W The radio s 25W PA is a t...

Page 246: ... proper thermal contact to the chassis 3 2 Power Controlled Driver Stage The next stage is an LDMOS device Q5421 providing a gain of 12dB This device requires a positive gate bias and a quiescent current flow for proper operation The bias is set during transmit mode by the drain current control op amp U5402 2 and fed to the gate of Q5421 via the resistive network R5429 R5418 R5415 and R5416 Op amp...

Page 247: ...attenuate harmonic energy of the transmitter to specifications level R5491 is used to drain electrostatic charge that might otherwise build up on the antenna The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits improving spurious response rejection 3 7 Power Control The transmitter uses the Power Control IC PCIC U5501 to control th...

Page 248: ...olled Oscillator VCO 4 1 Reference Oscillator The reference oscillator Y5262 contains a temperature compensated crystal oscillator with a frequency of 16 8 MHz An Analogue to Digital A D converter internal to U5201 LVFRAC N and controlled by the microprocessor via serial interface SRL sets the voltage at the warp output of U5201 pin 25 to set the frequency of the oscillator The output of the oscil...

Page 249: ...d by the positive voltage multiplier circuitry D5201 C5202 C5203 This voltage multiplier is basically a diode capacitor network driven by two 1 05MHz 180 degrees out of phase signals U5201 14 and 15 Output LOCK U5201 4 provides information about the lock status of the synthesizer loop A high level at this output indicates a stable loop IC U5201 provides the 16 8 MHz reference frequency at pin 19 T...

Page 250: ...R5311 will tune the full TX frequency range TXINJ from 450 MHz to 527 MHz and at varactor diodes CR5301 CR5302 and CR5303 will tune the full RX frequency range RXINJ from 405 MHz to 482 MHz The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit an external transistor Q5301 is used in conjunction with the internal transistor for better side band noise Similarly...

Page 251: ...3 C5221 C5225 L5221 transforms this current into a voltage that is applied to the varactor diodes CR5311 for transmit CR5301 CR5302 CR5303 for receive and alters the output frequency of the VCO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U5201 40 or BIAS 2 U5201 39 The currents are set by the value of R5251 or R5252 respec...

Page 252: ...2 10 UHF 450 527 MHz Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 253: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 254: ...at R5060 Inject RF into J5401 Is tuning voltage OK No Yes Check RF amp Q5003 Stage Check filter between C5015 T5051 Yes Check T5051 T5052 D5051 R5052 L5008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltage ci...

Page 255: ...5403 to Ground NO YES Voltage at TP5402 rises Check PA Stages NO YES PCIC U5501 Pin 14 9 3V DC Check 9 3 V Regulator U0641 NO YES PCIC U5501 Pin 16 4V DC Replace PCIC U5501 NO YES TP5404 9 1V DC If U5201 Pin 2 is high replace PCIC U5501 otherwise check controller and FGU YES NO TP5403 0 5V DC Replace PCIC U5501 Check Forward Power Sense Circuit D5451 Check Forward Power Sense Circuit D5451 NO YES ...

Page 256: ...U5402 1 Pin 3 8 8V Check S5440 R5442 and R5443 YES Pin 3 Voltage 0 51 Voltage at Pin 1 NO Replace U5401 2V DC Voltage at U5402 2 Pin 7 6V Check Components between U5402 2 Pin 7 and Q5421 Check Resistive Network at Pins 5 6 before replacing Q5421 YES DC Voltage at U5402 2 Pin 5 8 8V Check Components between U5402 2 Pin 7 and Q5421 Check Resis tive Network at Pins 5 6 before replacing Q5421 NO Check...

Page 257: ...1 Pin 6 3V Supply Replace Q5441 Check FGU U5301 NO Check Components between TP5401 C5417 NO YES ASFIC U0221 Pin 6 1 4V DC Check Bias Tuning before replacing ASFIC U0221 Check Components between ASFIC and Q5441 before replacing Q5441 YES RF Voltage Q5421 Gate 1V NO Check Components between C5417 Q5421 YES RF Voltage Q5441 Gate 4V NO Check Components between Q5421 Q5441 Check Components between Q544...

Page 258: ...place U5201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U5201 Replace or resolder necessary components Is RF level at U5201 Pin 32 12 x 25 dBm Are R5221 R5222 R5223 C5221 C5222 C5223 OK Replace U5201 If C5227 is OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U5201 toggle when channel is changed Check programming lines between U0101...

Page 259: ...1 If C5321 and R5321 are OK then replace CR5321 Replace C5322 Replace C5325 NO NO YES YES TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U5201 Pin 2 and U5301 Pin 19 Is RF available If all parts from U5301 Pin 8 to Base of Q5332 are OK replace U5301 If all parts associated with the pins are OK replace Q5332 If all parts from collector of Q5332 to TP5003 are OK Replace ...

Page 260: ...3 8 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 261: ...f the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components The UHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF 1 25W Diagrams and Parts Lists PCB 8485671Z03 Main Board Top Side 8485671Z03 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 1 25W FRA...

Page 262: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 263: ...2 C5428 C5423 C5424 C5420 C5435 R5431 R5432 C5434 C5458 C5431 C5454 C5457 C5455 C5432 8 7 6 5 4 3 2 Q5431 C5448 C5449 R5404 R5406 D5401 U5502 C5507 C5508 C5441 C5461 C5446 C5443 C5445 C5447 C5442 C5444 L5491 C5491 C5462 L5472 D5471 C5492 C5496 C5498 3 2 J5401 R5491 C5497 L5493 L5002 L5001 Q5001 Q5003 R5020 R5021 R5007 R5001 R5005 R5022 R5064 R5003 R5004 L5006 L5003 D5003 D5002 C5009 C5014 C5033 C5...

Page 264: ...45 R0341 C0304 C0305 C0324 C0325 C0343 U0351 8 5 4 U0301 1 14 15 28 D0301 C0302 C0351 C0354 C0352 C0301 C0303 U0331 Q0641 R0642 R0335 R0643 R0331 R0332 R0333 R0641 R0481 R0482 C0331 C0645 C0353 C0644 C0641 C0662 U0141 9 8 1 16 TP0101 C0141 R0468 R0543 R0593 8 5 4 1 U0652 C0255 C0121 C0122 C0105 C0123 U0122 1 7 8 21 22 R0117 R0121 R01 R0111 R0112 12 TP0103 TP0104 TP0492 J0552 18 1 C0103 C0111 8 5 4...

Page 265: ...7 17nH 1uF C5438 C5481 033uF S3 S4 Q5431 D G GND1 GND2 S1 S2 2 216x width 2 032 C5461 NU C5462 NU R5475 10K C5453 100pF 10K R5454 2 7K R5452 R5455 100K 51 R5474 D5472 TP5403 1 1000pF C5451 43 67nH L5471 D5451 9V3FLT A 30pF C5473 30pF C5472 C5452 11pF 120 R5457 R5473 51 5 6V 2 3 1 C5471 100pF VR3471 NC Q5472 R5471 470 Q5471 47K 47K MOSBIAS_1 1 TP5402 R5446 0 C5437 033uF C5436 10uF 57R01 L5436 C5482...

Page 266: ...ASE INDMULT 16 IOUT 43 4 LOCK NC1 17 NC2 29 NC3 31 CCOMP 42 6 DGND IADAPT 45 AGND 22 AUX1 48 AUX2 1 AUX3 2 AUX4 3 BIAS1 40 BIAS2 39 ADAPTSW 46 VMULT1 VMULT2 14 VMULT3 12 VMULT4 11 13 VRO XTAL1 23 24 XTAL2 SFIN 30 VCP 47 15 5 PD_VDD PRE_VDD 34 PVREF 35 MODIN 10 MODOUT 41 CEX 9 CLK 8 DATA 7 DVDD 36 FREFOUT 19 AVDD 20 U5201 63A27 C5244 100pF 100pF C5242 4 98 Vdc 2 51 Vdc 4 95 Vdc 0 Vdc 47K R5261 R524...

Page 267: ...9 TX_BASE 16 TX_EMITTER 15 TX_IADJ 1 COLL_RFIN 4 FLIP_IN 20 GND_BUFFERS 11 GND_FLAG 9 17 GND_LOGIC PRESC_OUT RX_BASE 5 RX_EMITTER 6 U5301 50U54 10 13 8 7 12 4 5 Vdc Rx 2 58 Vdc Tx 100pF C5383 39nH C5365 L5362 3 3pF RXSW NU 4 2 Vdc Rx 0 Vdc Tx 10 R5335 PRESC PRESC_UHF_VCO NU NU R5347 0 R5333 10K R5334 0 C5334 51pF NU NU 0 1uF C5308 L5305 390nH C5309 100pF R5305 10 VSF VSF_UHF_VC0 VSF 4 5 Vdc Q5301 ...

Page 268: ... 1 2 3 5 4 C5052 82pF R5051 51 470nH L5008 C5066 IF_UHF_FE L5051 150nH IF NU 0 R5052 R5053 R5055 R5054 NU NU NU 0 7 VDC 4 6 VDC L5006 15nH 2 7K R5004 C5009 8 2pF D5003 R5003 4 7K 100pF C5034 Q5001 R5020 10 R5021 C5033 10 100pF Q5003 C5020 16pF C5019 27pF C5021 18pF C5022 16pF C5023 R5012 100K NU 1000pF C5024 R5019 NU GND_UHF_FE GND Q5002 270nH L5003 01uF C5028 R5018 3 3K C5013 3300pF 330pF C5012 0...

Page 269: ... MC74HC4066 9180468V06 3 GND 1 IN OUT FL3114 2 01uF C3151 CFUCJ455D U3115 3 MC74HC4066 6 CNTL 14 VDD 7 VSS 8 9 10K R3151 9180468v04 2 OUT FL3113 CFUCJ455F 3 GND 1 IN NU 10 VDD 14 VSS 7 MC74HC4066 U3115 4 CNTL 12 11 10K R3153 9V3 9V3 20 25kHz 5VDC 12 5kHz 0VDC BWSELECT_VHF_IF_1 BWSELECT R3154 10K Q3151 Q3152 C3152 01uF 10K R3152 9V3 47K 47K 47K 47K 100 R3104 NU R3105 100 9V3 L3124 NU 1uH 0 R3123 C3...

Page 270: ...43L09 470pF C0496 2113743L09 470pF C0497 2113743L09 470pF C0499 2113743L09 470pF C0501 2113741F49 10nF Circuit Ref Motorola Part No Description C0502 2113741F17 470pF C0503 2113741F17 470pF C0504 2113741F17 470pF C0505 2113741F17 470pF C0506 2113741F17 470pF C0508 2113741F17 470pF C0509 2113741F17 470pF C0510 2113741F17 470pF C0511 2113741F17 470pF C0512 2113741F17 470pF C0513 2113741F17 470pF C05...

Page 271: ...11049A45 10uF C5437 2113741A57 0 033uF C5438 2311049A08 1uF C5439 2111078B42 100pF C5440 2113741F25 1000pF C5441 2111078B05 4 7pF C5442 2111078B19 16pF C5448 2111078B29 33pF C5449 2111078B29 33pF C5451 2113741F25 1000pF C5452 2113740F28 11pF C5453 2113740F51 100pF C5454 2111078B01 3 3pF C5455 2111078B19 16pF C5457 2111078B34 47pF C5458 2111078B35 51pF C5461 2111078B11 8 2pF C5471 2113740F51 100pF ...

Page 272: ...5 4 7K R0184 0662057A89 47K R0185 0662057A65 4 7K R0186 0662057A89 47K R0201 0662057A25 100 R0202 0662057A43 560 R0203 0662057A25 100 R0204 0662057A43 560 R0205 0662057A73 10K R0206 0662057A73 10K Circuit Ref Motorola Part No Description R0207 0662057A57 2 2K R0208 0662057A57 2 2K R0211 0660076E70 7 5K R0212 0660076E70 7 5K R0221 0662057A82 24K R0222 0662057A82 24K R0223 0662057A84 30K R0224 06620...

Page 273: ...0662057A18 51 R5416 0662057A18 51 R5418 0662057A57 2 2K R5421 0662057A86 36K R5422 0662057A58 2 4K R5423 0662057A87 39K R5424 0662057C11 2 2 R5425 0662057C11 2 2 R5426 0662057C11 2 2 R5427 0662057C11 2 2 R5428 0662057A58 2 4K R5429 0662057A49 1K R5431 0662057C51 100 R5432 0662057C51 100 R5441 0662057A87 39K R5442 0662057A57 2 2K R5443 0662057A87 39K R5445 0662057A58 2 4K Circuit Ref Motorola Part ...

Page 274: ...4 14 UHF Band 2 1 25W PCBs Schematics Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 275: ...GM338 GM398 Mobile Radios Low Band Service Information Issue December 2003 ...

Page 276: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 277: ...ceiver Back End 2 3 2 6 Extender Noise Blanker 2 3 3 0 Transmitter Power Amplifier PA 60 W 2 4 3 1 Power Controlled Stage 2 4 3 2 Driver Stage 2 5 3 3 Final Stage 2 5 3 4 Antenna Switch 2 5 3 5 Harmonic Filter 2 5 3 6 Power Control 2 6 3 7 TX Safety Switch 2 6 4 0 Frequency Synthesis 2 7 4 1 Fractional N Synthesizer 2 7 4 2 Voltage Controlled Oscillator VCO and Buffers 2 8 4 3 Synthesizer Operatio...

Page 278: ...led Oscillator 4 18 Low Band Range 2 36 0 42 0 MHz Voltage Controlled Oscillator 4 19 Low Band Range 3 42 50 MHz Voltage Controlled Oscillator 4 20 Low Band Range 1 29 7 36 0 MHz Power Amplifier Sheet 1 of 2 4 21 Low Band Range 1 29 7 36 0 MHz Power Amplifier Sheet 2 of 2 4 22 Low Band Range 2 36 0 42 0 MHz Power Amplifier Sheet 1 of 2 4 23 Low Band Range 2 36 0 42 0 MHz Power Amplifier Sheet 2 of...

Page 279: ...86908Z04 4 40 Low Band Range 1 2 3 IF sheet 2 of 2 for PC Boards 8486206B08 8486207B07 8486908Z04 4 41 Low Band Range 1 2 3 29 7 36 0 36 0 42 0 42 50 MHz Noise Blanker 4 42 Low Band Range 1 PCB 8486206B06 Parts List 4 43 Low Band Range 2 PCB 8486207B05 Parts List 4 49 Low Band Range 3 PCB 8486908Z02 Parts List 4 54 Low Band Range 1 PCB 8486206B08 Parts List 4 60 Low Band Range 2 PCB 8486207B07 Par...

Page 280: ...iv THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 281: ...60W Item Description X X X GCN6114_ Preferred Control Head Direct Mount X IMUB6000_ Tanapa WM 29 7 36 0 MHz 40 60W X IMUB6001_ Tanapa WM 36 0 42 0 MHz 40 60W X IMUB6002_ Tanapa WM 42 0 50 0 MHz 40 60W X RAB4002 Low Band 29 7 36 0 MHz 1 4 Wave Base Loaded X RAB4003 Low Band 36 0 42 0 MHz 1 4 Wave Base Loaded X RAB4004 Low Band 42 0 50 0 MHz 1 4 Wave Base Loaded X X X 6804112J06 GM338 User Guide x I...

Page 282: ...3 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 60mm x 179mm x 250mm 45 60W Weight GM338 2064 g Sealing Withstands rain testing per MIL STD 810 C D E and IP54 Shock and Vibration Protection provided via impact resistant housing exceeding MIL STD 810 C D E Dust Salt Fog Protection provided via environment resistant housing exceeding MIL STD 810 C D E ...

Page 283: ... dB 20 30 kHz Audio Response 300 3000Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver Low Band Frequencies Full Bandsplit Low Band 1 29 7 36 0 MHz Low Band 2 36 0 42 0 MHz Low Band 3 42 0 50 0 MHz Channel Spacing 12 5 20 30 kHz Sensitivity 12 dB SINAD 0 25 µV 0 22 µV typical Intermodulation 80 dB Base Mode 70dB 1 25W model only Adjacent Channel Selectivity 65 dB 1...

Page 284: ...1 4 Technical Specifications THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 285: ...five major blocks front end bandpass filters and pre amplifier first mixer high IF and blanker switches low IF and receiver back end and Extender noise blanker Two fixed tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the high IF of 10 7 MHz High side first injection is used Figure 2 1 Low Band Receiver Block Diagram Demodulator Dela...

Page 286: ... best half IF attenuation 2 3 First Mixer and High Intermediate Frequency IF The signal coming from the front end is converted to the high IF frequency of 10 7 MHz using a cross over quad diode mixer U1051 The high side injection signal RXINJ from the frequency synthesizer circuitry is filter by a 7 pole low pass filter L1012 14 and associated circuitry which removes second harmonic content from t...

Page 287: ... of 120 mV rms at 60 deviation from U1103 pin 8 AUDIOOUT which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuitry A received signal strength indicator RSSI signal is available at U1103 pin 5 having a dynamic range of 70 dB The RSSI is interpreted by the microprocessor U0101 pin 63 and in addition is available at accessory connector J0501 15 2 6 Extender Noise Blanker The 10 7 MHz...

Page 288: ... prevent the transmitter from being keyed with the cover removed Figure 2 2 Low Band Transmitter Block Diagram 3 1 Power Controlled Stage The first stage U1401 is a 20dB gain integrated circuit containing two LDMOS FET amplifier stages It amplifies the RF signal from the VCO TXINJ The output power of stage U1401 is controlled by a DC voltage applied to pin 1 from the power control circuit U1503 pi...

Page 289: ...s are replaced the bias voltage must be tuned using the Tuner software Care must be taken not to damage the device by exceeding the maximum allowed bias current The device s drain current is drawn directly from the radio s DC supply voltage input PASUPVLTG via current measurement resistor R1409 A matching network combines the output of the two devices and provides a 50 ohm source for the antenna s...

