Motorola GP328 Plus Service Manual Download Page 194

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5D-32

Troubleshooting charts

Bad SINAD

Bad 20dB Quieting

No Recovered Audio

START

Audio at pin 27

of U301?

Check Controller

Yes

Spray of inject 1st IF into

XTAL Filter

IF Freq: 45.1MHz

Audio heard?

Yes

Check 2nd LO Control

Voltage at C363

VCO locked?

Yes

16.8 MHz

check at pin 22

U301?

Activity on

U301 sel pin?

Check FGU

Yes

Check Q320 bias cir-

cuitry for faults.

Rotate Freq. Knob

Check controller.

Before replacing U301, check 2nd VCO

Q320. Check VCO O/P level, C351,

C352.

Yes

Troubleshooting Flow Chart for Receiver (Sheet 1 of 2)

Summary of Contents for GP328 Plus

Page 1: ...GP328 Plus GP338 Plus GP338 XLS Portable Radios Detailed Service Manual 6804112J28 G December 2004 ...

Page 2: ...e 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 implica tion estoppel or otherwise any license under the cop...

Page 3: ... 2000 2001 2002 2003 2004 by Motorola Inc Motorola Technology Sdn Bhd Co No 455657 H Plot 2 Bayan Lepas Technoplex Industrial Park Mukim 12 S W D 11900 Penang Malaysia Printed in Malaysia December 2004 ...

Page 4: ......

Page 5: ... UHF Band 1 UHF Band 2 and 330MHz sections Mar 2002 6804112J28 D Document History Section added June 2003 Changed to Safety Information Feb 2002 Section 1 Introduction Updated CGISS Indirect Business Customer Help Desk information Section 5A 5B and 5C Model Chart Test Specs Added 4 Channel information to VHF Band UHF Band 1 and UHF Band 2 sections 6804112J28 E Added GP338 XLS model Changed to late...

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

Page 7: ...ntial margins of protection All Motorola two way radios are designed manufactured and tested to ensure they meet government established RF exposure levels In addition manufacturers also recommend specific operating instructions to users of two way radios These instructions are important because they inform users about RF energy exposure and provide simple procedures on how to control it Please ref...

Page 8: ...e 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 Radiofrequency Elec tromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz 1999 Australian Communications Authority Rad...

Page 9: ...IEEE and ICNIRP RF exposure guidelines For a list of Motorola approved accessories visit the following website which lists approved accessories for your radio model http ap cgiss motorola com AAD index html Additional Information For additional information on exposure requirements or other training information visit http www motorola com rfhealth Electromagnetic Interference Compatibility NOTE Nea...

Page 10: ...ver an air bag or in the air bag deployment area Air bags inflate with great force If a portable radio is placed in the air bag deployment area and the air bag inflates the radio may be propelled with great force and cause serious injury to occupants of the vehicle Potentially Explosive Atmospheres Explosive atmospheres refers to hazard classified locations that may contain hazardous gas vapors or...

Page 11: ...UL CSA CENELEC Radios will not be upgraded to this capability and labeled once they have been shipped to the field Antennas Do not use any portable radio that has a damaged antenna If a damaged antenna comes into contact with your skin a minor burn can result Batteries All batteries can cause property damage and or bodily injury such as burns if a conductive material such as jewelry keys or beaded...

Page 12: ... approved Accessories and or options that can be used with that portable radio unit Using a non Motorola intrinsically safe battery and or accessory with the Motorola approved radio unit will void the intrinsically safe approval of that radio unit Do not replace or change accessories in a hazardous atmosphere Contact sparking may occur while installing or removing accessories and cause an explosio...

Page 13: ...ation 1 0 Overview 4 1 2 0 Radio Power Distribution 4 1 3 0 Controller Board 4 2 3 1 General 4 2 3 2 Digital Architecture 4 3 3 3 Keypad 4 5 3 4 Troubleshooting Chart 4 6 3 5 Controller Board Diagrams 4 7 Controller Board Top View PCB No 8404051G07 G08 4 7 Controller Board Top View PCB No 8404051G07 G08 4 8 Controller Board Top View PCB No 8404051G09 4 9 Controller Board Bottom View PCB No 8404051...

Page 14: ...G02 4 29 Controller Parts List for UHF 1 UHF 2 and 330MHz for 8404056G01 G02 4 31 Section 5A Model Chart and Test Specifications 136 174 Mhz 1 0 Model Chart 5A 1 2 0 Specifications for GP328 Plus 5A 2 3 0 Specifications for GP338 Plus GP338 XLS 5A 3 4 0 Transmitter 5A 4 4 1 General 5A 4 5 0 Receiver 5A 6 5 1 Receiver Front End 5A 6 5 2 Receiver Back End 5A 7 5 3 Automatic Gain Control Circuit 5A 8...