Page 290: ...ed as VCNTRL to the power adjust input pin of the first transmitter stage U1401 This adjusts the transmitter power output to the intended value Variations in antenna impedance cause variations in the DC current of the final stages and the PCIC adjust the control voltage above or below its normal value to reduce power if current drain increases or raise power if current drain decreases Capacitors C...

Page 291: ...put voltage of 8 3 volts DC VSF at pin 28 External device Q1201 allows greater current sourcing capability The VSF source supplies the receive and transmit VCOs and first buffer stages The synthesizer IC supply voltage is provided by a dedicated 5V regulator U1250 to minimize power supply noise In order to generate a high voltage to supply the phase detector charge pump output stage at pin VCP U12...

Page 292: ...microprocessor This controls the setting of an A D converter with its output WARP pin 25 applied to CR1201 4 2 Voltage Controlled Oscillator VCO and Buffers Separate voltage controlled oscillator VCO and buffer circuits shown in Figure 2 4 are used for receiver injection and transmitter carrier frequency generation Since the receiver uses high side injection the receiver VCO frequency range is 10 ...

Page 293: ... MODOUT U1201 pin 41 is superimposed on the DC steering line voltage by capacitive divider C1215 C1208 and C1212 causing modulation of the TX VCO using the same varactor as used for frequency control 4 3 Synthesizer Operation The complete synthesizer subsystem comprises mainly of low voltage LVFRAC N synthesizer IC Reference Oscillator crystal oscillator with temperature compensation charge pump c...

Page 294: ...ated by a high level of signal LOCK U1201 4 In order to modulate the PLL the two spot modulation method is utilized Via pin 10 MODIN on U1201 the audio signal is applied to both the A D converter low frequency path and the balanced attenuator high frequency path The A D converter converts the low frequency analog modulating signal into a digital code that is applied to the loop divider thereby cau...

Page 295: ...ller in the case of no audio Or else go to B Yes No Spray or inject 10 7MHz into XTAL Filter FL1102 Audio heard B Yes No Check 2nd LO 10 245MHz at C1129 LO present B Yes Check volt ages on U1103 OK Biasing OK No No A Yes Check Q1106 bias for faults Replace Q1106 Go to B Yes No Check cir cuitry around U1103 Replace U1103 if defect Check circuitry around Y1101 Replace Y1101 if defect ...

Page 296: ...ers J1401 and ant switch Check preselector and RF amp Inject RF into J1401 No Yes Check RF amp Q1001 Stage Check filter between C1017 mixer U1051 Yes Check for detailed mixer Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C1036 to Q1106 Check for bad XTAL filter No Yes IF signal at Q1106 collec tor Before replacing U1103 check U1103 voltages Yes Is 9V3 present Check Supply Volta...

Page 297: ...f Q1402 Q1403 Check circuitry between Q1402 Q1403 and Antenna Port Check MOSBIAS_1 Supply and Feed Network No 18V pp Yes No Yes 1 A No Check Q1401 Device Yes CURRENT RF Junction R1413 R1414 DC Voltage TP1402 TP1403 Yes Check MOSBIAS_2 MOSBIAS_3 and Feed Networks Check DC AC Gate Circuits of Q1402 Q1403 Check Supply Feed and or PowerControl Circuits No 18V pp Check U1401 Device AC Voltage Gate of Q...

Page 298: ... Shorts Is there a short between Pin 47 and Pins 14 15 of U1201 Replace or resolder necessary components Is RF level at U1201 Pin 32 5 x 0 dBm Are R1205 R1206 R1208 C1212 C1213 C1214 OK Replace U1201 If Q1202 Feedback Amp stage is OK Then see VCO troubleshoot ing chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U1201 toggle when channel is changed Check programming lines between U0101...

Page 299: ... IS RF AVAILABLE AT BASE OF Q1304 TROUBLESHOOT Q1303 OSCILLATOR STAGE CIRCUITRY IS RF AVAILABLE CHECK PARTS BETWEEN U1051 NO NO NO NO NO YES YES YES YES YES RX VCO LOW OR NO RF SIGNAL AT INPUT TO PA VISUAL CHECK OF BOARD OK 8 5V DC AT U1378 PIN 3 4 5V DC AT U1377 PIN 2 8 5V DC AT U1377 PIN 4 IS RF AVAILABLE AT BASE OF Q1307 YES YES YES YES YES NO NO NO NO NO TX VCO AND Q1305 AT BASE Q1305 TROUBLES...

Page 300: ...3 6 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 301: ... PCB and parts list are shown in the tables below Table 4 1 Low Band Range 1 29 7 36 0MHz Diagrams and Parts Lists PCB 8486206B06 Main Board Top Side 8486206B06 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 40 60W FRACN Voltage Controlled Oscillator Receiver Front End Controller T6 IO T6 Page 4 15 and Page 4 16 Page 4 9 Page 4 12 Page 4 21 Page 4 24 Page 4 26 Parts List 84862...

Page 302: ...Lists PCB 848608Z02 Main Board Top Side 848608Z02 Main Board Bottom Side Page 4 7 Page 4 8 SCHEMATICS Power Amplifier 40 60W Voltage Controlled Oscillator Receiver Front End Controller T9 FRACN IO T9 Page 4 19 and Page 4 20 Page 4 14 Page 4 23 Page 4 25 Page 4 11 Page 4 27 Parts List 848608Z02 Page 4 44 ...

Page 303: ...306 D0201 D0651 D1001 D1501 D1502 D1601 E1401 FL1101 IN GNDA GNDB OUT FL1102 FL1104 4 3 2 FL1106 18 1 J0451 20 11 10 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q01...

Page 304: ... L1405 L1408 L1415 L1416 L1417 L1419 L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R02...

Page 305: ...T FL1102 FL1104 4 3 2 FL1106 18 1 J0451 20 11 10 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q0177 Q0181 Q0185 Q0681 Q1001 Q1102 Q1201 Q1303 Q1307 Q1308 2 3 4 5 6 7...

Page 306: ... L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1107 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0103 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R02...

Page 307: ...D1502 D1601 E1401 FL1101 IN GNDA GNDB OUT FL1102 FL1104 4 3 2 FL1106 18 1 J0451 20 11 10 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q0177 Q0181 Q0185 Q0681 Q1001 Q...

Page 308: ...1 L1404 L1405 L1415 L1416 L1417 L1419 L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R0...

Page 309: ... 4 3 2 FL1106 18 1 J0451 20 11 10 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q0177 Q0181 Q0185 Q0681 Q1001 Q1102 Q1201 Q1303 Q1307 Q1308 2 3 4 5 6 7 8 Q1402 2 3 4 ...

Page 310: ...5 L1416 L1417 L1419 L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1107 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0103 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R0205 R0...

Page 311: ...02 FL1104 4 3 2 FL1106 18 1 J0451 20 11 10 1 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q0177 Q0181 Q0185 Q0681 Q1001 Q1102 Q1201 Q1303 Q1307 Q1308 2 1 3 4 5 6 7 8...

Page 312: ...L1408 L1415 L1416 L1417 L1419 L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0103 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R020...

Page 313: ...102 FL1104 4 3 2 FL1106 18 1 J0451 20 11 10 J0501 J0601 3 2 J1401 L0481 L0482 L1001 L1003 L1005 L1006 L1008 L1010 L1101 L1103 L1104 L1107 L1112 L1204 L1206 L1207 L1302 L1303 L1304 L1305 L1306 L1318 L1321 L1322 L1324 L1402 L1403 L1406 L1413 L1414 L1418 L1420 L1421 L1422 L1423 L1601 L1602 L1603 L1604 L1606 L1607 M1401 Q0110 Q0177 Q0181 Q0185 Q0681 Q1001 Q1102 Q1201 Q1303 Q1307 Q1308 2 3 4 5 6 7 8 Q1...

Page 314: ...7 L1419 L1424 L1425 L1426 L1605 Q0151 Q0171 Q0173 Q0183 Q0271 Q0641 Q0661 Q0662 Q0663 Q1002 Q1003 Q1101 Q1103 Q1104 Q1105 Q1106 Q1107 Q1202 Q1304 Q1305 Q1306 1 2 3 Q1401 Q1404 Q1503 Q1506 Q1602 Q1603 Q1604 Q1605 Q1606 Q1607 Q1610 R0103 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0185 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0...

Page 315: ...1202 A1 A2 A3 680 R1213 100 R1212 C1211 01uF 220pF IN_5V_RF_REG IN_5V_RF_REG_FRACN_1 C1204 C1217 01uF PRE_IN 4 7uF C1216 FN0 NP SH1201 SHIELD MODIN R1204 0 SH1202 SHIELD 16_8MHZ_FRACN_1 5V_FRACN_1 CLK FN0 NP 1pF C1221 FN0 NP 16_8MHZ C1209 10uF 01uF C1225 C1201 0 1uF R1210 220 R1205 680 L1201 C1218 0 1uF 1uF 27uH C1212 01uF C1230 01uF C1229 R1218 47 CR1201 TRB_FRACN_1 0 R1201 5V 680nH L1205 100 R12...

Page 316: ... NOISE_BLNKR_FRACN_1 Q1202 MMBR951 PRE_IN C1220 4 7uF 01uF C1217 FN0 NP C1216 4 7uF R1204 SHIELD SH1201 16_8MHZ_FRACN_1 MODIN 0 SHIELD SH1202 FN0 NP 16_8MHZ 5V_FRACN_1 CLK FN0 NP C1221 1pF 10uF C1209 C1225 01uF 0 1uF C1201 220 R1210 680 R1205 0 1uF C1218 27uH C1212 L1201 01uF 1uF 01uF C1230 47 R1218 C1229 TRB_FRACN_1 CR1201 R1201 0 039uF C1232 FN0 NP R1207 820K FN0 NP 1 C1254 01uF Y1201 XTAL 16 8M...

Page 317: ...FOUT 28 TEST1 37 TEST2 38 VBPASS 21 VCP 47 NC3 31 PD_GND 44 5 PD_VDD PREIN 32 PRE_GND 33 PRE_VDD 34 PVREF 35 REFSEL 18 IADAPT 45 INDMULT 16 IOUT 43 4 LOCK MODIN 10 MODOUT 41 NC1 17 NC2 29 BIAS2 39 CCOMP 42 CEX 9 CLK 8 DATA 7 DGND 6 DVDD 36 FREFOUT 19 ADAPTSW 46 AGND 22 AUX1 48 AUX2 1 AUX3 2 AUX4 3 AVDD 20 BIAS1 40 U1201 63A27 L1204 2 2uH L1202 FN0 NP 27uH A2 A3 K1 K2 K3 C1231 01uF CR1202 A1 FN0 NP...

Page 318: ...1306 27uH FN0 NP C1362 4 7pF VCTRL_VCO_1 C1323 13pF C1336 0 1uF Q1307 C1320 01uF R1328 470 C1306 16pF L1310 390nH 47pF R1346 100 100 C1307 C1304 R1342 FN0 NP 01uF C1344 01uF 10 R1319 R1343 150 VCTRL 9V3 470 R1318 FN0 NP 3 9pF C1354 C1345 0 1uF C1338 01uF SH1301 SHIELD FN0 NP L1311 SH1302 SHIELD 27uH 100 R1345 D S R1327 56 Q1303 R1309 470 470 R1320 FN0 NP 4 7pF C1309 C1346 01uF 01uF C1319 R1314 330...

Page 319: ... 10K R1376 C1343 3 3pF R1333 330 0 1uF 0 1uF C1317 0 C1349 27uH L1309 R1325 C1325 01uF 01uF C1326 C1318 01uF 01uF C1313 C1312 01uF U1377 2 4 1 3 56pF C1341 R1326 56 C1333 27pF 10K R1311 R1313 1 2K 1 Q1305 CR1314 2 3 4 7pF C1335 33uH L1316 33uH L1322 10K 33uH L1314 1K R1330 R1344 C1352 R1338 120 C1350 01uF 15pF 2 3 1 270nH L1321 CR1306 33uH L1324 S PRE_IN L1315 1 2uH Q1306 D PRE_IN_VCO_1 TXINJ_VCO_...

Page 320: ...8 C1313 01uF 01uF C1312 U1377 2 4 47K 10K 47K 10K 47K 4 7K 47K 4 7K 1 3 36pF 56 R1326 C1341 C1333 R1311 10K 22pF R1313 Q1305 1 2K CR1314 2 3 1 C1335 4 7pF L1316 27uH L1322 27uH L1314 27uH 10K R1330 1K R1344 120 R1338 C1352 01uF C1350 15pF 2 3 1 L1321 270nH CR1306 L1324 27uH 820nH L1315 3 6 4 8 C1351 01uF CR1302 1 5 2 7 22 R1336 01uF C1347 Q1308 C1342 36pF C1356 C1360 FN0 NP 3 9pF FN0 NP 3 9pF VSF ...

Page 321: ...01uF MOSBIAS_2_PA_1 C1459 C1485 R1413 10uF 10 10 10 R1474 R1475 88 470nH L1414 C1446 82pF 01 C1443 470pF C1444 R1409 01uF 470pF C1475 PASUPVLTG C1401 R1477 1uF 1uF 3 3K C1467 C1426 E1403 82pF C1431 01uF G GND1 GND2 S1 S2 S3 S4 Q1402 D 88 470nH C1462 10uF L1413 470pF C1477 820 R1450 13Vpp 1 6Vpp R1463 01uF 12K 41nH L1415 C1466 D1402 39K FN0 NP RXIN_PA_1 R1467 L1416 41nH 390 R1458 180nH L1404 10K R1...

Page 322: ...20 9 GND1 8 GND2 25 INT 4 22 NA Q 11 QX 10 1 RFIN RS 29 CI 3 CJ 5 CL 7 CLK 26 CQ 12 CQX 13 DATA 28 F168 U1503 H99S 4 ANO 32 BPOS 27 CEX CSX_PA_1 R1506 R1505 6 8K R1516 39K 680 C1525 0 1uF R1503 3 3K C1510 2200pF 1K R1543 Q1505 R1544 51K R1527 100K R1533 10K FECNTL_2_PA_1 01uF C1528 C1527 01uF 20K R1528 PA_PWR_SET_PA_1 PA_PWR_SET Q1501 100K R1526 10K R1525 FN0 NP 2200pF C1501 R1514 100K 2200pF C150...

Page 323: ...300pF C1481 C1445 470pF C1439 FNO NP C1416 75pF 10 R1417 R1477 3 3K C1484 2200pF R1413 10 R1404 E1403 C1451 51 DEVICE NEAR OUTSIDE OF RADIO L1404 180pF RFOUT2 7 VCNTRL 1 VD1 14 VG1 2 VG2 3 180nH GND3 12 GND4 13 NC1 8 NC2 9 NC3 10 NC4 15 RFIN 16 RFOUT1 6 30C65 U1401 17 EP G2 11 GND1 4 GND2 5 27K R1480 C1477 100pF C1422 01uF 4 7uH L1402 FNO NP R1421 10 R1442 0 C1410 0 1uF D G GND1 GND2 S1 S2 S3 S4 Q...

Page 324: ...01 U1502 6 5 7 8 4 TP1505 DATA_PA_1 K9V1 K9V1_PA_1 R1505 C1507 2200pF 6 8K R1506 39K R1516 680 6 VL 19 VLIM 0 1uF C1525 30 TEMP 14 V10 16 V45 V5EXT 17 VAR1 20 VAR2 18 VAR3 24 15 VG NA 22 11 Q 10 QX RFIN 1 21 RS RSET 31 23 RX 2 T1 26 CLK 12 CQ 13 CQX 28 DATA 9 F168 8 GND1 25 GND2 4 INT 32 ANO 27 BPOS 29 CEX 3 CI 5 CJ 7 CL 2200pF C1510 H99S 4 U1503 Q1505 2200pF C1511 1K R1542 SWITCH S1501 1 2 TP1503...

Page 325: ...68pF C1467 180 R1455 MOSBIAS_3 TP1403 470pF C1440 R1470 2 4K FN0 NP R1422 10 10 R1420 R1451 180 C1470 R1460 1 0 1 1uF 88 470nH L1414 180 R1454 C1426 1uF 01uF C1422 FN0 NP C1413 01uF L1413 88 470nH C1430 240pF 01uF C1434 C1419 01uF R1448 150K FN0 NP 10 R1418 39K FN0 NP C1486 R1466 C1408 0 1uF FN0 NP 330pF PASUPVLTG_PA_1 E1401 RXIN 01uF C1471 01uF C1468 R1417 10 18nH L1415 C1443 130pF 130pF C1444 17...

Page 326: ...F C1523 0 1uF 100K R1509 TP1505 PA_PWR_SET 9V3_PA_1 TEMPSENSE TEMPSENSE_PA_1 C1503 2200pF D1503 D1502 R1545 4 7K Q1506 1K R1543 R1544 51K R1533 CSX CNTLVLTG_PA_1 CNTLVLTG 10K 100K R1511 1000pF FECNTL_2 CLK_PA_1 9V3 C1505 K9V1 9T1 9T1_PA_1 680 K9V1_PA_1 10uF C1532 R1516 100K FN0 NP 1K R1512 100K FN0 NP R1515 C1526 R1510 01uF 100pF FECNTL_2_PA_1 C1528 PA_PWR_SET_PA_1 CLK FECNTL_1 1 2 VOUT D1501 LM50...

Page 327: ...1 390pF C1039 C1037 390pF C1038 300pF 300pF XIN C1007 R1003 470 360pF C1020 C1004 130nH L1006 L1002 160pF 130nH R1008 C1023 360pF 5 GND3 2 IF 6 LO 3 RF 4 7K 4 7K 47K 47K 10K MIXER U1051 1 GND1 4 GND2 FN0 NP 100 R1009 C1036 0 1uF 120pF C1033 C1019 270pF FN0 NP R1010 0 300pF C1040 Q1002 MMBT3906 RXINJ 130nH L1005 IF_FE_1 Q1001 MMBR951 L1007 130nH 220pF 270pF C1009 C1014 130nH L1001 C1029 5 01uF 82pF...

Page 328: ...4 GND2 5 GND3 2 IF 6 LO 3 RF MIXER U1051 FN0 NP FN0 NP 100 R1009 IF 0 R1011 FN0 NP R1010 0 120pF C1004 R1005 180 Q1002 MMBT3906 C1011 120pF IF_FE_1 RXINJ L1007 130nH 220pF C1020 L1004 C1022 220pF RXIN 130nH R1003 470 C1014 160pF 240pF C1009 C1013 0 1uF C1036 01uF C1017 1200pF 130nH L1006 150pF C1027 Q1001 MMBR951 R1002 15 R1004 2 7K 1200pF 130nH L1008 300pF C1026 300pF C1012 300pF C1039 C1003 300p...

Page 329: ...1 1 GND2 4 GND3 5 IF 2 R1009 100 FN0 NP L1008 130nH 330pF C1019 0 R1010 FN0 NP 180pF Q1002 C1004 C1036 0 1uF 240pF C1012 9T1 C1035 51pF 75pF C1011 C1034 75pF 300pF C1025 C1024 160pF 91pF C1003 L1014 220nH 01uF 5 C1028 L1013 330nH 01uF C1002 2 6 4 1 3 RXINJ_FE_1 43pF UMC5N U1001 9V3_FE_1 C1010 1uH L1011 FN0 NP 130pF C1001 8 2K R1007 62pF C1032 10K R1006 C1030 10 0 1uF Q1003 C1033 68pF R1001 15 R101...

Page 330: ...C0106 100pF NU 12 3 0 15 Y0 14 Y1 13 Y2 12 Y3 11 Y4 10 Y5 9 Y6 7 Y7 1 A0 2 A1 3 A2 6 EN_CS1 4 EN_CS2 5 EN_CS3 8 GND 16 VCC 12 MC74HC138A U0141 TP0102 6 5 6 10 R0185 4 7K IO6 17 IO7 18 IO8 19 VCC 28 8 2 6 EN_OE 22 EN_WE 27 14 GND IO1 11 IO2 12 IO3 13 IO4 15 IO5 16 A3 7 A4 6 5 A5 A6 4 A7 3 A8 25 A9 24 EN_CS 20 A0 10 A1 9 21 A10 A11 23 A12 2 A13 26 A14 1 A2 8 6 U0122 63A21 2 2K R0108 8 17 3 9 Q0181 1...

Page 331: ...11 IO1 12 IO2 13 IO3 1 A14 8 A2 7 A3 6 A4 A5 5 4 A6 3 A7 25 A8 U0122 10 A0 9 A1 A10 21 23 A11 2 A12 26 A13 11 6 63A21 Q0181 9 R0104 10K 40 VSSL 87 VSSR XFC 93 48 XIRQ 91 XTAL 94 RESET 12 VDD 39 VDDL 88 VDDR 92 VDDSYN 69 VRH 68 VRL 13 VSS 71 PJ0_CSGP3 72 PJ1_CSGP4 73 PJ2 74 PJ3 75 PJ4 76 PJ5 77 PJ6 78 PJ7 56 PI0 55 PI1 54 PI2 53 PI3 52 PI4 51 PI5 50 PI6 49 PI7 47 PH0_PW1 46 PH1_PW2 45 PH2_PW3 44 PH...

Page 332: ... EN_WE GND 14 11 IO 1 2 A12 26 A13 1 A14 8 A2 7 A3 6 A4 A5 5 4 A6 63A21 U0122 10 A0 9 A1 A10 21 23 A11 11 10K R0114 Q0181 9 R0104 10K 13 VSS 40 VSSL 87 VSSR XFC 93 48 XIRQ 91 XTAL PJ6 78 PJ7 94 RESET 12 VDD 39 VDDL 88 VDDR 92 VDDSYN 69 VRH 68 VRL PI 6 49 PI 7 71 PJ0_CSGP3 72 PJ1_CSGP4 73 PJ2 74 PJ3 75 PJ4 76 PJ5 77 PH6_CSGP2 38 PH7_CSPROG 56 PI 0 55 PI 1 54 PI 2 53 PI 3 52 PI 4 51 PI 5 50 4 PG7_R_...

Page 333: ...1 8 470pF DISCAUDIO_CNTLR_1 C0477 LOCK_CNTLR_1 0 1uF C0591 R0529 47K C0495 470pF J0551 41 470pF C0492 RSSI MOSBIAS_3_CNTLR_1 470pF C0456 470pF NU NU C0455 R0467 10 J0501 7 J0551 9 470pF 470pF C0427 C0482 J0551 38 CSX 82pF C0428 J0451 18 8 CLK_CNTLR_2 J0451 7 470pF 470pF C0452 C0422 INT_SWB_CNTLR_1 NU 470pF CLK INT_SWB NU C0407 J0451 8 220 R0538 J0451 6 1 100K R0543 C0485 470pF C0478 470pF R0482 0 ...

Page 334: ...AS_2_CNTLR_1 J0551 42 470pF C0442 IN_5V_RF_REG_CNTLR_1 J0401 12 470pF C0485 J0451 12 33V VR0510 J0551 27 TEMPSENSE 9 470pF C0429 J0501 15 15K R0512 8 0 1uF C0592 R0407 5V 560 10 IN_5V_RF_REG R0531 J0551 12 J0501 8 CLK_CNTLR_2 2 J0451 18 8 L0482 J0451 7 NU 390nH 470pF C0494 C0516 01uF 100 J0551 15 R0408 470pF 7 C0511 J0551 29 4 7K R0539 J0551 39 R0510 4 7K J0551 13 470pF C0483 J0501 1 470pF 5V_CNTL...

Page 335: ... 4 9 J0551 3 J0551 10 470pF C0510 0 47uF C0541 J0551 40 10 R0592 J0451 5 J0501 14 3 J0551 20 R0525 100K PA_PWR_SET_1_CNTLR_1 J0551 25 220 R0538 VR0501 J0551 4 J0551 14 C0542 47uF R0533 J0551 23 0 J0551 18 R0511 100K CSX_CNTLR_1 J0551 37 NOISE_BLNKR_CNTLR_1 R0529 47K J0551 19 J0551 41 J0451 1 J0551 36 J0551 32 R0530 22K J0401 10 J0401 7 470pF RSSI_CNTLR_1 C0497 R0441 0 470pF NU 470pF C0575 DISCAUDI...

Page 336: ...0255 0 1uF C0241 TP0221 57R01 E0272 8 2K R0220 NU C0245 0 1uF 100 R0203 C0233 0 22uF NU 15K 1000pF R0276 7 VCC C0276 GND1 GND2 5 9 INV 8 M_SS 1 NINV 4 OUT1 6 OUT2 RR 3 TDA1519C U0271 2 10K R0261 0 1uF C0274 NU C0232 0 1uF R0227 1MEG NU 9 10 8 4 11 U0211 3 MC3403 5 0 1uF C0222 100K R0253 100pF C0253 NU 1uF C0252 7 C0291 10uF C0290 10uF NU R0207 2 2K R0226 1MEG 0 1uF NU 10uF C0227 C0292 10uF C0293 C...

Page 337: ...651 0 1uF R0643 0 1uF 1 2K C0651 C0655 NU 0 1uF 0 1uF C0645 470pF VR0601 NU C0621 4 VIN 5 VOUT 47uF C0622 U0641 LM2941 1 ADJ GND1 3 GND2 6 ON_OFF 2 Q0661 R0611 56K VR0671 NU Q0681 R0682 68K R0681 18K 57R01 E0631 470pF C0601 47uF C0661 R0642 7 5K 470pF C0641 C0644 33uF D0651 0 1uF J0601 2 C0681 C0612 0 1uF J0601 3 D0660 R0652 R0621 10 24K Q0641 MC33464N 45ATR U0653 NU 10uF 9V3 FLT_A IN_5V_RF_REG RE...

Page 338: ...V3 0 1uF C1114 36pF C1109 L1103 1 8uH R1110 100 FN0 NP 6 8pF C1120 C1113 0 1uF 390pF C1147 C1152 30pF FN0 NP 4 3K R1114 FL1101 CFEC10_7MG1 GND 2 IN 1 OUT 3 16K R1102 R1103 390 0 1uF C1105 L1107 5 6uH C1106 0 1uF C1104 0 1uF R1113 4 3K L1111 3 3uH GND7 11 GNDA 2 GNDB 3 INA 1 OUTB 4 IF 9V3_IF_2 GND1 5 6 GND2 7 GND3 GND4 BLUE RED 8 GND5 9 GND6 10 0 1uF C1144 FL1102 FILTER R1107 6 2K IF_IF_1 NOISE_BLN...

Page 339: ...02 2 U1102 1 MC74HC4066 13 CNTL 1 2 0 1uF C1142 3 2 1 DISCAUDIO_IF_1 R1115 455KHz 45B02 Y1102 R1122 12K C1131 10K C1141 FN0 NP 1 5pF C1124 0 1uF C1136 0 1uF 0 1uF C1133 039uF C1125 0 1uF QUADIN 10 RFIN 1 RFIN_DEC 2 RSSIOUT 5 RSSI_FEED 9 6 VCC IFAMP_DEC2 17 LIMIN 14 LIMOUT 11 LIM_DEC1 13 LIM_DEC2 12 20 MIXOUT OSCIN 4 OSCOUT 3 AUDIOOUT 8 AUDIO_FEED 7 GND 15 IFAMPIN 18 IFAMPOUT 16 IFAMP_DEC1 19 U1103...

Page 340: ... 91pF C1102 L1106 Q1102 D S C1110 62pF D S BLNKR_SWITCH FN0 NOTPLACED Q1103 Q1101 C1107 82pF 39pF C1116 9V3 C1114 0 1uF C1109 36pF R1110 1 8uH L1103 6 8pF FN0 NOTPLACED 100 C1120 0 1uF C1113 C1147 390pF FN0 NOTPLACED 30pF C1152 1 IN 3 OUT R1114 4 3K CFEC10_7MG1 FL1101 2 GND R1102 16K 390 R1103 C1105 0 1uF 330 R1109 120pF C1115 36pF C1112 3 3K R1108 R1135 62 47 R1111 18uH L1108 FN0 NOTPLACED BLNKR_...

Page 341: ...F FN0 NOTPLACED R1122 C1141 0 1uF C1131 C1124 0 1uF 0 1uF C1136 C1133 0 1uF C1125 039uF 4 OSCIN 3 OSCOUT 10 QUADI N 1 RFIN 2 RFIN_DEC 5 RSSIOUT 9 RSSI_FEED VCC 6 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP_DEC2 14 LIMIN 11 LIMOUT 13 LIM_DEC1 12 LIM_DEC2 MIXOUT 20 SA616 U1103 8 AUDIOOUT 7 AUDIO_FEED 15 GND 18 IFAMPIN CNTL 12 11 10 VDD 14 VSS 7 DISCAUDI O 5V_IF_1 MC74HC4066 U1102 4 R1129 10K C1139 01uF 680 R...

Page 342: ... TP1602 R1607 5 6K R1629 R1608 2 2K Q1604 C1605 10uF 0 22uF C1633 R1635 0 Q1610 D S 47uH L1601 C1603 0 22uF 1K R1614 510 Q1606 33pF R1636 C1629 2 VCC 2 7K R1637 5 AGCIN 7 GND 4 IN1 6 IN2 3 NC_GND 8 OUT1 1 OUT2 NOISE_BLNKR MC1350 U1601 1 2K Q1605 01uF R1620 R1611 1K C1634 NOISE_BLNKR_IF1_NOISE_BLNKR_1 C1602 220pF Q1601 220pF C1606 R1632 24K L1602 47uH R1615 1K C1622 0 1uF 10uF C1619 BLNKR_SWITCH_NO...

Page 343: ...la Part No Description C0460 NOT PLACED C0461 NOT PLACED C0462 NOT PLACED C0463 NOT PLACED C0464 NOT PLACED C0466 NOT PLACED C0467 NOT PLACED C0468 NOT PLACED C0470 2113743L09 CAP 470pF C0471 2113743N48 CAP 82pF C0472 2113743N48 CAP 82pF C0473 2113743N48 CAP 82pF C0474 2113743L09 CAP 470pF C0476 2113743L09 CAP 470pF C0477 2113743L09 CAP 470pF C0478 2113743L09 CAP 470pF C0482 2113743L09 CAP 470pF C...

Page 344: ...2 NOT PLACED C1233 NOT PLACED C1234 NOT PLACED C1250 2311049A09 CAPP 2 2uF C1251 2113743E20 CAP 0 1uF Circuit Ref Motorola Part No Description C1252 2113743E05 CAP 018uF C1253 2311049J11 CAPP 4 7uF C1254 2113741F49 CAP 01uF C1304 NOT PLACED C1305 NOT PLACED C1306 2113740L23 CAP 16pF C1307 2113740L34 CAP 47pF C1308 2113740F19 CAP 4 7pF C1309 NOT PLACED C1311 2113741F49 CAP 01uF C1312 2113741F49 CAP...

Page 345: ...ption D1601 4880154K03 MMBD353 E0271 2484657R01 FERRITE BEAD E0272 2484657R01 FERRITE BEAD E0631 2484657R01 FERRITE BEAD E1401 2408380X02 FERRITE BEAD E1403 2408380X02 FERRITE BEAD F0401 6580542Z01 FUSE FL1102 9180656U03 CFEC10_7MG1 FL1102 9180022M09 CRYSTAL FILTER 10 7MHZ FL1104 9180468V04 CFUCJ455F FL1105 9180468V05 CFUCJ455E FL1106 9180468V04 CFUCJ455F FL1107 9180468V05 CFUCJ455E J0401 0902636Y...

Page 346: ...0662057A82 RES 24K R0223 0662057A84 RES 30K R0224 0662057A71 RES 8 2K R0225 NOT PLACED R0226 NOT PLACED R0227 NOT PLACED Circuit Ref Motorola Part No Description R0228 0662057B47 RES 0 R0229 0662057A01 RES 10 R0241 0662057A89 RES 47K R0242 0662057B47 RES 0 R0251 0662057A89 RES 47K R0252 0662057A91 RES 56K R0253 0662057A97 RES 100K R0254 0662057A73 RES 10K R0255 0662057A73 RES 10K R0256 0662057A97 ...

Page 347: ... NOT PLACED R1447 0662057B47 RES 0 R1448 NOT PLACED R1449 0611079A64 RES 390 Circuit Ref Motorola Part No Description R1450 0683962T71 RES 820 R1451 0662057K31 RES 180 R1453 0662057K31 RES 180 R1454 0662057K31 RES 180 R1455 NOT PLACED R1457 0662057K01 RES 10 R1458 0611079A64 RES 390 R1459 0611079A64 RES 390 R1460 0680106R01 RES 0 1 R1463 0662057A75 RES 12K R1464 0662057A61 RES 3 3K R1465 0662057A6...

Page 348: ... U1377 4802245J50 UMC5N U1378 4802245J50 UMC5N U1401 5185130C65 LDMOS PREDRIVER IC U1402 5113818A03 MC33072 U1501 5185963A15 LM50 U1502 5109731C21 LM6142BIM U1503 5185765B28 POWER CONTOL IC U1601 5180929W01 MC1350 VR0151 4813830A15 MMBZ5232B VR0501 4805656W09 MMQA20VT1 VR0503 4805656W09 MMQA20VT1 VR0504 4813830A40 MMBZ5257B VR0505 4805656W09 MMQA20VT1 VR0509 4813830A40 MMBZ5257B VR0510 4813830A40 ...

Page 349: ...13743L09 470pF C0515 2113743L09 470pF C0516 2113741F49 10nF C0517 2113743N48 82pF C0518 2113743L09 470 PF C0541 2311049A05 470nF C0542 2311049A99 47uF C0591 2113743E20 100nF C0592 2113743E20 100nF C0593 2113741B69 100nF C0601 2113741F17 470pF C0603 2380090M24 10uF C0611 2311049C06 22uF C0612 2113743E20 100nF C0622 2311049A99 47uF C0641 2113741F17 470pF C0644 2311049A97 33uF C0645 2113743E20 100nF ...

Page 350: ...AP 01uF C1406 NOT PLACED Circuit Ref Motorola Part No Description C1407 2113741A45 CAP 01uF C1408 NOT PLACED C1409 NOT PLACED C1410 2113741M69 CAP 0 1uF C1412 2113741A45 CAP 01uF C1413 2113741A45 CAP 01uF C1414 2113741A45 CAP 01uF C1415 2113741M69 CAP 0 1uF C1416 NOT PLACED C1417 NOT PLACED C1418 2113740A73 CAP 560pF C1419 2113741A45 CAP 01uF C1420 2113741A45 CAP 01uF C1421 NOT PLACED C1422 NOT PL...

Page 351: ...0289M17 IDCTR 27uH L1207 NOT PLACED L1302 2408382D19 IDCTR 491nH L1303 2480289M17 IDCTR 27uH L1304 2462587N66 IDCTR 820nH L1305 2480289M17 IDCTR 27uH Circuit Ref Motorola Part No Description L1306 2480289M17 IDCTR 27uH L1307 2480289M17 IDCTR 27uH L1309 2480289M17 IDCTR 27uH L1310 2462587N60 IDCTR 390nH L1311 2480289M17 IDCTR 27uH L1313 2408382D19 IDCTR 491nH L1314 2480289M18 IDCTR 33uH L1315 24625...

Page 352: ...10K R1007 0662057A71 RES 8 2K R1008 0662057A65 RES 4 7K R1009 NOT PLACED R1010 NOT PLACED R1011 NOT PLACED R1101 0662057A18 RES 51 R1102 0662057A78 RES 16K R1103 0662057A39 RES 390 R1104 0662057A71 RES 8 2K R1106 0662057A25 RES 100 R1107 0662057A68 RES 6 2K R1108 0662057A61 RES 3 3K R1109 0662057A37 RES 330 R1110 0662057A25 RES 100 R1111 0662057A17 RES 47 R1113 0662057A64 RES 4 3K R1114 0662057A64...