Page 15: ... 5B 6 5 1 Receiver Front End 5B 6 5 2 Receiver Back End 5B 7 5 3 Automatic Gain Control Circuit 5B 8 6 0 Frequency Generation Circuitry 5B 9 6 1 Synthesizer 5B 10 6 2 VCO Voltage Controlled Oscillator 5B 11 7 0 Notes For All Schematics and Circuit Boards 5B 13 8 0 Circuit Board Schematic Diagrams and Parts List 5B 15 UHF 403 470MHz Main Board Top Side PCB No 8404077G05 G06 G07 5B 15 UHF 403 470MHz...

Page 16: ...Top Side PCB No 8404102G03 G04 G05 5C 15 UHF Band 2 450 527MHz Main Board Bottom Side PCB No 8404102G03 G04 G05 5C 16 UHF Band 2 450 527MHz Main Board Top Side PCB No 8404102G07 5C 17 UHF Band 2 450 527MHz Main Board Bottom Side PCB No 8404102G07 5C 18 UHF Band 2 Controls And Switches Schematic Diagram sheet 1 of 2 UHF Band 2 Controls And Switches Schematic Diagram sheet 2 of 2 5C 19 UHF Band 2 Co...

Page 17: ...6 5D 18 330 400MHz Controls And Switches Schematic Diagram sheet 1 of 2 5D 19 330 400MHz Controls And Switches Schematic Diagram sheet 2 of 2 5D 20 330 400MHz Controls And Switches Schematic Diagram sheet 2 of 2 for 8404101G06 PCB 5D 21 330 400MHz Receiver Front End Schematic Diagram 5D 22 330 400MHz Receiver Back End Schematic Diagram 5D 23 330 400MHz Synthesizer Schematic Diagram 5D 24 330 400MH...

Page 18: ...iversal Connector Flex 6 3 3 1 GP328 Plus 6 3 3 2 GP338 Plus GP338 XLS 6 4 4 0 Schematic for Universal Connector Flex 6 5 4 1 GP328 Plus 6 5 4 2 GP338 Plus GP338 XLS 6 5 5 0 Parts List for Universal Connector Flex 6 6 5 1 GP328 Plus 6 6 5 2 GP338 Plus GP338 XLS 6 6 ...

Page 19: ...owing notes 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...

Page 20: ...rts 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 should be...

Page 21: ...l readout soldering station incl 1 64 micropoint tip Illuminated magnifying glass with lens attachment For 0180382A31 portable desoldering unit 0180386A82 6684253C72 6680384A98 1010041A86 1080370B43 Anti static grounding kit Straight prober Brush Solder RMA type 63 37 0 020 diameter 1 lb spool RMA liquid flux Used during all radio assembly and disassem bly procedures R 1070A or R 1319A Shields and...

Page 22: ...2 2 Recommended Test Tools THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 23: ...AM Test Failure Retest radio by turning it off and turning it on again If message reoccurs replace RAM U405 ROM CS ERROR ROM Checksum is wrong Reprogram FLASH Memory then retest If message reoccurs replace ROM U406 EEPRM HW ERROR Codeplug structure mismatch non existence of codeplug Reprogram codeplug with correct version and retest radio If message reoccurs replace EEPROM U407 EEPRM CS ERROR Code...

Page 24: ...3 2 Error Codes THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 25: ...croprocessor Data is then sent to ASFIC_CMP to turn on GCB4 DAC GCB4 will take over the momentary on path within 12ms SWB will continue to support the whole board until the radio is turned off Radio will be turned off on two conditions 1 MECH_SWB turned off 2 Low battery Figure 4 1 DC Power Distribution Block Diagram Control On Off Switch SWB Fuse Low Battery Detect Ant SW PCIC ALC PA Driver LI Io...

Page 26: ...consists of a special Motorola microcontroller HC11FL0 The audio power amplifier Audio PA and audio signalling filter companding IC ASFIC_CMP form the backbone of the audio signalling architecture Figure 4 2 Controller Block Diagram External Microphone Internal Microphone External Speaker Internal Speaker SCI to Side Connector Audio PA Audio Signalling Architecture To Synthesizer Mod Out 16 8 MHz ...

Page 27: ...and PI6 PI7 form the crystal oscillator circuit Clock frequency of 38 4kHz from a crystal oscillator provides the reference signal In the processor the frequency is divided down to 1Hz As the RTC module is powered separately from the processor Vdd the RTC is kept alive through the ModB Vstby pin when the radio is switched off A small button Lithium Ion battery continues to feed the RTC when the pr...