Page 353: ...RES 10K R1523 NOT PLACED R1524 0662057C71 RES 680 R1525 NOT PLACED R1526 0662057A97 RES 100K R1527 0662057A97 RES 100K R1528 0662057A80 RES 20K R1532 0662057A95 RES 82K R1533 0662057A73 RES 10K R1535 0662057R16 RES 39 2 R1539 0662057A53 RES 1 5K R1540 0662057A53 RES 1 5K R1542 0662057A49 RES 1K R1543 0662057A49 RES 1K R1544 0662057A90 RES 51K R1545 0662057A65 RES 4 7K R1601 0662057A73 RES 10K R160...

Page 354: ...470pF C0488 2113743L09 CAP 470pF Circuit Ref Motorola Part No Description C0490 2113743L09 CAP 470pF C0491 2113743L09 CAP 470pF C0492 2113743L09 CAP 470pF C0493 2113743L09 CAP 470pF C0494 2113743L09 CAP 470pF C0495 2113743L09 CAP 470pF C0496 2113743L09 CAP 470pF C0497 2113743L09 CAP 470pF C0499 2113743L09 CAP 470pF C0501 2113741F49 CAP 01uF C0502 2113741F17 CAP 470pF C0503 2113741F17 CAP 470pF C05...

Page 355: ... C1320 2113741F49 CAP 01uF C1321 2113740F17 CAP 3 9pF C1323 2113740L21 CAP 13pF Circuit Ref Motorola Part No Description C1325 2113741F49 CAP 01uF C1326 2113741F49 CAP 01uF C1333 2113740L26 CAP 22pF C1334 2113740L31 CAP 36pF C1335 2113740F19 CAP 4 7pF C1336 2133743E20 CAP 0 1uF C1337 NOT PLACED C1338 2113741F49 CAP 01uF C1339 2113741F49 CAP 01uF C1340 2113741F49 CAP 01uF C1341 2113740L31 CAP 36pF ...

Page 356: ...905505Y04 CONN ZIF J0552 0905505Y03 CONN 18 PIN Circuit Ref Motorola Part No Description J0601 0986105B01 DC POWER CONNECTOR J1401 0986166B02 MINI U ANTENNA CONN L0481 NOT PLACED L0482 NOT PLACED L1001 2408382A11 IDCTR 130nH L1002 2408382C11 IDCTR 130nH L1003 2408382A11 IDCTR 130nH L1004 2408382C11 IDCTR 130nH L1005 2408382A11 IDCTR 130nH L1006 2408382A11 IDCTR 130nH L1007 2408382C11 IDCTR 130nH L...

Page 357: ...057B08 RES 270K R0265 0662057A82 RES 24K R0266 NOT PLACED R0267 0662057A89 RES 47K R0268 0662057A73 RES 10K Circuit Ref Motorola Part No Description R0269 0662057A41 RES 470 R0273 0662057A82 RES 24K R0274 NOT PLACED R0275 0662057A73 RES 10K R0276 0662057A77 RES 15K R0401 0662057A33 RES 220 R0407 0662057M26 RES 10 R0408 0662057A25 RES 100 R0409 0662057M26 RES 10 R0412 0662057B47 RES 0 R0441 0662057...

Page 358: ...7A61 RES 3 3K R1466 NOT PLACED R1467 NOT PLACED R1468 NOT PLACED Circuit Ref Motorola Part No Description R1469 0662057C01 RES 0 R1470 NOT PLACED R1471 NOT PLACED R1472 0662057A73 RES 10K R1473 0680194M01 RES 10 R1474 0680194M01 RES 10 R1475 0680194M01 RES 10 R1476 0680194M01 RES 10 R1477 0662057A61 RES 3 3K R1478 0662057A73 RES 10K R1479 0662057A61 RES 3 3K R1480 0662057D10 RES 27K R1481 0662057A...

Page 359: ...OL IC U1601 5180929W01 MC1350 VR0151 4813830A15 MMBZ5232B VR0501 4805656W09 MMQA20VT1 VR0503 4805656W09 MMQA20VT1 VR0504 4813830A40 MMBZ5257B VR0505 4805656W09 MMQA20VT1 VR0509 4813830A40 MMBZ5257B VR0510 4813830A40 MMBZ5257B VR0537 4813830A15 MMBZ5232B VR0541 4813830A27 MMBZ5244B VR0601 4813832C77 TRANSIENT SUPPRESSOR VR0621 4813830A15 MMBZ5232B VR0671 NOT PLACED Y0131 4880113R19 CRYSTAL 38 4KHZ ...

Page 360: ...470pF C0471 2113743N48 CAP 82pF C0472 2113743N48 CAP 82pF C0473 2113743N48 CAP 82pF C0474 2113743L09 CAP 470pF C0476 2113743L09 CAP 470pF C0477 2113743L09 CAP 470pF C0478 2113743L09 CAP 470pF C0482 2113743L09 CAP 470pF C0483 2113743L09 CAP 470pF C0484 2113741F17 CAP 470pF C0485 2113743L09 CAP 470pF C0486 2113743L09 CAP 470pF C0487 2113743L09 CAP 470pF C0488 2113743L09 CAP 470pF C0490 2113743L09 CA...

Page 361: ...aced C1306 2113740L23 CAP 16pF C1307 2113740L34 CAP 47pF C1308 2113740F19 CAP 4 7pF Circuit Ref Motorola Part No Description C1309 Not Placed C1311 2113741F49 CAP 01uF C1312 2113741F49 CAP 01uF C1313 2113741F49 CAP 01uF C1314 2113740L35 CAP 51pF C1315 2113740L35 CAP 51pF C1316 2113740F15 CAP 3 3pF C1317 2113743E20 CAP 0 1uF C1318 2113741F49 CAP 01uF C1319 2113741F49 CAP 01uF C1320 2113741F49 CAP 0...

Page 362: ... Circuit Ref Motorola Part No Description FL1101 9180656U03 CFEC10_7MG1 FL1102 9180022M09 CRYSTAL FILTER 10 7 MHz FL1104 9180468V04 CFUCJ455F FL1105 9180468V05 CFUCJ455E FL1106 9180469V04 CFWC455F FL1107 9180469V05 CFWC455E J0401 0902636Y02 CONN 12 PIN CONTROL HEAD J0451 0902636Y01 CONN 18 PIN EXPANSION BOARD J0501 0986105B01 CONN 20 PIN ACCESSORY J0551 0905505Y04 CONN 40 PIN INTERNAL OPTION J0552...

Page 363: ...21 0662057A82 RES 24K R0222 0662057A82 RES 24K R0223 0662057A84 RES 30K R0224 0662057A71 RES 8 2K R0225 Not Placed R0226 Not Placed R0227 Not Placed Circuit Ref Motorola Part No Description R0228 0662057B47 RES 0 R0229 0662057A01 RES 10 R0241 0662057A89 RES 47K R0242 0662057B47 RES 0 R0251 0662057A89 RES 47K R0252 0662057A91 RES 56K R0253 0662057A97 RES 100K R0254 0662057A73 RES 10K R0255 0662057A...

Page 364: ...0194M01 RES 10 R1414 0680194M01 RES 10 R1415 Not Placed R1416 0680194M01 RES 10 Circuit Ref Motorola Part No Description R1417 0680194M01 RES 10 R1418 0680194M01 RES 10 R1419 0680194M01 RES 10 R1420 0680194M01 RES 10 R1421 0680194M01 RES 10 R1422 0680194M01 RES 10 R1423 0680194M01 RES 10 R1424 0662057D10 RES 27K R1425 0662057D10 RES 27K R1440 0662057A25 RES 100 R1441 Not Placed R1442 0662057A25 RE...

Page 365: ...51 5113816A07 MC78M05 U0652 5113815A02 MC33064 U0653 Not Placed U1001 4809939C05 UMC5N U1051 5108278X01 MIXER U1101 5102463J52 MC74HC4066 U1102 5102463J52 MC74HC4066 U1103 5186144B01 SA616 U1201 5185963A27 FRACN SYNTHESIZER IC U1250 5185963A33 LP2951 U1377 4809939C05 UMC5N U1378 4809939C05 UMC5N U1401 5185130C65 LDMOS PREDRIVER IC U1402 5113818A03 MC33072 U1501 5185963A15 LM50 U1502 5109731C21 LM6...

Page 366: ...70pF C0471 2113743N48 CAP 82pF C0472 2113743N48 CAP 82pF C0473 2113743N48 CAP 82pF C0474 2113743L09 CAP 470pF C0476 2113743L09 CAP 470pF C0477 2113743L09 CAP 470pF C0478 2113743L09 CAP 470pF C0482 2113743L09 CAP 470pF C0483 2113743L09 CAP 470pF C0484 2113741F17 CAP 470pF C0485 2113743L09 CAP 470pF C0486 2113743L09 CAP 470pF C0487 2113743L09 CAP 470pF C0488 2113743L09 CAP 470pF C0490 2113743L09 CAP...

Page 367: ...7 2113740L27 CAP 24pF C1308 2113740F19 CAP 4 7pF C1309 Not Placed C1311 2113741F49 CAP 01uF Circuit Ref Motorola Part No Description C1312 2113741F49 CAP 01uF C1313 2113741F49 CAP 01uF C1314 2113740L27 CAP 24pF C1315 2113740L27 CAP 24pF C1316 2113740F15 CAP 3 3pF C1317 2113743E20 CAP 0 1uF C1318 2113741F49 CAP 01uF C1319 2113741F49 CAP 01uF C1320 2113741F49 CAP 01uF C1321 2113740F17 CAP 3 9pF C132...

Page 368: ...M09 CRYSTAL FILTER 10 7 MHZ Circuit Ref Motorola Part No Description FL1104 9180468V04 CFUCJ455F FL1105 9180468V05 CFUCJ455E FL1106 9180469V04 CFWC455F FL1107 9180469V05 CFWC455E J0401 0902636Y02 CONN 12 PIN CONTROL HEAD J0451 0902636Y01 CONN 18 PIN EXPANSION BOARD J0501 0986105B01 CONN 20 PIN ACCESSORY J0551 0905505Y04 CONN 40 PIN INTERNAL OPTION J0552 0905505Y03 CONN 18 PIN RS232 J0601 0986165B0...

Page 369: ...662057A71 RES 8 2K R0225 Not Placed R0226 Not Placed R0227 Not Placed R0228 0662057B47 RES 0 R0229 0662057A01 RES 10 R0241 0662057A89 RES 47K Circuit Ref Motorola Part No Description R0242 0662057B47 RES 0 R0251 0662057A89 RES 47K R0252 0662057A91 RES 56K R0253 0662057A97 RES 100K R0254 0662057A73 RES 10K R0255 0662057A73 RES 10K R0256 0662057A97 RES 100K R0257 0662057A57 RES 2 2K R0261 0662057A73...

Page 370: ...1 RES 10 R1417 0680194M01 RES 10 R1418 0680194M01 RES 10 R1419 0680194M01 RES 10 Circuit Ref Motorola Part No Description R1420 0680194M01 RES 10 R1421 0680194M01 RES 10 R1422 0680194M01 RES 10 R1423 0680194M01 RES 10 R1424 0662057D10 RES 27K R1425 0662057D10 RES 27K R1440 0662057A25 RES 100 R1441 Not Placed R1442 0662057B47 RES 0 R1443 0662057A49 RES 1K R1444 0662057A33 RES 220 R1445 0662057A68 R...

Page 371: ...653 Not Placed U1001 4809939C05 UMC5N U1051 5108278X01 MIXER U1101 5102463J52 MC74HC4066 U1102 5102463J52 MC74HC4066 U1103 5186144B01 SA616 U1201 5185963A27 FRACN SYNTHESIZER IC U1250 5185963A33 LP2951 U1377 4809939C05 UMC5N U1378 4809939C05 UMC5N U1401 5185130C65 LDMOS PREDRIVER IC U1402 5113818A03 MC33072 U1501 5185963A15 LM50 U1502 5109731C21 LM6142BIM U1503 5185765B26 POWER CONTROL IC U1601 51...

Page 372: ...2113743L09 CAP 470pF C0471 2113743N48 CAP 82pF C0472 2113743N48 CAP 82pF C0473 2113743N48 CAP 82pF C0474 2113743L09 CAP 470pF C0476 2113743L09 CAP 470pF C0477 2113743L09 CAP 470pF C0478 2113743L09 CAP 470pF C0482 2113743L09 CAP 470pF C0483 2113743L09 CAP 470pF C0484 2113741F17 CAP 470pF C0485 2113743L09 CAP 470pF C0486 2113743L09 CAP 470pF C0487 2113743L09 CAP 470pF C0488 2113743L09 CAP 470pF C049...

Page 373: ...d C1311 2113741F49 CAP 01uF C1312 2113741F49 CAP 01uF C1313 2113741F49 CAP 01uF Circuit Ref Motorola Part No Description C1314 2113740L21 CAP 13pF C1315 2113740L21 CAP 13pF C1316 2113740F15 CAP 3 3pF C1317 2113743E20 CAP 0 1uF C1318 2113741F49 CAP 01uF C1319 2113741F49 CAP 01uF C1320 2113741F49 CAP 01uF C1321 2113740F17 CAP 3 9pF C1323 2113740L21 CAP 13pF C1325 2113741F49 CAP 01uF C1326 2113741F49...

Page 374: ...R 10 7 MHZ FL1104 9180468V04 CFUCJ455F Circuit Ref Motorola Part No Description FL1105 9180468V05 CFUCJ455E FL1106 9180469V04 CFWC455F FL1107 9180469V05 CFWC455E J0401 0902636Y02 CONN 12 PIN CONTROL HEAD J0451 0902636Y01 CONN 18 PIN EXPANSION BOARD J0501 0986105B01 CONN 20 PIN ACCESSORY J0551 0905505Y04 CONN 40 PIN INTERNAL OPTION J0552 0905505Y03 CONN 18 PIN RS232 J0601 0986165B01 DC POWER CONNEC...

Page 375: ...662057A71 RES 8 2K R0225 Not Placed R0226 Not Placed R0227 Not Placed R0228 0662057B47 RES 0 R0229 0662057A01 RES 10 R0241 0662057A89 RES 47K Circuit Ref Motorola Part No Description R0242 0662057B47 RES 0 R0251 0662057A89 RES 47K R0252 0662057A91 RES 56K R0253 0662057A97 RES 100K R0254 0662057A73 RES 10K R0255 0662057A73 RES 10K R0256 0662057A97 RES 100K R0257 0662057A57 RES 2 2K R0261 0662057A73...

Page 376: ...RES 10 R1417 0680194M01 RES 10 R1418 0680194M01 RES 10 R1419 0680194M01 RES 10 Circuit Ref Motorola Part No Description R1420 0680194M01 RES 10 R1421 0680194M01 RES 10 R1422 0680194M01 RES 10 R1423 0680194M01 RES 10 R1424 0662057D10 RES 27K R1425 0662057D10 RES 27K R1440 0662057A25 RES 100 R1441 Not Placed R1442 0662057A25 RES 100 R1443 0662057A49 RES 1K R1444 0662057A33 RES 220 R1445 0662057A68 R...

Page 377: ...653 Not Placed U1001 4809939C05 UMC5N U1051 5108278X01 MIXER U1101 5102463J52 MC74HC4066 U1102 5102463J52 MC74HC4066 U1103 5186144B01 SA616 U1201 5185963A27 FRACN SYNTHESIZER IC U1250 5185963A33 LP2951 U1377 4809939C05 UMC5N U1378 4809939C05 UMC5N U1401 5185130C65 POWER CONTROL IC U1402 5113818A03 MC33072 U1501 5185963A15 LM50 U1502 5109731C21 LM6142BIM U1503 5185765B26 LDMOS PREDRIVER IC U1601 51...

Page 378: ...4 78 Low Band PCBs Schematics Parts Lists THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 379: ...GM338 Mobile Radios VHF 45W Bipolar 136 174MHz Service Information Issue December 2003 ...

Page 380: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 381: ...tter Power Amplifier PA 45 W 2 3 3 1 Power Controlled Stage 2 4 3 2 Pre Driver Stage 2 4 3 3 Driver Stage 2 4 3 4 Final Stage 2 4 3 5 Directional Coupler 2 4 3 6 Antenna Switch 2 5 3 7 Harmonic Filter 2 5 3 8 Power Control 2 5 4 0 Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 6 4 3 Voltage Controlled Oscillator VCO 2 7 4 4 Synthesizer Operation 2 8 Section 3 T...

Page 382: ...chematics Parts List 4 3 VHF 136 174 MHz 25 45W 8486140B13 Top Side 4 3 VHF 136 174 MHz 25 45W 8486140B13 Bottom Side 4 4 VHF 136 174 MHz Power Amplifier 25 45W 4 5 VHF 136 174 MHz FRACN 4 6 VHF 136 174 MHz Voltage Controlled Oscillator 4 7 VHF 136 174 MHz Receiver Front End 4 8 VHF 136 174 MHz IF 4 9 VHF PCB 8486140B13 Parts List 25 45W 4 10 ...

Page 383: ...0 8 162 MHz 1 4 Wave Roof Mount X RAD4201_ BNC 162 174 MHz 1 4 Wave Roof Mount X RAD4202_ BNC 146 172 MHz 3dB Gain Roof Mount X 6804112J06 GM338 User Guide x Indicates one of each is required General Specifications Channel Capacity GM338 128 Power Supply 13 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 198mm 25 45W add 9mm for Volume Knob Weight GM338 1400 g ...

Page 384: ... dB 25 kHz Audio Response 300 3000Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver VHF Frequencies Full Bandsplit VHF 136 174 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 75 dB 20 kHz 80 dB 25 kHz Spurious Rejection ETS 75 dB 12 5 kHz 80 dB 20 25 kHz Rat...

Page 385: ...e amplifier first mixer 1st IF 2nd IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz High side injection is used Figure 2 1 VHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack Con...

Page 386: ...2 and adjusts the base current of Q3001 as necessary to maintain its collector current constant at approximately 15 20 mA Operating voltage is from the regulated 9 3V supply 9V3 During transmit 9 1 volts K9V1 turns off both transistors Q3002 and Q3001 This protects the RF pre amplifier from excessive dissipation during transmit mode A following 3dB pad R3006 R3008 and R3016 R3018 stabilizes the ou...