Page 28: ...tion Circuit Operation Radio On Vdd supply voltage via CR411 Radio Off Vdd turned off Q416 gate is pulled low by R462 Q416 is switched on U410 supplies 3 2V to ModB Vstby Primary battery removed Vdd turned off Q416 gate is pulled low by R462 Q416 is switched on Li Ion battery provides 3 2V to ModB Vstby Flash Mode Boot_Ctrl line pull low ModA ModB goes low Processor in boot strap mode Flashing ena...

Page 29: ...will send a message to the microprocessor through the output KEY_INT telling it that a key has been pressed The microprocessor will then sample the Analog to Digital voltages at the keypad row and keypad column and map it with the table so that the key being pressed can be identified Once the key has been identified the message that corresponds to the key will show up at the display Figure 4 4 Key...

Page 30: ...troller Board 3 4 Troubleshooting Chart Figure 4 5 Keypad Board Troubleshooting Chart Display Keypad LED End Disconnect and reconnect 18 pin flex Disconnect and reconnect 40 pin flex ON OFF OFF ON IF STILL OFF ...

Page 31: ...5 C707 C709 C712 C717 C719 C724 C408 C409 C410 C411 C414 C422 C430 C451 C479 R421 R425 R436 R445 R471 R475 C416 C419 C420 C421 C444 R400 R413 R434 R435 VR445 VR446 VR447 VR448 VR449 VR450 VR432 VR433 C716 C718 C721 C722 C725 C727 C728 L400 C441 C443 C445 C471 C472 C473 C490 C491 C492 C493 C494 C495 C496 C497 L401 R477 TP401 TP402 TP405 TP406 TP410 TP415 C423 R428 R432 R450 C429 R408 R478 R492 R701...

Page 32: ...U409 C440 R498 R499 11 1 20 10 U420 1 37 25 13 U404 C480 L410 L411 C415 C424 C442 C475 C476 C452 4 3 Q410 1 4 5 8 U407 Q403 CR440 CR412 4 3 Q405 CR413 RT400 4 3 Q417 C403 Q400 4 5 8 U400 40 1 J400 22 20 J403 1 21 SH400 Controller Board Top View PCB No 8404051G07 G08 ...

Page 33: ... C712 C713 C714 C715 C716 C717 C718 C719 C720 C721 C722 C723 C724 C725 C726 C727 C728 C729 C730 L400 L401 R400 R406 R408 R409 R410 R411 R413 R414 R415 R416 R418 R421 R423 R424 R425 R427 R428 R429 R431 R432 R434 R435 R436 R437 R445 R447 R448 R449 R450 R451 R452 R453 R454 R455 R456 R457 R460 R463 R471 R472 R473 R475 R476 R477 R478 R481 R492 R701 R702 TP401 TP402 TP405 TP406 TP410 TP415 22 21 8 7 1 U...

Page 34: ...2 C733 C734 CR412 CR413 CR440 40 1 J400 22 20 1 21 J403 L410 L411 Q400 Q403 4 3 Q405 4 3 Q410 4 3 Q417 R498 R499 RT400 SH400 4 5 8 U400 1 37 25 13 U404 32 17 16 1 U406 1 4 5 8 U407 1 76 51 26 U409 11 1 20 10 U420 Controller Board Bottom View PCB No 8404051G09 ...

Page 35: ...L LSIO MECH_SWB MISO MODIN OFF_BATT_DATA_OUT RED_LED RESET RX_AUD_RTN SQ_DET SWB SYN AUDIO AUDIO_PA_ENA BATT_CODE BATT_DATA_IN CHACT CLK CSX DACRX DATA DEMOD EE_CS EXT_MIC EXT_SPKR_SEL F1200 FLAT_RX_SND FLAT_TX_RTN 16 8MHz 4V_3 3V 5V 16 8MHz BATT_CODE DACRX DEMOD GREEN_LED RED_LED MODIN ASFIC UNSWB CLK CSX DATA SWB RESET N U N U LVZIF_SEL VS_CS Vddd XA18 RAM_CS R_W FLASH_EN FLASH_OE LCD_SEL LVZIF_...

Page 36: ...1uF TP410 1 INT_MIC EXT_MIC 16 8MHz RED_LED NU C419 SYN F1200 0 1uF C416 3 3V Vdda 0 1uF C422 C421 0 1uF C420 01uF 0 47K R400 R413 5V DATA CLK CSX CHACT SQ_DET LSIO HSIO EXT_SPKR_SEL AUDIO_PA_ENA GREEN_LED EEPROM 8K x 8 EEPROM 10K R429 8 VCC 4 VSS 3 WP X25650 2 7 U407 1 CS 7 HOLD 6 SCK 5 SI 2 SO 0 1uF C428 C427 470pF EE_CS MISO Vddd 0 1uF C401 1 TP406 SWB 01uF C400 ERROR 5 FEEDBACK 7 GND 4 INPUT 8...

Page 37: ...5_ADDR5 24 PF6_ADDR6 23 PF7_ADDR7 22 PFO_ADDR0 29 PG0_XA13 6 66 PE1_AN1 65 PE2_AN2 64 PE3_AN3 63 PE4_AN4 62 PE5_AN5 61 PE6_AN6 60 PE7_AN7 PF1_ADDR1 28 PD0_RXD 97 PD1_TXD 98 PD2_MISO 99 PD3_MOSI 100 PD4_SCK 1 PD5_SS 2 3 PD6_LVIN 67 PE0_AN0 PC0_DATA0 30 PC1_DATA1 31 PC2_DATA2 32 PC3_DATA3 33 PC4_DATA4 34 PC5_DATA5 35 PC6_DATA6 36 PC7_DATA7 37 PB1_ADDR9 10 PB2_ADDR10 11 PB3_ADDR11 9 PB4_ADDR12 21 PB5...

Page 38: ...2 2 A13 26 A14 1 A2 8 A3 7 A4 6 A5 5 A0 10 A1 9 A10 21 0 1uF C429 R410 100K FLASH_OE 0 R492 R408 NU XA18 FLASH_EN 2311049A59 6V R428 2 2 10uF C424 Vddd 10K R478 AT49HLV010 U406 0 R702 FLASH ROM GND 24 VCC 8 D3 25 D4 26 D5 27 D6 28 D7 29 EN_CE 30 EN_OE 32 EN_WE 7 A5 15 A6 14 A7 13 A8 3 A9 2 D0 21 D1 22 D2 23 A14 5 A15 11 A16 10 A17 6 9 A18 A2 18 A3 17 A4 16 A0 20 A1 19 A10 31 A11 1 A12 12 A13 4 XA1...

Page 39: ...OOT_CTRL SCI_RX SCI_TX RSSI MMQA5V6T1 4805656W08 VR432 5 6V 1W 68 R450 C471 470pF 470pF C473 470pF C472 OPT_SEL2 SWB OPT_SEL1 MMBZ5240B 4880140L15 x 5pcs 10V VR447 10V VR449 10V VR445 VR446 10V VR448 10V 0909059E04 20 PIN CONN J403 4880140L15 MMBZ5240B 470pF C495 10V VR450 C496 470pF C494 470pF 470pF C497 4805656W08 MMQA5V6T1 VR433 5 6V 470pF C490 C492 470pF C493 470pF 470pF C491 1K R477 EXT_SPK I...

Page 40: ... 2113743L09 470 pF 10 C727 2113743L09 470 pF 10 C728 2113743L09 470 pF 10 C729 2113743L09 470 pF 10 C730 2113743L09 470 pF 10 C731 2113743L09 470 pF 10 C732 NOT PLACED C733 NOT PLACED C734 NOT PLACED CR412 4802245J62 Diode Schottky CR413 4802245J62 Diode Schottky CR440 4813833C02 Dual Diode Common Cath ode J400 0902042P03 40 Pins Connector J403 0909059E04 20 Pins Connector L400 2462587Q42 390 nH 1...

Page 41: ...F 5 C724 2113743N50 100 pF 5 C725 NOT PLACED C726 2113743N50 100 pF 5 C727 2113743N50 100 pF 5 C728 2113743N50 100 pF 5 C729 2113743N50 100 pF 5 C730 2113743N50 100 pF 5 C731 NOT PLACED C732 2113743N50 100 pF 5 C733 NOT PLACED C734 NOT PLACED CR412 4802245J62 Diode Schottky CR413 4802245J62 Diode Schottky CR440 4813833C02 Dual Diode Common Cath ode J400 0902042P03 40 Pins Connector J403 0909059E04...

Page 42: ...0130800 O D601 M604 M605 M607 M608 R620 D604 M610 M613 R618 D603 M616 M619 R622 TP402 TP406 TP410 D602 M606 M609 R621 D605 M611 M612 M614 M615 R619 D606 M617 M618 M620 M621 R623 TP401 TP405 TP415 Controller Board Top View PCB No 8404056G01 ...