Page 387: ...21 pin 2 part of the Controller circuits A received signal strength indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the µP U0101 pin 63 and in addition is available at accessory connector J0501 15 3 0 Transmitter Power Amplifier PA 45 W The radio s 45 W PA is a four stage amplifier used to amplify the output from the VCOBIC to the...

Page 388: ...FIC and fed to the gate of Q3431 via the resistive network R3404 R3406 and R3431 5 This bias voltage is also tuned in the factory If the transistor is replaced the bias voltage must be tuned using the Customer Programming Software CPS Care must be taken not to damage the device by exceeding the maximum allowed bias voltage The device s drain current is drawn directly from the radio s dc supply vol...

Page 389: ...ed by the directional coupler rectified and summed to provide a dc voltage to the RFIN port of the PCIC pin 1 which is proportional to the sampled RF power The ASFIC contains a digital to analog converter DAC which provides a reference voltage of the control loop to the PCIC via R3517 The reference voltage level is programmable through the SPI line of the PCIC This reference voltage is proportiona...

Page 390: ...d Y3261 D3261 C3261 C3262 and R3262 are not used and C3263 is increased to 0 1 uF 4 2 Fractional N Synthesizer The LVFRAC N synthesizer IC U3201 consists of a pre scaler a programmable loop divider control divider logic a phase detector a charge pump an A D converter for low frequency digital modulation a balance attenuator to balance the high frequency analog modulation and low frequency digital ...

Page 391: ...icates a stable loop IC U3201 provides the 16 8 MHz reference frequency at pin 19 The serial interface SRL is connected to the µP via the data line DATA U3201 7 clock line CLK U3201 8 and chip enable line CSX U3201 9 4 3 Voltage Controlled Oscillator VCO The Voltage Controlled Oscillator VCO consists of the VCO Buffer IC VCOBIC U3301 the TX and RX tank circuits the external RX buffer stages and th...

Page 392: ...r is connected to the phase detector which compares the loop divider s output signal with the reference signal The reference signal is generated by dividing down the signal of reference oscillator Y3261 or Y3262 The output signal of the phase detector is a pulsed dc signal which is routed to the charge pump The charge pump outputs a current at U3201 pin 43 IOUT The loop filter which consists of R3...

Page 393: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 394: ... at R3019 Inject RF into J3401 Is tuning voltage OK No Yes Check RF amp Q3001 Stage Check filter between C3012 T3001 Yes Check T3001 T3002 D3031 R3030 R3034 L3032 C3034 and C3035 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3035 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present ...

Page 395: ...TP3402 and U3501 Pin 4 Short TP3403 to Ground NO YES Voltage at TP3402 ris es Check PA Stages NO YES PCIC U3501 Pin 15 9 3V DC Check 9 3 V Regulator U0641 NO YES PCIC U3501 Pin 16 4V DC Replace PCIC U3501 NO YES TP3404 9 1V DC If U3201 Pin 3 is high replace PCIC U3501 otherwise check controller and FGU YES NO TP3403 0 5V DC Replace PCIC U3501 Check Forward Reverse Power Sense Circuitry D3451 D3452...

Page 396: ...3401 Replace Q3421 NO 0V 1 4V Bias 2 DC Voltage at TP3407 YES RF Voltage at TP3401 100mV YES RF Voltage U3401 Pin 6 3V Replace Q3421 Supply Replace Q3431 Check FGU U3301 NO Check Components between TP3401 C3417 NO YES ASFIC U0221 Pin 6 1 4V DC Check Bias Tuning be fore replacing ASFIC U0221 Check Components between ASFIC and Q3431 before re placing Q3431 YES RF Voltage Q3421 Gate 1V NO Check Compo...

Page 397: ...move Shorts Is there a short between Pin 47 and Pins 14 15 of U3201 Replace or resolder necessary components Is RF level at U3201 Pin 32 12 x 25 dBm Are R3221 R3222 R3223 C3221 C3222 C3224 OK Replace U3201 If R3227 C3226 C3227 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U3201 toggle when channel is changed Check programming lines between U0101 ...

Page 398: ...eplace R3364 NO NO YES YES If R3402 and C3315 are OK replace U3301 TX VCO RX VCO Correct Problem Visual check of board OK Make sure U3211 is working correctly and runner between U3211 Pin 1 and U3301 Pin 14 18 is OK Check runner between U3201 Pin 2 and U3301 Pin 19 Is RF available If all parts from U3301 Pin 8 to Base of Q3301 are OK replace U3301 If all parts associated with the pins are OK repla...

Page 399: ... the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and VHF circuit components The VHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 VHF 25 45W Diagrams and Parts Lists PCB 8486140B13 Main Board Top Side 8486140B13 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 25 45W FR...

Page 400: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 401: ...4 D3031 D3221 D3341 D3361 D3362 D3471 D3472 2 3 4 5 6 FL3101 2 3 4 5 6 FL3102 4 3 2 FL3112 FL3114 18 1 J0451 20 11 10 J0501 J0601 2 3 J3401 L0481 L0482 L3002 L3031 L3032 L3034 L3100 L3101 L3124 L3201 L3232 L3333 L3341 L3343 L3344 L3346 L3361 L3362 L3363 L3364 L3401 L3403 L3411 L3412 L3413 L3414 L3421 L3422 L3431 L3432 L3433 L3443 L3444 L3471 L3472 L3474 L3477 Q0110 Q0177 Q0181 Q0185 Q0681 Q3001 Q3...

Page 402: ...3 Q3303 6 5 4 3 2 1 Q3431 6 5 4 3 2 1 Q3441 Q3472 Q3473 R0107 R0111 R0112 R0113 R0117 R0121 R0151 R0152 R0171 R0172 R0173 R0174 R0175 R0176 R0177 R0178 R0179 R0183 R0184 R0201 R0202 R0203 R0204 R0205 R0206 R0207 R0208 R0265 R0266 R0267 R0273 R0274 R0275 R0276 R0323 R0324 R0331 R0332 R0333 R0335 R0341 R0342 R0343 R0344 R0345 R0346 R0347 R0401 R0407 R0408 R0409 R0412 R0441 R0467 R0468 R0481 R0482 R0...

Page 403: ... VR3471 R3473 C3402 51 TEMPSENSE K9V1_VHF_PA_1 CSX_VHF_PA_1 CNTLVLTG_VHF_PA_1 R3413 3 3K 51nH L3493 TP3404 L3492 51nH C3410 022uF R3506 680 68 R3424 C3408 18pF C3413 022uF 022uF C3415 FECNTL_2 Q3502 D3455 FECNTL_1 R3471 NU 470 2200pF C3428 C3426 2200pF C3425 1uF 100 R3416 R3415 100 82pF C3420 20 R3419 82pF C3441 C3432 C3506 2200pF 1000pF L3432 36 54nH 1K R3503 C3418 24pF C3417 2200pF 1000pF L3423 ...

Page 404: ..._VHF_FN_1 0 1uF C3209 C3246 220pF NU C3206 10uF 5V_VHF_FN_2 150K R3206 Q3221 R3251 180K 01uF C3228 0 1uF C3235 2 2uF C3210 VCTRL_VHF_FN_1 R3204 LOCK_VHF_FN_1 47 1uF C3223 NU 220pF R3262 NU C3245 BWSELECT 6 2K C3215 R3224 47K C3213 2 2uF 1 GND 5 IN 2 NR 4 OUT 3 SD 2 2uF VCC 4 VCNTL 1 ADP3300 U3211 6 ERR Y3263 TTS05V 16 8MHz GND 2 OUT 3 MODIN VCTRL C3255 DATA_VHF_FN_1 220pF C3242 2 2uF 5V_VHF_FN_1 0...

Page 405: ...11 10K R3317 22 R3318 NU L3344 1uH C3362 5 6pF 100nH L3332 22 R3306 0 R3316 NU 18nH L3301 C3344 1 8pF Q3301 L3318 100nH C3311 022uF 6 8pF C3314 C3315 01uF C3303 15pF 20K R3351 Q3304 BFQ67W NU 47K R3319 3 3pF C3316 56nH L3361 0 R3308 TRB_VHF_VCO_1 1uH L3364 C3351 01uF 12K R3352 PRESC VCOMOD VCOBIAS_1_VHF_VCO_1 R3323 1K VCTRL C3347 01uF C3337 0 1uF NU R3307 220 D3341 VCOBIAS_1 RXINJ_VHF_VCO_1 100K R...

Page 406: ...032 C3035 C3024 NU 820 NU 3300pF NU R3023 0 C3005 NU 4 7pF C3018 100pF C3030 1000pF NU 330pF C3023 C3027 01uF R3028 390 560nH L3031 56pF C3004 SP_1_2 R3012 1K NU 33nH L3034 Q3021 NU 0 R3035 1 5K R3004 0 R3033 3300pF C3007 330pF C3029 K9V1 390 R3024 NU 01uF C3028 10K 1K R3036 R3006 R3026 NU SP_2_2 10K R3014 SP_2_1 51 C3015 C3002 9 1pF 56pF 82pF C3034 NU 18pF C3031 IO3 IO4 5 1pF C3033 D3031 IO1 IO2 ...

Page 407: ...K R3142 R3154 10K C3122 039uF Q3101 6 VCC 330 R3113 20 MIXOUT 4 OSCIN 3 OSCOUT 10 QUADIN 1 RFIN 2 RFIN_DEC 5 RSSIOUT 9 RSSI_FEED 15 18 IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP _DEC2 14 LIMIN 11 LIMOUT 13 LIM_DEC1 12 LIM_DEC2 SA616 U3101 8 AUDIOOUT 7 AUDIO_FEED GND 51 44 395MHz 12R17 Y3101 2 GND 4 GND1 3 OUT 1 IN R3130 C3136 30pF C3135 33pF 12K R3101 R3147 12K C3133 10uF C3115 100 R3105 22pF 620n...

Page 408: ...2113741F49 10nF 50V C3306 2113740F20 5 1pF 5 50V C3311 2113743E07 22nF 16V C3314 2113740F23 6 8pF 5 50V Circuit Ref Motorola Part No Description C3315 2113740F31 15pF 5 50V C3316 2113740F15 3 3pF 5 50V C3317 2113740F39 33pF 5 50V C3318 2113740F21 5 6pF 5 50V C3319 2113741F25 1nF 50V C3324 2113741F49 10nF 50V C3332 2113743E20 100nF 16V C3333 2113743E20 100nF 16V C3334 2113743E07 22nF 16V C3335 2113...

Page 409: ... DUAL ROHM FMC2 Q3101 4813827A07 NPN SML SIG MMBR9 Q3102 4813827A07 NPN SML SIG MMBR9 Q3141 4813824A10 NPN 40V 2A B 50 150 Q3151 4880048M01 NPN DIG 47k 47k Q3152 4880048M01 NPN DIG 47k 47k Q3221 4880048M01 NPN DIG 47k 47k Q3301 4813827A07 NPN SML SIG MMBR9 Circuit Ref Motorola Part No Description Q3303 4802245J50 DUAL NPN PNP UMC5N Q3304 4805218N63 RF TRANS SOT 323 BFQ67W Q3421 5105385Y91 LDMOS PW...

Page 410: ...10W 5 R3461 0680194M20 62 1W 5 R3462 0662057A87 39k 1 16W 5 R3463 0662057D04 15kK 1 10W 5 R3464 0662057C01 0 1 10W 5 R3465 0662057B06 220k 1 16W R3471 0662057A41 470 1 16W 5 R3473 0680194M18 51 1W 5 R3474 0680194M18 51 1W 5 R3475 0662057A73 10k 1 16W 5 R3490 0662057A89 47k 1 16W 5 R3501 0662057A69 6k8 1 16W 5 R3502 0662057A87 39k 1 16W 5 R3503 0662057A49 1k 1 16W 5 R3504 0662057A49 1k 1 16W 5 R350...

Page 411: ...GM338 Mobile Radios UHF1 40W Bipolar 403 470MHz Service Information Issue December 2003 ...

Page 412: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 413: ...er Power Amplifier PA 40 W 2 3 3 1 Power Controlled Stage 2 4 3 2 Pre Driver Stage 2 4 3 3 Driver Stage 2 4 3 4 Final Stage 2 4 3 5 Bi Directional Coupler 2 5 3 6 Antenna Switch 2 5 3 7 Harmonic Filter 2 5 3 8 Power Control 2 5 4 0 Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 7 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Operation 2 9 Section 3 ...

Page 414: ...Schematics Parts List 4 3 UHF 403 470 MHz 25 40W 8480643Z06 Top Side 4 3 UHF 403 470 MHz 25 40W 8480643Z06 Bottom Side 4 4 UHF 403 470 MHz Power Amplifier 25 40W 4 5 UHF 403 470 MHz FRACN 4 6 UHF 403 470 MHz Voltage Controlled Oscillator 4 7 UHF 403 470 MHz Receiver Front End 4 8 UHF 403 470 MHz IF 4 9 UHF PCB 8480643Z06 Parts List 25 40W 4 10 ...

Page 415: ...53_ BNC 450 470 MHz 3 5dB Gain Roof Mount X RAE4154_ BNC 450 470 MHz 5dB Gain Roof Mount X RAE4158_ BNC 406 420 MHz 3 5dB Gain Roof Mount X 6804112J06 GM338 User Guide x Indicates one of each is required General Specifications Channel Capacity GM338 128 Power Supply 13 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 198mm 25 40W add 9mm for Volume Knob Weight G...

Page 416: ... dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 403 470 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious Rejection ETS 70 dB 12 5 kHz 75 dB 20 25 kHz Ra...

Page 417: ...irst mixer 1st IF 2nd IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the 1st IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack Control Volta...

Page 418: ... 9 3 volt supply via L4003 and R4002 A 3dB pad R4006 R4007 R4011 and R4008 R4010 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal The varactor diodes D4004 and D4005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A following 1 dB pad R4013 R4015 sta...

Page 419: ...from U3103 pin 8 DISCAUDIO which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuits A received signal strength indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the µP U0101 pin 63 and is available at accessory connector J0501 15 3 0 Transmitter Power Amplifier PA 40 W The radio s 40W power amplifier PA is a four st...

Page 420: ... R4408 R4416 and R4415 The bias voltage is tuned in the factory 3 3 Driver Stage The following stage is an enhancement mode N Channel MOSFET device Q4431 providing a gain of 10dB This device also requires a positive gate bias and a quiescent current flow for proper operation The voltage of the line Bias_2_UHF_PA_1 is set in transmit mode by the ASFIC and fed to the gate of Q4431 via the resistive ...

Page 421: ... the voltage at the resistor R4511 never exceeds 5 6V 3 7 Harmonic Filter Inductors L4491 L4492 L4493 and capacitors C4448 C4493 C4494 C4496 and C4498 form a low pass filter to attenuate harmonic energy from the transmitter R4491 is used to drain any electrostatic charges that might otherwise build up on the antenna The harmonic filter also prevents high level RF signals above the receiver passban...

Page 422: ...he set threshold in the PCIC the transmitter output power is reduced so as to reduce the transmitter temperature 4 0 Frequency Synthesis The synthesizer subsystem consists of the reference oscillator Y4261 or Y4262 the low voltage fractional N synthesizer LVFRAC N U4201 and the Voltage Controlled Oscillator VCO 4 1 Reference Oscillator The reference oscillator Y4262 contains a temperature compensa...

Page 423: ...y D4201 C4202 C4203 This voltage multiplier is basically a diode capacitor network driven by two signals 1 05MHz 180 degrees out of phase U4201 14 and 15 Figure 2 3 UHF Synthesizer Block Diagram Output LOCK U4201 4 provides information about the lock status of the synthesizer loop A high level at this output indicates a stable loop IC U4201 provides the 16 8 MHz reference frequency at pin 19 The s...

Page 424: ...The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit an external transistor Q4301 is used in conjunction with the internal transistor for better side band noise Figure 2 4 UHF VCO Block Diagram The external RX buffers Q4332 are enabled by a high at U4201 pin 3 AUX4 via transistor switch Q4333 In TX mode the modulation signal VCOMOD from the LVFRAC N synthesi...

Page 425: ...CO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U4201 40 or BIAS 2 U4201 39 The currents are set by the value of R4251 or R4252 respectively The selection of the three different bias sources is done by software programming To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer the magni...

Page 426: ...2 10 Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 427: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 428: ...age at R4060 Inject RF into J4401 Is tuning voltage OK No Yes Check RF amp Q4003 Stage Check filter between C4015 T4051 Yes Check T4051 T4052 D4051 R4052 L4008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltag...

Page 429: ...C_MOSBIAS_1 No No Change Q4573 START No power Is Vctrl there Is Q4573 OK Check voltage on pin 4 U4501 Check voltage on pin 5 U4501 Check R4422 5 and go back to top Troubleshoot ASFIC Check voltage on TP4531 Change PCIC Check R4409 R4473 and go back to top Check MOSBIAS_2 Check ASFIC Are D4471 D4472 OK Change D4471 D4472 No No No No No Yes Yes Yes Yes Yes Yes Yes Yes No No Check PCIC Yes Change Q44...

Page 430: ...e U4201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U4201 Replace or resolder necessary components Is RF level at U4201 Pin 32 12 x 25 dBm Are R4221 R4222 R4223 C4221 C4222 C4223 OK Replace U4201 If L4225 C4229 C4227 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U4201 toggle when channel is changed Check programming lines betw...

Page 431: ...21 and R4321 are OK then replace CR4321 Replace C4322 Replace C4325 NO NO YES YES If parts between R4402 U4301 Pin10 are OK replace U4301 TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U4201 Pin 2 and U4301 Pin 19 Is RF available If all parts from U4301 Pin 8 to Base of Q4332 are OK replace U4301 If all parts associated with the pins are OK replace Q4332 If all parts f...

Page 432: ...3 6 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 433: ... the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components The UHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF 25 40W Diagrams and Parts Lists PCB 8480643Z06 Main Board Top Side 8480643Z06 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 25 40W FR...

Page 434: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 435: ...R4223 R4263 3 2 J4401 C4444 C4459 C4465 C4466 C4491 C4507 C4521 C4522 R4501 R4502 U4502 C4423 C4432 C4435 C 4 4 4 9 C 4 4 5 0 C4460 C4478 C4490 C4497 C4520 D4403 R4607 C4420 C4481 C4485 C4489 C4495 C4602 R4600 R4601 R4602 C4431 C4434 C4453 C4455 C4456 C4457 D4402 R4459 C4476 5 2 6 8 1 3 7 4 Q4421 R4476 L4474 C4401 C4403 C4404 C4410 C4417 C4419 C4447 C4461 C4486 C4488 C4505 C4506 L4401 L4403 R4401 ...

Page 436: ...02 C4303 C4304 C4305C4306 C4307 C4316 C4336 C4361 C4362 C4363 C4381 CR4301 CR4302 CR4303 L4301 L4302 L4333 L4361 R4303 R4304 R4315 R4361 SH4302 11 1 20 10 U4301 C4311 C4312 C4313 C4314 C4315 C4321 C4324 CR4311 CR4321 L4311 R4313 R4314 R4322 R4323 C4025 C4451 C4463 C4469 C4470 C4473 C4499 D4452 R4455 R4457 R4472 R4475 R4496 TP4531 VR4473 C4333 C4334 C4338 L4332 Q4331 Q4332 R4334 R4335 R4336 R4338 R...

Page 437: ...0pF C4507 R4474 100K 10K R4507 10K R4506 100K R4409 4 3K R4473 9V3 D4452 D4451 D4471 C4465 11pF C4491 100pF C4469 5 6V VR4473 C4444 C4452 C4466 C4459 100pF C4443 7 5pF 120 R4457 R4472 C4463 C4498 6 8pF L4493 17nH C4492 100pF R4471 R4491 11K J4401 1 1 L4491 17nH L4492 17nH C4448 12pF J4401 3 3 10pF C4494 5 6pF C4496 J4401 2 2 DUMMY 12pF C4474 2pF C4475 17nH L4472 RX_IN_VHF_PA_1 RXIN C4480 D4472 FEC...

Page 438: ...3 AUX4 20 AVDD 40 BIAS1 63A27 U4201 C4231 DATA 01uF VDDA_UHF_FN_1 L4201 390nH 01uF C4232 BWSELECT_UHF_FN_1 2 2uF C4233 VCOMOD_UHF_FN_1 510pF C4225 C4208 0 1uF 0 1uF C4254 TP4201 1 C4206 10uF R4261 150K 33K R4206 C4263 1 5pF L4231 PRESC CSX 2 2uH MODIN_UHF_FN_1 C4261 62pF 5V_UHF_FN_2 DATA_UHF_FN_1 C4214 2 2uF VCOBIAS_2 C4205 01uF 150 R4201 C4288 IN_5V_RF_REG_UHF_FN_1 16_8MHz 2 GND 3 OUT VCC 4 VCNTL...

Page 439: ...3 6 8pF 100K C4331 R4339 Vac C4351 100pF VCOMOD 390nH L4311 C4355 2 2uF C4362 Vac CR4321 C4322 Vac SHIELD SH4302 Vac C4374 Vac R4337 270 R4314 C4373 Vac C4306 2pF C4311 100pF C4371 0 1uF 0 22uF 100pF C4308 0 1uF C4316 C4335 Vac Vac R4345 C4383 Vac R4336 8 2pF C4337 C4303 C4354 51pF C4382 Vac 2 2uF R4312 5 6K 30 R4303 390nH R4338 Vac L4333 R4334 Vac 8 2pF 2 2K R4342 C4302 390nH C4332 Vac PRESC L430...

Page 440: ...4019 Vac 12pF C4018 R4055 Vac 36pF C4001 C4020 1 8pF 330pF C4010 43pF C4005 1 8pF D4001 C4027 36pF 330pF C4022 C4012 D4051 IO1 1 IO2 2 IO3 3 IO4 4 470nH Vac L4008 R4016 RXIN 16pF C4053 1 8pF C4029 Vac C4016 IF_UHF_FE IN NEG POS R4052 0 TBD L4002 TP4001 R4003 3 9K Vac C4025 C4014 100pF IN NEG POS TBD L4001 R4002 330 Vac 150 R4054 R4009 9V3_UHF_FE 13pF C4031 RXINJ 100pF C4015 270 R4013 36pF TP4002 C...

Page 441: ... CFWC455G Y3101 1 2 R 1 7 44 395MHz GND 2 GND1 4 C3131 1pF NU 0 1uF C3145 5V_VHF_IF_1 IFIN_VHF_IF_1 IF 330 R3116 10K R3134 0 1 u F C3144 18pF C3114 10K R3155 R3151 VDD 7 VSS NU 1 2K U3111 4 MC74HC4066 12 CNTL 14 CNTL 5 4 3 VDD 14 VSS 7 U3115 2 MC74HC4066 0 1 u F C3104 C3135 33pF 12 CNTL 11 14 VDD 7 VSS 7 U3115 4 MC74HC4066 MC74HC4066 CNTL 5 4 3 VDD 14 VSS 3 3 K U3111 2 R3145 0 1 u F C3140 3 9 0 R3...

Page 442: ...F C0499 2113743L09 470pF C0501 2113741F49 10000pF C0502 2113743L09 470pF C0503 2113743L09 470pF Circuit Ref Motorola Part No Description C0504 2113743L09 470pF C0505 2113743L09 470pF C0506 2113743L09 470pF C0508 2113743L09 470pF C0509 2113743L09 470pF C0510 2113741F17 470pF C0511 2113743L09 470pF C0512 2113743L09 470pF C0513 2113741F17 470pF C0514 2113743L09 470pF C0515 2113743L09 470pF C0516 2113...

Page 443: ... 100pF C4474 2113740F29 12pF C4475 2113740F10 2 0pF C4478 2113741A21 1000pF C4479 2113740F51 100pF C4481 2113741A32 3000pF C4482 2113740F38 30pF C4483 2113740A55 100pF C4484 2113740F38 30pF C4485 2113740F38 30pF C4486 2113740F38 30pF C4487 2113740F38 30pF C4488 2113740F51 100pF C4491 2111078B14 11pF C4492 2111078B42 100pF C4494 2180464E63 10pF C4495 2113741A21 1000pF C4496 2111078B07 5 6pF C4497 2...

Page 444: ...0224 0662057A71 8 2K R0228 0662057B47 0 R0229 0662057A01 10 R0241 0662057A89 47K R0242 0662057B47 0 R0251 0662057A89 47K R0252 0662057A91 56K R0253 0662057A97 97K Circuit Ref Motorola Part No Description R0254 0662057A73 10K R0255 0662057A73 10K R0256 0662057A97 97K R0257 0662057A57 2 2K R0261 0662057A73 10K R0262 0662057B08 270K R0265 0662057A82 24K R0267 0662057A89 47K R0268 0662057A73 10K R0269...

Page 445: ...2057A73 10K R4482 0662057B09 300K R4483 0662057A97 100K R4484 0662057A93 68K R4485 0662057C53 120 R4486 0662057C53 120 R4487 0662057A97 100K R4488 0662057A59 2 7K R4491 0662057A74 11K R4492 0662057A73 10K R4495 0680195M18 51 R4496 0680194M23 82 R4497 0680195M18 51 R4501 0662057A67 5 6K R4502 0662057A93 68K R4503 0662057A63 3 9K R4504 0662057A73 10K R4506 0662057A73 10K R4507 0662057A73 10K R4511 0...

Page 446: ...4 14 UHF 25 40W PCB Schematics Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 447: ...GM338 Mobile Radios UHF2 40W Bipolar 450 520MHz Service Information Issue December 2003 ...

Page 448: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 449: ...ter Power Amplifier PA 40W 2 3 3 1 Power Controlled Stage 2 4 3 2 Pre Driver Stage 2 4 3 3 Driver Stage 2 4 3 4 Final Stage 2 4 3 5 Bi Directional Coupler 2 4 3 6 Antenna Switch 2 5 3 7 Harmonic Filter 2 5 3 8 Power Control 2 5 4 0 Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 6 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Operation 2 9 Section 3 ...

Page 450: ...t 4 3 UHF Band 2 450 520 MHz 40W 8480645Z04 Top Side 4 3 UHF Band 2 450 520 MHz 40W 8480645Z04 Bottom Side 4 4 UHF Band 2 450 520 MHz Power Amplifier 40W 4 5 UHF Band 2 450 520 MHz FRACN 4 6 UHF Band 2 450 520 MHz Voltage Controlled Oscillator 4 7 UHF Band 2 450 520 MHz Receiver Front End 4 8 UHF Band 2 450 520 MHz IF 4 9 UHF Band 2 PCB 8480645Z04 Parts List 25 40W 4 10 ...

Page 451: ... 470 494 MHz 3 5 Gain Roof Mount X RAE4157_ BNC 494 512 MHz 5dB Gain Roof Mount X 6804112J06 GM338 User Guide x Indicates one of each is required General Specifications Channel Capacity GM338 128 Power Supply 13 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 198mm 25 40W add 9mm for Volume Knob Weight GM338 1400 g Sealing Withstands rain testing per MIL STD 81...

Page 452: ... dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 450 520 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious Rejection ETS 70 dB 12 5 kHz 75 dB 20 25 kHz Ra...

Page 453: ...plifier first mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack C...

Page 454: ... the 9 3 volt supply via L5003 and R5002 A 3dB pad R5006 R5007 R5011 and R5008 R5010 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal Varactor diodes D5004 and D5005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A following 1 dB pad R5013 R5015 sta...

Page 455: ...ms at 60 deviation from U3103 pin 8 DISCAUDIO which is fed to ASFIC_CMP U0221 pin 2 part of the controller circuits A received signal strength indicator RSSI signal is available at U3101 pin 5 which has a dynamic range of 70 dB The RSSI signal is interpreted by the µP U0101 pin 63 and is available at accessory connector J0501 15 3 0 Transmitter Power Amplifier PA 40W The radio s 40W power amplifie...

Page 456: ...nt current flow for proper operation The voltage of the line Bias_2_UHF_PA_1 is set in transmit mode by the ASFIC and fed to the gate of Q5431 via resistive network R5630 R5631 and R5632 This bias voltage is also factory tuned If the transistor is replaced the bias voltage must be tuned using the Customer Programming Software CPS Care must be taken not to damage the device by exceeding the maximum...

Page 457: ...e a dc voltage to the RFIN port of the PCIC pin 1 that is proportional to the sampled RF power The PCIC has internal digital to analog converters DACs which provide a reference voltage to the control loop The reference voltage level is programmable through the SPI line of the PCIC and is proportional to the desired power setting of the transmitter Factory programming at several points across the f...

Page 458: ... C5262 and R5262 are not used and C5263 is increased to 0 1 uF 4 2 Fractional N Synthesizer The LVFRAC N synthesizer IC U5201 consists of a pre scaler programmable loop divider control divider logic phase detector charge pump A D converter for low frequency digital modulation balanced attenuator used to balance the high frequency analog modulation and low frequency digital modulation 13V positive ...

Page 459: ...CC DC5V XTAL1 XTAL2 WARP PREIN VCP REFERENCE OSCILLATOR VOLTAGE MULTIPLIER DATA U0101 PIN 100 CLOCK U0101 PIN 1 CSX U0101 PIN 2 MOD IN U0221 PIN 40 5V U4211 PIN 1 7 8 9 10 13 30 23 24 25 32 47 VMULT2 VMULT1 BIAS1 SFOUT AUX3 AUX4 IADAPT IOUT GND FREFOUT LOCK 4 19 6 22 33 44 43 45 3 2 28 14 15 40 FILTERED 5V STEERING LOCK U0101 PIN 56 PRESCALER IN FREF U0221 PIN 34 39 BIAS2 41 48 5 20 34 36 5V U4211...

Page 460: ... CR5311 tunes the full TX frequency range TXINJ from 450 MHz to 520 MHz and at varactor diodes CR5301 CR5302 and CR5303 tunes the full RX frequency range RXINJ from 405 MHz to 475 MHz The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit external transistor Q5301 is used in conjunction with the internal transistor for better side band noise Figure 2 4 UHF VCO...

Page 461: ...221 transforms this current into a voltage that is applied to varactor diodes CR5311 for transmit CR5301 CR5302 and CR5303 for receive and alters the output frequency of the VCO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U5201 40 or BIAS 2 U5201 39 The currents are set by the value of R5251 or R5252 respectively The selec...

Page 462: ...2 10 Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 463: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 464: ...at R5060 Inject RF into J5401 Is tuning voltage OK No Yes Check RF amp Q5003 Stage Check filter between C5015 T5051 Yes Check T5051 T5052 D5051 R5052 L5008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltage ci...

Page 465: ...BIAS_1 Check No No Change Q4573 START No power Is Vctrl there Is Q5573 OK Check voltage n U5501 pin 4 Check voltage on U5501 pin 5 Check R5422 5 and go back to top Troubleshoot ASFIC Change PCIC Check R5409 and R5473 and go back to top Check MOSBIAS_2 Check ASFIC Are D5471 D5472 OK Change D5471 D5472 No No No Yes Yes Yes Yes Yes Yes Yes Yes No No Check PCIC Yes Change Q5421 Change Q5431 Yes Change...

Page 466: ...place U5201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U5201 Replace or resolder necessary components Is RF level at U5201 Pin 32 12 x 25 dBm Are R5221 R5222 R5223 C5221 C5222 C5223 OK Replace U5201 If C5227 is OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U5201 toggle when channel is changed Check programming lines between U0101...

Page 467: ...1 If C5321 and R5321 are OK then replace CR5321 Replace C5322 Replace C5325 NO NO YES YES TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U5201 Pin 2 and U5301 Pin 19 Is RF available If all parts from U5301 Pin 8 to Base of Q5332 are OK replace U5301 If all parts associated with the pins are OK replace Q5332 If all parts from collector of Q5332 to TP5003 are OK Replace ...

Page 468: ...3 6 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 469: ...of the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components The UHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF B2 40W Diagrams and Parts Lists PCB 8480645Z04 Main Board Top Side 8480645Z04 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 40W FRA...

Page 470: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 471: ...C0478 C0490 C5472 C5474 C5475 C5480 C5510 D5471 D5472 L5472 L5473 C5432 C5435 C5449 C 5 4 5 0 C5460 C5520 D5403 R5607 C5423 C5481 C5485 C5489 C5490 C5495 C5497 C5602 C5478 C5493 C5444 C5465 C5466 C5491 C5521 C5522 R5501 R5502 U5502 C5459 C5507 3 2 J5401 C5441 C5442 C5443 C3124 C3131 C3132 C3133 C3134 C3135 C3136 C3137 L3124 R3123 R3124 R3130 R3132 C3115 R3111 R3117 11 1 20 10 U3101 C3143 R3135 C31...

Page 472: ...407 C5409 C5412 C5414 C5416 C5462 C5487 L5411 R5405 R5411 R5412 R5427 R5428 R5433 R5495 R5497 TP5536 C5424 C5483 L5541 L5543 Q5451 R5414 R5487 R5488 R5513 C5446 C5630 3 2 1 R5485 R5486 R5630 R5631 R5632 TP5537 C5632 R5633 VR5472 C5421 C5484 L5402 Q5431 C0499 C0611 VR0601 C5418 C5479 C5502 C5503 C5504 Q5473 R5422 R5423 R5424 R5425 R5431 R5480 R5482 R5483 R5484 R5492 R5503 R5514 R5523 TP5533 1 17 9 ...

Page 473: ...R_SET C5420 39pF 16pF C5434 R5601 4 7 4 7 R5600 R5602 4 7 100pF C5422 C5423 1uF G4 S1 S2 S3 S4 D G G1 7 G2 8 G3 9 10 Q5431 MRF5015 15pF C5432 20pF C5435 20pF C5450 39pF C5460 C5449 20pF C5437 L5440 D5403 10 R5421 13 85nH L5441 3 MRF650 Q5441 4 2 1 NU NU NU NU C5443 C5444 C5466 C5465 7 5pF C5491 30pF C5442 C5441 27pF C5459 100pF D5471 R5457 120 C5469 100pF 120 R5471 D5452 D5454 D5451 C5452 R5473 4 ...

Page 474: ...29 C5230 2 2uF 2 2uF C5233 0 1uF C5289 39K R5251 VCTRL TP5201 C5242 PRESC CSX 100pF L5231 VCOMOD_UHF_FN_1 IN_5V_RF_REG 2 2uH C5241 100pF 5 A2 4 A3 K1 1 K2 2 K3 3 DATA_UHF_FN_1 6 A1 D5201 C5221 01uF 01uF C5203 R5252 30K VCTRL_UHF_FN_1 01uF C5234 L5201 390nH 62pF C5261 5V 5V 2 2uF C5215 VDDA VDDA U5201 4 57 VDC 19 to 17 dBm Rx 17 to 12 dBm Tx 4 98 VDC 0 VDC Rx 3 09 VDc Rx 2 65 VDC Tx 4 97 VDC 25KHz ...

Page 475: ...5333 TRB 0 220 R5338 5V 100pF C5382 100pF C5383 15nH L5332 PRESC C5311 100pF 10K R5323 C5305 VSF C5375 0 1uF C5316 2 2K R5342 2 2uF C5363 C5355 22K R5332 C5361 100pF 6 8K R5322 1pF C5321 22 R5331 1 P1 2 P2 3 P3 Q5332 L5312 RESONATOR 50U54 U5301 C5307 100pF CR5302 5 6K R5301 C5306 2pF R5347 0 0 22uF C5371 C5318 0 22uF 10 R5344 15pF R5339 22 R5315 C5312 VCOMOD_UHF_VCO 0 1K R5343 0 22uF C5362 5V_UHF_...

Page 476: ...R 4 6 3 1 100K 27pF R5012 C5007 68 R5007 270 TBD L5002 IN NEG R5011 Q5001 FECTRL_1_UHF_FE 1pF C5029 R5020 10 C5060 R5016 C5023 C5054 16pF C5009 8 2pF IF D5003 0 1uF C5034 FECTRL_1 C5004 16pF C5006 Q5003 L5009 10 R5021 R5051 15nH 51 20pF C5003 330 R5002 C5013 3300pF 0 R5052 270nH R5054 RXIN L5003 330pF C5012 C5027 1pF R5018 R5053 R5003 4 7K R5013 150 R5009 C5028 100pF C5015 R5055 9V3_UHF_FE IF_UHF_...

Page 477: ... CFWC455G Y3101 1 2 R 1 7 44 395MHz GND 2 GND1 4 C3131 1pF NU 0 1uF C3145 5V_VHF_IF_1 IFIN_VHF_IF_1 IF 330 R3116 10K R3134 0 1 u F C3144 18pF C3114 10K R3155 R3151 VDD 7 VSS NU 1 2K U3111 4 MC74HC4066 12 CNTL 14 CNTL 5 4 3 VDD 14 VSS 7 U3115 2 MC74HC4066 0 1 u F C3104 C3135 33pF 12 CNTL 11 14 VDD 7 VSS 7 U3115 4 MC74HC4066 MC74HC4066 CNTL 5 4 3 VDD 14 VSS 3 3 K U3111 2 R3145 0 1 u F C3140 3 9 0 R3...

Page 478: ...7 2113743L09 470pF C0499 2113743L09 470pF C0501 2113741F49 10000pF C0502 2113743L09 470pF Circuit Ref Motorola Part No Description C0503 2113743L09 470pF C0504 2113743L09 470pF C0505 2113743L09 470pF C0506 2113743L09 470pF C0508 2113743L09 470pF C0509 2113743L09 470pF C0510 2113741F17 470pF C0511 2113743L09 470pF C0512 2113743L09 470pF C0513 2113741F17 470pF C0514 2113743L09 470pF C0515 2113743L09...

Page 479: ...pF C5473 2113740F51 100pF C5474 2113740F29 12pF C5475 2113740F10 2pF C5478 2113741A21 1000pF C5479 2113740F51 100pF C5481 2113741A32 3000pF C5482 2113740F38 30pF C5483 2113740A55 100pF C5484 2113740F38 30pF C5485 2113740F38 30pF C5486 2113740F38 30pF C5487 2113740F38 30pF C5488 2113740F51 100pF C5489 2113741A32 3000pF C5490 2113741A32 3000pF C5491 2111078B10 7 5pF C5492 2111078B42 100pF C5493 2113...

Page 480: ...57A73 10K R0207 0662057A57 2 2K R0208 0662057A57 2 2K R0211 0660076E70 7 5K R0212 0660076E70 7 5K R0221 0662057A82 24K R0222 0662057A82 24K R0223 0662057A84 30K R0224 0662057A71 8 2K Circuit Ref Motorola Part No Description R0228 0662057B47 0 R0229 0662057A01 10 R0241 0662057A89 47K R0242 0662057B47 0 R0251 0662057A89 47K R0252 0662057A91 56K R0253 0662057A97 97K R0254 0662057A73 10K R0255 0662057...

Page 481: ...R5475 0662057B47 0 R5480 0662057A97 97K R5482 0662057B09 300K R5483 0662057A97 97K R5484 0662057A93 68K R5485 0662057C53 120 R5486 0662057C53 120 R5487 0662057A97 97K R5488 0662057A59 2 7K R5491 0662057A74 11K R5492 0662057A73 10K R5495 0680195M18 51 R5496 0680194M23 82 R5497 0680195M18 51 R5501 0662057A67 5 6K R5502 0662057A93 68K R5503 0662057A63 3 9K R5504 0662057A73 10K R5506 0662057A73 10K R5...

Page 482: ...4 14 UHF Band 2 25 40W PCB Schematics Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 483: ...GM338 Mobile Radio UHF B1 HIGH POWER LDMOS 403 470MHz Service Information Issue December 2003 ...

Page 484: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 485: ...itter Power Amplifier PA 40 W 2 3 3 1 First Power Controlled Stage 2 4 3 2 Power Controlled Driver Stage 2 4 3 3 Final Stage 2 4 3 4 Directional Coupler 2 5 3 5 Antenna Switch 2 5 3 6 Harmonic Filter 2 5 3 7 Power Control 2 5 4 0 UHF 403 470 MHz Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 7 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Operation ...

Page 486: ...Schematics Parts List 4 3 UHF 403 470 MHz 25 40W 8486127Z01 Top Side 4 3 UHF 403 470 MHz 25 40W 8486127Z01 Bottom Side 4 4 UHF 403 470 MHz Power Amplifier 25 40W 4 5 UHF 403 470 MHz FRACN 4 6 UHF 403 470 MHz Voltage Controlled Oscillator 4 7 UHF 403 470 MHz Receiver Front End 4 8 UHF 403 470 MHz IF 4 9 UHF PCB 8486127Z01 Parts List 25 40W 4 10 ...

Page 487: ...3_ BNC 450 470 MHz 3 5dB Gain Roof Mount X RAE4154_ BNC 450 470 MHz 5dB Gain Roof Mount X RAE4158_ BNC 406 420 MHz 3 5dB Gain Roof Mount X 6804112J06 GM338 User Guide x Indicates one of each is required General Specifications Channel Capacity GM338 128 Power Supply 13 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 198mm 25 45W add 9mm for Volume Knob Weight GM...

Page 488: ... dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 403 470 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious Rejection ETS 70 dB 12 5 kHz 75 dB 20 25 kHz Ra...

Page 489: ...mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack Antenna Control...

Page 490: ...a L4003 and R4002 A switchable 3dB pad R4066 R4007 R4063 R4064 and R4070 controlled via line FECTRL_2 and Q4004 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal The varactor diodes D4004 and D4005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A fol...

Page 491: ... DISCAUDIO which is fed to the ASFIC_CMP U0221 pin 2 part of the Controller circuitry A Received Signal Strength Indicator RSSI signal is available at U3101 pin 5 having a dynamic range of 70 dB The RSSI signal is interpreted by the microprocessor U0101 pin 63 and in addition is available at accessory connector J0501 15 3 0 UHF 403 470 MHz Transmitter Power Amplifier PA 40 W The radio s 40W PA is ...

Page 492: ...ias and a quiescent current flow for proper operation The bias is set during transmit mode by U4501 24 and fed to the gate of Q4421 via the resistive network R4480 R4408 R4415 and R4416 3 3 Final Stage The final stage is an LDMOS MRF 1570 device Q4441 It provides a gain of 11dB It integrates two MRF1535 die inside These two die are being run in parallel The output of each of the device die inside ...

Page 493: ...498 form a Butterworth low pass filter to attenuate harmonic energy of the transmitter to specifications level R4491 is used to drain electrostatic charge that might otherwise build up on the antenna The harmonic filter also prevents high level RF signals above the receiver passband from reaching the receiver circuits improving spurious response rejection 3 7 Power Control The transmitter uses the...

Page 494: ...olled Oscillator VCO 4 1 Reference Oscillator The reference oscillator Y4262 contains a temperature compensated crystal oscillator with a frequency of 16 8 MHz An Analogue to Digital A D converter internal to U4201 LVFRAC N and controlled by the microprocessor via serial interface SRL sets the voltage at the warp output of U4201 pin 25 to set the frequency of the oscillator The output of the oscil...

Page 495: ...d by the positive voltage multiplier circuitry D4201 C4202 C4203 This voltage multiplier is basically a diode capacitor network driven by two 1 05MHz 180 degrees out of phase signals U4201 14 and 15 Output LOCK U4201 4 provides information about the lock status of the synthesizer loop A high level at this output indicates a stable loop IC U4201 provides the 16 8 MHz reference frequency at pin 19 T...

Page 496: ... 3 0V and 10 0V at varactor diode CR4311 will tune the full TX frequency range TXINJ from 403 MHz to 470 MHz and at varactor diodes CR4301 CR4302 and CR4303 will tune the full RX frequency range RXINJ from 358 MHz to 425 MHz The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit an external transistor Q4301 is used in conjunction with the internal transistor f...

Page 497: ...3 C4221 C4225 L4221 transforms this current into a voltage that is applied to the varactor diodes CR4311 for transmit CR4301 CR4302 CR4303 for receive and alters the output frequency of the VCO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U4201 40 or BIAS 2 U4201 39 The currents are set by the value of R4251 or R4252 respec...

Page 498: ...2 10 UHF 403 470 MHz Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 499: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 500: ...at R4060 Inject RF into J4401 Is tuning voltage OK No Yes Check RF amp Q4003 Stage Check filter between C4015 T4051 Yes Check T4051 T4052 D4051 R4052 L4008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltage ci...

Page 501: ...ES PCIC U4501 Pin 14 9 3V DC Check 9 3 V Regulator U0641 NO YES PCIC U4501 Pin 16 4V DC Replace PCIC U4501 NO YES TP4530 9 1V DC If U4201 Pin 2 is high replace PCIC U4501 otherwise check controller and FGU YES NO TP4531 0 5V DC Replace PCIC U4501 Check Forward Power Sense Circuit D4451 Check Forward Power Sense Circuit D4451 NO YES PCIC U4501 Pin 5 1V DC Check Power Setting Tuning Components betwe...

Page 502: ...71 D4472 OK Check ASFIC NO YES Check Q4421 gate 12kohm and drain resis tances 15kohm NO Change Q4421 Is drive from VCO 4dBm Do visual check on all components YES Is voltage drop across R4497 4 5V NO 1 Check PCIC_MOS BIAS_1 Check PCIC Change D4471 D4472 Check Q4441 gate 63kohm and drain resis tances 15kohm NO YES Change Q4441 NO Change U4401 YES YES NO NO Troubleshoot VCO ...

Page 503: ...4201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U4201 Replace or resolder necessary components Is RF level at U4201 Pin 32 12 x 25 dBm Are R4221 R4222 R4223 C4221 C4222 C4223 OK Replace U4201 If L4225 C4229 C4227 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U4201 toggle when channel is changed Check programming lines between...

Page 504: ...21 and R4321 are OK then replace CR4321 Replace C4322 Replace C4325 NO NO YES YES If parts between R4402 U4301 Pin10 are OK replace U4301 TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U4201 Pin 2 and U4301 Pin 19 Is RF available If all parts from U4301 Pin 8 to Base of Q4332 are OK replace U4301 If all parts associated with the pins are OK replace Q4332 If all parts f...

Page 505: ... the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components The UHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF 25 40W Diagrams and Parts Lists PCB 8486127Z01 Main Board Top Side 8486127Z01 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 25 40W FR...

Page 506: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 507: ...Q4471 R4401 R4402 R4403 R4405 R4504 TP4530 1 16 8 9 U4401 Q4472 R4511 R4512 VR4471 C4444 C4445 C4450 C4455 C4456 C4467 C4477 C4487 C4521 C4522 L4490 R4501 R4502 U4502 C4459 C4507 18 1 J0451 C0448 C0449 C0470 C0471 C0472 C0473 C0474 C0476 C0477 C0478 C0490 C4472 C4474 C4475 C4480 C4510 D4471 D4472 L4472 L4473 C4001 C4002 C4009 C4014 C4026 C4027 D4001 D4002 D4003 L4001 L4002 L4006 Q4001 Q4003 R4003 ...

Page 508: ...474 R4506 R4507 R4471 TP4532 C4492 C4336 L4333 R4019 SH4302 TP4003 C4333 C4334 C4338 C4361 C4362 C4363 C4364 C4365 L4332 L4361 L4362 Q4331 Q4332 R4334 R4335 R4336 R4338 R4339 R4340 R4342 R4344 R4347 R4360 R4361 R4362 R4363 C4422 C4423 C4437 C4439 L4421 L4436 L4437 L4438 C4424 C4629 C4630 C4631 C4632 Q4451 R4414 R4440 R4481 R4485 R4486 R4487 R4488 R4489 R4630 R4631 R4632 R4634 R4635 S4440 TP4537 TP...

Page 509: ...401 30C65 EP 17 G2 11 GND1 4 GND2 5 GND3 12 GND4 C4417 100pF NU NU NU C4447 C4419 C4461 C4462 39pF 100 R4415 R4416 100 M3421 HEATSINK 022uF C4416 022uF C4414 100pF C4415 100pF C4413 1 8K R4428 R4412 2K 3 7 to 3 9 VDC NU NU NU Q4451 022uF C4425 20K R4408 100pF C4426 R4488 R4487 TP4536 Load 10K R4480 PCIC_MOSBIAS_1 620 R4424 620 R4423 620 R4422 NU R4431 R4425 620 6 2 VDC 28W 6 5 VDC 44W Q4473 R4440 ...

Page 510: ...D4261 01uF C4231 PRESC_UHF_FN_1 018uF C4212 390nH L4201 C4242 100pF 4 7uF C4253 BWSELECT_UHF_FN_1 MODIN VCOMOD 01uF C4221 0 C4222 0 1uF R4211 2 2uF C4215 C4207 12uH L4221 0 1uF C4251 100pF C4241 C4243 1000pF VSF_UHF_FN_1 C4252 01uF C4235 LOCK 2 2uF C4213 C4261 MODIN_UHF_FN_1 XTAL1 23 24 XTAL2 5V_UHF_FN_1 VBPASS 21 VCP 47 15 VMULT1 VMULT2 14 VMULT3 12 VMULT4 11 13 VRO WARP 25 PVREF 35 REFSEL 18 SFB...

Page 511: ...3 SUPER_FLTR U4301 4 COLL_RFIN 20 FLIP_IN 11 GND_BUFFERS 9 GND_FLAG R4346 10K 50U54 L4312 RESONATOR 1 P1 2 P2 3 P3 C4314 1 5pF C4307 100pF C4352 0 1uF C4321 Q4331 1pF 4 1 3 CR4301 Q4333 2 6 C4339 C4375 L4332 L4361 390nH VCTRL 0 R4341 C4324 2 4pF 2 2K R4342 6 8pF TRB_UHF_VCO C4331 C4304 3 9pF C4333 C4374 C4335 100pF 270 R4314 7 5K R4311 TXINJ_UHF_VCO R4334 R4301 L4301 390nH R4323 5 6K 100K 1K R4343...

Page 512: ...025 R4017 3 3K R4016 R4018 C4028 01uF C4020 33pF 3 3K C4004 33pF C4005 1 8pF 33pF C4001 C4002 C4006 33pF C4007 FECTRL_1_UHF_FE 30pF 100K R4001 C4009 10pF R4003 3 9K R4004 2 7K D4007 10K IF_UHF_FE R4005 C4014 100pF 470nH K9V1_UHF_FE L4003 R4007 100 RXIN_UHF_FE 330pF 3300pF C4012 C4013 100pF C4015 GND_UHF_FE C4011 3300pF 330 RXINJ_UHF_FE R4002 Q4004 33pF C4021 T4052 C4017 D4051 1 8pF 12pF Q4003 Q400...

Page 513: ...DD 7 VSS 2 4K R3144 U3111 2 5 CNTL 4 3 NU C3131 C3122 039uF R3107 5 RSSIOUT 9 RSSI_FEED 6 VCC 6 8K 13 LIM_DEC1 12 LIM_DEC2 20 MIXOUT 4 OSCIN 3 OSCOUT 10 QUADIN 1 RFIN 2 RFIN_DEC AUDIO_FEED GND 15 18 IFAMPIN 16 IFAMPOUT 19 IFAMP_DEC1 17 IFAMP_DEC2 14 LIMIN 11 LIMOUT SA616 U3101 8 AUDIOOUT 7 CNTL 13 1 2 VDD 14 VSS 7 5V U3115 1 R3105 L3100 100 0 1uF 9V3 NU 3 2 1 C3134 BWSELECT 45B02 Y3102 455KHz C310...

Page 514: ...0pF C0496 2113743L09 470pF C0497 2113743L09 470pF C0499 2113743L09 470pF C0501 2113741F49 10nF Circuit Ref Motorola Part No Description C0502 2113741F17 470pF C0503 2113741F17 470pF C0504 2113741F17 470pF C0505 2113741F17 470pF C0506 2113741F17 470pF C0508 2113741F17 470pF C0509 2113741F17 470pF C0510 2113741F17 470pF C0511 2113741F17 470pF C0512 2113741F17 470pF C0513 2113741F17 470pF C0514 21137...

Page 515: ...111078B42 100pF C4440 2111078B29 33pF C4441 2111078B29 33pF C4442 2111078B16 13pF C4443 2111078B09 6 8pF C4444 2111078B16 13pF C4445 2111078B09 6 8pF C4448 2180464E65 12pF C4449 2111078B03 3 9pF C4450 2111078B03 3 9pF C4454 2113740A18 4 3pF C4457 2113740A42 36pF C4459 2113740A55 100pF C4462 2113740F41 39pF C4469 2113740A55 100pF C4472 2111078B31 36pF C4473 2113740F51 100pF C4474 2113740F29 12pF C4...

Page 516: ...5 4 7K R0174 0662057A73 10K R0175 0662057A73 10K R0176 0662057A84 30K R0177 0662057A65 4 7K R0178 0662057A89 47K R0179 0662057A89 47K R0181 0662057A65 4 7K R0182 0662057A89 47K Circuit Ref Motorola Part No Description R0183 0662057A65 4 7K R0184 0662057A89 47K R0185 0662057A65 4 7K R0186 0662057A89 47K R0201 0662057A25 100 R0202 0662057A43 560 R0203 0662057A25 100 R0204 0662057A43 560 R0205 066205...

Page 517: ...2057A36 300 R4405 0662057A32 200 R4408 0662057A80 20K R4409 0662057A97 100K R4412 0662057A56 2K R4415 0662057A15 39 R4416 0662057A15 39 R4422 0611079A69 620 R4423 0611079A69 620 R4424 0611079A69 620 R4425 0611079A69 620 Circuit Ref Motorola Part No Description R4428 0662057A55 1 8K R4457 0683962T51 120 R4473 0662057A64 4 3K R4474 0662057A97 100K R4475 0662057B47 0 R4480 0662057A73 10K R4481 066205...

Page 518: ...4 14 UHF 25 40W PCB Schematics Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 519: ...GM338 Mobile Radios UHF B2 HIGH POWER LDMOS 450 520 MHz Service Information Issue December 2003 ...

Page 520: ... copyrighted computer program Accordingly any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola Furthermore the purchase of Motorola products shall not be deemed to grant either directly or by implication estoppel or otherwise any license under the copyr...

Page 521: ...mitter Power Amplifier PA 40W 2 3 3 1 First Power Controlled Stage 2 4 3 2 Power Controlled Driver Stage 2 4 3 3 Final Stage 2 4 3 4 Directional Coupler 2 4 3 5 Antenna Switch 2 5 3 6 Harmonic Filter 2 5 3 7 Power Control 2 5 4 0 UHF 450 520 MHz Frequency Synthesis 2 6 4 1 Reference Oscillator 2 6 4 2 Fractional N Synthesizer 2 6 4 3 Voltage Controlled Oscillator VCO 2 8 4 4 Synthesizer Operation ...

Page 522: ...t 4 3 UHF Band 2 450 520 MHz 40W 8486250Z02 Top Side 4 3 UHF Band 2 450 520 MHz 40W 8486250Z02 Bottom Side 4 4 UHF Band 2 450 520 MHz Power Amplifier 40W 4 5 UHF Band 2 450 520 MHz FRACN 4 6 UHF Band 2 450 520 MHz Voltage Controlled Oscillator 4 7 UHF Band 2 450 520 MHz Receiver Front End 4 8 UHF Band 2 450 520 MHz IF 4 9 UHF Band 2 PCB 8486250Z02 Parts List 25 40W 4 10 ...

Page 523: ...BNC 470 494 MHz 3 5 Gain Roof Mount X RAE4157_ BNC 494 512 MHz 5dB Gain Roof Mount X 6804112J06 GM338 User Guide x Indicates one of each is required General Specifications Channel Capacity GM338 128 Power Supply 13 2Vdc 10 8 15 6Vdc Dimensions H x W x D mm Depth excluding knobs GM338 59mm x 179mm x 198mm 25 40W add 9mm for Volume Knob Weight GM338 1400 g Sealing Withstands rain testing per MIL STD...

Page 524: ... dB 25 kHz Audio Response 300 3000 Hz 1 to 3 dB Audio Distortion 1000Hz 60 Rated Maximum Deviation 3 typical Receiver UHF Frequencies Full Bandsplit UHF 450 520 MHz Channel Spacing 12 5 20 25 kHz Sensitivity 12 dB SINAD 0 30 µV 0 22 µV typical Intermodulation ETS 65 dB Adjacent Channel Selectivity ETS 65 dB 12 5 kHz 70 dB 20 kHz 75 dB 25 kHz Spurious Rejection ETS 70 dB 12 5 kHz 75 dB 20 25 kHz Ra...

Page 525: ...plifier first mixer high IF low IF and receiver back end Two varactor tuned bandpass filters perform antenna signal pre selection A cross over quad diode mixer converts the signal to the first IF of 44 85 MHz Low side first injection is used Figure 2 1 UHF Receiver Block Diagram Demodulator 1 Crystal Filter Mixer Varactor Tuned Filter RF Amp Varactor Tuned Filter Pin Diode Antenna Switch RF Jack C...

Page 526: ... the 9 3 volt supply via L5003 and R5002 A 3dB pad R5006 R5007 R5011 and R5008 R5010 stabilizes the output impedance and intermodulation performance A second 2 pole varactor tuned bandpass filter provides additional filtering of the amplified signal Varactor diodes D5004 and D5005 are controlled by the same signal FECTRL_1 which controls the pre selector filter A following 1 dB pad R5013 R5015 sta...

Page 527: ...n from U3103 pin 8 DISCAUDIO which is fed to ASFIC_CMP U0221 pin 2 part of the controller circuits A received signal strength indicator RSSI signal is available at U3101 pin 5 which has a dynamic range of 70 dB The RSSI signal is interpreted by the µP U0101 pin 63 and is available at accessory connector J0501 15 3 0 UHF 450 520 MHz Transmitter Power Amplifier PA 40W The radio s 40W PA is a three s...

Page 528: ...S MRF1570 device Q5441 It provides a gain of 11dB It integrates two MRF1535 die inside These two die are being run in parallel The output of each of the device die inside are combined to constitute the total output power This device also requires a positive gate bias and a quiescent current flow for proper operation The voltage of the line MOSBIAS_2 and MOSBIAS_3 are set in transmit mode by the AS...

Page 529: ...PCIC U5501 to control the power output of the radio A portion of the forward RF power from the transmitter is sampled by the bi directional coupler and rectified to provide a dc voltage to the RFIN port of the PCIC pin 1 that is proportional to the sampled RF power The ASFIC U0221 has internal digital to analog converters DACs which provide a reference voltage of the control loop to the PCIC via R...

Page 530: ...Y5262 is used Y5261 D5261 C5261 C5262 and R5262 are not used and C5263 is increased to 0 1 uF 4 2 Fractional N Synthesizer The LVFRAC N synthesizer IC U5201 consists of a pre scaler programmable loop divider control divider logic phase detector charge pump A D converter for low frequency digital modulation balanced attenuator used to balance the high frequency analog modulation and low frequency d...

Page 531: ... MODIN VCC DC5V XTAL1 XTAL2 WARP PREIN VCP REFERENCE OSCILLATOR VOLTAGE MULTIPLIER DATA U0101 PIN 100 CLOCK U0101 PIN 1 CSX U0101 PIN 2 MOD IN U0221 PIN 40 5V U4211 PIN 1 7 8 9 10 13 30 23 24 25 32 47 VMULT2 VMULT1 BIAS1 SFOUT AUX3 AUX4 IADAPT IOUT GND FREFOUT LOCK 4 19 6 22 33 44 43 45 3 2 28 14 15 40 FILTERED 5V STEERING LOCK U0101 PIN 56 PRESCALER IN FREF U0221 PIN 34 39 BIAS2 41 48 5 20 34 36 ...

Page 532: ...or diode CR5311 tunes the full TX frequency range TXINJ from 450 MHz to 520 MHz and at varactor diodes CR5301 CR5302 and CR5303 tunes the full RX frequency range RXINJ from 405 MHz to 475 MHz The tank circuits uses the Hartley configuration for wider bandwidth For the RX tank circuit external transistor Q5301 is used in conjunction with the internal transistor for better side band noise Figure 2 4...

Page 533: ...5 and L5221 transforms this current into a voltage that is applied to varactor diodes CR5311 for transmit CR5301 CR5302 and CR5303 for receive and alters the output frequency of the VCO The current can be set to a value fixed in the LVFRAC N IC or to a value determined by the currents flowing into BIAS 1 U5201 40 or BIAS 2 U5201 39 The currents are set by the value of R5251 or R5252 respectively T...

Page 534: ...2 10 UHF 450 520 MHz Frequency Synthesis THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 535: ... in the case of no audio OR ELSE go to B Yes No Spray or inject 44 85MHz into XTAL Filter FL3101 Audio heard B Yes No Check 2nd LO 44 395MHz at C3135 LO present B Yes Check voltages on U3101 Biasing OK No No A Yes Check Q3102 bias for faults Replace Q3102 Go to B Yes No Check circuitry around U3101 Replace U3101 if defect Check circuitry around Y3101 Replace Y3101 if defect Voltages OK ...

Page 536: ...at R5060 Inject RF into J5401 Is tuning voltage OK No Yes Check RF amp Q5003 Stage Check filter between C5015 T5051 Yes Check T5051 T5052 D5051 R5052 L5008 Yes 1st LO level OK Locked Yes Check FGU Yes Trace IF signal from C3101 to Q3101 Check for bad XTAL filter No Yes IF signal at Q3102 collector Before replacing U3101 check U3101 voltages Yes Check for 5VDC Is 9V3 present Check Supply Voltage ci...

Page 537: ...1 Check No No Change Q5473 START No power Is Vctrl there Is Q5473 OK Check voltage n pin 4 U5501 Check voltage on pin 5 U5501 Check R5422 5 and go back to top Troubleshoot ASFIC Change PCIC Check R5409 and R5473 and go back to top Check MOSBIAS_2 MOSBIAS_3 Check ASFIC Are D5471 D5472 OK Change D5471 D5472 No No No Yes Yes Yes Yes Yes Yes Yes Yes No No Check PCIC Yes Change Q5421 Change Q5441 Chang...

Page 538: ...place U5201 Remove Shorts Is there a short between Pin 47 and Pins 14 15 of U5201 Replace or resolder necessary components Is RF level at U5201 Pin 32 12 x 25 dBm Are R5221 R5222 R5223 C5221 C5222 C5223 OK Replace U5201 If C5227 is OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U5201 toggle when channel is changed Check programming lines between U0101...

Page 539: ...1 If C5321 and R5321 are OK then replace CR5321 Replace C5322 Replace C5325 NO NO YES YES TX VCO RX VCO Correct Problem Visual check of board OK Check runner between U5201 Pin 2 and U5301 Pin 19 Is RF available If all parts from U5301 Pin 8 to Base of Q5332 are OK replace U5301 If all parts associated with the pins are OK replace Q5332 If all parts from collector of Q5332 to TP5003 are OK Replace ...

Page 540: ...3 6 Troubleshooting Flow Chart for VCO THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 541: ...of the related Controller circuits The PCB component layouts and the Parts Lists in this Chapter show both the Controller and UHF circuit components The UHF schematics and the related PCB and parts list are shown in the tables below Table 4 1 UHF B2 40W Diagrams and Parts Lists PCB 8486250Z02 Main Board Top Side 8486250Z02 Main Board Bottom Side Page 4 3 Page 4 4 SCHEMATICS Power Amplifier 40W FRA...

Page 542: ...4 2 Allocation of Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 543: ... C5407 C5410 C5418 C5488 C5505 C5506 L5401 L5403 Q5471 Q5472 R5401 R5402 R5403 R5405 R5504 R5511 R5512 TP5530 1 16 8 9 U5401 VR5471 3 2 J5401 C5440 C5441 C5442 C5443 C5444 C5445 C5449 C5450 C5455 C5456 C5459 C5465 C5466 C5467 C5468 C5476 C5477 C5487 C5491 C5507 C5521 C5522 L5489 L5490 R5501 R5502 U5502 C5472 C5474 C5475 C5480 C5510 D5471 D5472 L5472 L5473 L5001 L5002 C5210 C5213 C5214 C5215 C5216 ...

Page 544: ... R0409 R0467 C0304 C0305 C0324 C0325 C0341 C0343 C0344 R0323 R0324 R0341 R0344 R0345 R0346 TP0497 28 15 1 4 5 8 U0341 C0141 16 1 8 9 U0141 C0491 C0492 C0497 C0485 R5495 R5497 C5402 C5405 C5409 C5412 C5413 C5414 C5415 C5416 C5479 C5502 C5503 C5504 L5404 L5411 Q5473 R5412 R5422 R5423 R5424 R5425 R5428 R5431 R5482 R5483 R5484 R5492 R5503 R5514 R5523 TP5533 1 17 9 25 U5501 C0301 C0302 C0303 C0331 C035...

Page 545: ...0K R5635 100pF C5632 R5632 47K C5630 0 1uF 100pF C5629 C5631 0 1uF MOSBIAS_3 BIAS_3_UHF_PA_1 TP5538 NU C5493 C5478 1000pF 17nH L5437 57R01 L5421 C5422 100pF L5436 57R01 C5438 0 1uF 100pF C5439 17nH L5438 NU NU C5476 C5449 3 9pF 3 3pF C5491 C5466 13pF C5442 30pF C5441 C5443 6 8pF L5489 4 22nH 4 22nH L5490 NU NU C5487 3 3pF C5444 13pF C5477 C5440 30pF C5445 6 8pF C5467 3 3pF C5450 R5409 100K 9V3 D54...

Page 546: ...29 C5230 2 2uF 2 2uF C5233 0 1uF C5289 39K R5251 VCTRL TP5201 C5242 PRESC CSX 100pF L5231 VCOMOD_UHF_FN_1 IN_5V_RF_REG 2 2uH C5241 100pF 5 A2 4 A3 K1 1 K2 2 K3 3 DATA_UHF_FN_1 6 A1 D5201 C5221 01uF 01uF C5203 R5252 30K VCTRL_UHF_FN_1 01uF C5234 L5201 390nH 62pF C5261 5V 5V 2 2uF C5215 VDDA VDDA U5201 4 57 VDC 19 to 17 dBm Rx 17 to 12 dBm Tx 4 98 VDC 0 VDC Rx 3 09 VDc Rx 2 65 VDC Tx 4 97 VDC 25KHz ...

Page 547: ...9 TX_BASE 16 TX_EMITTER 15 TX_IADJ 1 COLL_RFIN 4 FLIP_IN 20 GND_BUFFERS 11 GND_FLAG 9 17 GND_LOGIC PRESC_OUT RX_BASE 5 RX_EMITTER 6 U5301 50U54 10 13 8 7 12 4 5 Vdc Rx 2 58 Vdc Tx 100pF C5383 39nH C5365 L5362 3 3pF RXSW NU 4 2 Vdc Rx 0 Vdc Tx 10 R5335 PRESC PRESC_UHF_VCO NU NU R5347 0 R5333 10K R5334 0 C5334 51pF NU NU 0 1uF C5308 L5305 390nH C5309 100pF R5305 10 VSF VSF_UHF_VC0 VSF 4 5 Vdc Q5301 ...

Page 548: ...R 4 6 3 1 100K 27pF R5012 C5007 68 R5007 270 TBD L5002 IN NEG R5011 Q5001 FECTRL_1_UHF_FE 1pF C5029 R5020 10 C5060 R5016 C5023 C5054 16pF C5009 8 2pF IF D5003 0 1uF C5034 FECTRL_1 C5004 16pF C5006 Q5003 L5009 10 R5021 R5051 15nH 51 20pF C5003 330 R5002 C5013 3300pF 0 R5052 270nH R5054 RXIN L5003 330pF C5012 C5027 1pF R5018 R5053 R5003 4 7K R5013 150 R5009 C5028 100pF C5015 R5055 9V3_UHF_FE IF_UHF_...

Page 549: ... CFWC455G Y3101 1 2 R 1 7 44 395MHz GND 2 GND1 4 C3131 1pF NU 0 1uF C3145 5V_VHF_IF_1 IFIN_VHF_IF_1 IF 330 R3116 10K R3134 0 1 u F C3144 18pF C3114 10K R3155 R3151 VDD 7 VSS NU 1 2K U3111 4 MC74HC4066 12 CNTL 14 CNTL 5 4 3 VDD 14 VSS 7 U3115 2 MC74HC4066 0 1 u F C3104 C3135 33pF 12 CNTL 11 14 VDD 7 VSS 7 U3115 4 MC74HC4066 MC74HC4066 CNTL 5 4 3 VDD 14 VSS 3 3 K U3111 2 R3145 0 1 u F C3140 3 9 0 R3...

Page 550: ... C0495 2113743L09 470pF C0496 2113743L09 470pF C0497 2113743L09 470pF C0499 2113743L09 470pF Circuit Ref Motorola Part No Description C0501 2113741F49 10nF C0502 2113741F17 470pF C0503 2113741F17 470pF C0504 2113741F17 470pF C0505 2113741F17 470pF C0506 2113741F17 470pF C0508 2113741F17 470pF C0509 2113741F17 470pF C0510 2113741F17 470pF C0511 2113741F17 470pF C0512 2113741F17 470pF C0513 2113741F...

Page 551: ...2113743E20 0 1uF C5439 2111078B42 100pF C5440 2111078B29 33pF C5441 2111078B29 33pF C5447 2113740F42 43pF C5448 2180464E62 9pF C5449 2111078B03 3 9pF C5450 2111078B01 3 3pF C5457 2113740A42 36pF C5458 2113740A18 4 3pF C5459 2113740A55 100pF C5466 2111078B09 6 8pF C5467 2111078B09 6 8pF C5469 2113740A55 100pF C5472 2111078B27 30pF C5473 2113740F51 100pF C5474 2113740F18 4 3pF C5475 2113740F10 2pF C...

Page 552: ...0662057A73 10K R0175 0662057A73 10K R0176 0662057A84 30K R0177 0662057A65 4 7K R0178 0662057A89 47K R0179 0662057A89 47K R0181 0662057A65 4 7K R0182 0662057A89 47K R0183 0662057A65 4 7K Circuit Ref Motorola Part No Description R0184 0662057A89 47K R0185 0662057A65 4 7K R0186 0662057A89 47K R0201 0662057A25 100 R0202 0662057A43 560 R0203 0662057A25 100 R0204 0662057A43 560 R0205 0662057A73 10K R020...

Page 553: ...2057A32 200 R5408 0662057A80 20K R5409 0662057A97 100K R5412 0662057A56 2K R5415 0662057A18 51 R5416 0662057A18 51 R5422 0611079A69 620 R5423 0611079A69 620 R5424 0611079A69 620 R5425 0611079A69 620 R5428 0662057A55 1 8K R5457 0683962T51 120 Circuit Ref Motorola Part No Description R5473 0662057A64 4 3K R5474 0662057A97 100K R5475 0662057B47 0 R5480 0662057A73 10K R5481 0662057C44 51 R5482 0662057...

Page 554: ...4 14 UHF Band 2 25 40W PCB Schematics Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 555: ...anual No 6804112J18 Kindly complete the Service Manual Feedback Form on the next page to help us ensure that you receive the most accurate and complete information Fax to 6 04 6124944 The Technical Publications Coordinator Media and Communications R D Department Motorola Penang Your Details Name Contact Person Company Name Address Telephone No Fax No Email Address How would you like to receive the...

Page 556: ...ic equipment o very much so o generally yes o to some extent o no 4 We would appreciate any corrections or recommendations for improving this manual Please include the specific page number s of the diagram or procedure in question 5 General comments suggestions Manual No 6804112J18 Fax to 6 04 6124944 The Technical Publications Coordinator Media and Communications R D Department Motorola Penang Co...

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