Page 43: ...0 R413 R471 R481 C409 C479 C408 R425 13 25 37 1 U404 C411 C414 C476 C405 C410 C443 C440 C442 C452 C475 R475 R473 VR446 VR448 VR449 VR450 C444 C445 C430 C415 C451 L400 L401 Q417 3 4 R447 R454 R455 R436 R456 R421 R435 R434 C425 C426 C449 C421 U409 26 51 76 1 C434 C435 C480 C423 C730 C436 C437 3 FL401 Q400 Q416 Q405 3 4 R416 R462 R420 R426 R460 R461 C400 C401 C402 C403 C406 CR411 CR412 CR440 Q403 R40...

Page 44: ...603 D604 D605 D606 M604 M605 M606 M607 M608 M609 M610 M611 M612 M613 M614 M615 M616 M617 M618 M619 M620 M621 R618 R619 R620 R621 R622 R623 TP401 TP402 TP405 TP406 TP410 TP415 Controller Board Top View PCB No 8404056G02 ...

Page 45: ... C435 R460 R461 R462 C480 C730 Q416 26 C415 C430 C451 4 3 Q417 R421 R434 R436 R455 25 13 U404 C416 C419 C420 C421 C422 R400 R413 C408 C409 C450 C472 C479 C481 4 3 Q410 R425 R471 R481 1 37 C447 C448 C475 C476 R423 R424 R431 R472 R498 R499 11 1 20 10 U420 C405 C410 C411 C414 C442 C443 R473 R475 VR446 VR448 VR449 VR432 VR433 VR445 VR450 C440 C444 C452 L400 L401 R435 R450 VR447 C445 CR440 Q403 R447 R4...

Page 46: ...TRL EXT_MIC EXT_SPKR_SEL FLAT_RX_SND INT_MIC OPT_SEL1 OPT_SEL2 RSSI J400 38 J400 9 C727 100pF 100pF C708 C724 100pF J400 14 J400 39 J400 41 J400 1 J400 25 C716 100pF 100pF C711 C709 100pF C721 J400 34 J400 35 100pF J400 36 J400 13 C723 100pF 100pF C722 D3 D4 D5 D6 D7 FLASH_EN FLASH_OE RAM_CS RESET R_W Vddd XA18 J400 37 A13 A14 A15 A16 A17 A2 A3 A4 A5 A6 A7 A8 A9 D0 D1 D2 J400 20 A0 A1 A10 A11 A12 ...

Page 47: ...VDDCP 32 VDDD 33 VDDDAC 11 VDDRC 45 VDDSYN 27 VOX 7 39 RXSND 12 SQCAP SQDET 17 SQIN 9 SYN 28 TXRTN 36 TXSND 44 UIO 10 LSIO 18 MICEXT 48 MICINT 46 MOD 40 NC 26 PLCAP 8 PLCAP2 25 43 RXRTN GCB5 38 GNDA 3 GNDD 31 30 GNDDO GNDRC 47 GNDSYN 23 HSIO 19 LCAP 24 DATA 22 DISC 2 F1200 29 GCB0 15 GCB1 14 GCB2 13 GCB3 35 GCB4 37 42 AUXTN CHACT 16 CLK 21 CLK168 34 CSX 20 DACG 6 DACR 5 DACU 4 Q403 30C53 U404 AUDI...

Page 48: ...TA3 34 PC4_DATA4 35 PC5_DATA5 36 PC6_DATA6 37 PC7_DATA7 97 PD0_RXD 98 PB2_ADDR10 9 PB3_ADDR11 21 PB4_ADDR12 15 PB5_ADDR13 8 PB6_ADDR14 7 PB7_ADDR15 14 PBO_ADDR8 30 PC0_DATA0 31 PA1_IC2 81 PA2_IC1 82 PA3_IC4_OC5_OC1 83 PA4_OC4_OC1 84 PA5_OC3_OC1 PA6_OC2_OC1 85 86 PA7_PA1_OC1 10 PB1_ADDR9 11 AVSS 89 ECLK 90 EXTAL 96 IRQ LVOUT 95 MODA_LIR 58 57 MODB_VSTBY 79 PA0_IC3 80 U409 MC68HC11FL0 59 AVDD 70 C43...

Page 49: ...OE R428 2 2 6V 2311049A59 C424 10uF 0 1uF C429 R478 10K Vddd A10 A0 A1 A11 A13 A3 A5 A7 A9 A8 A6 A4 A2 A17 A16 A15 A14 A12 R_W RAM_CS NU 0 R492 R408 100K XA18 FLASH_EN 5102463J59 AT49HLV010 U406 VCC 8 EN_CE 30 EN_OE 32 EN_WE 7 20 FLASH ROM D7 29 A9 2 D0 21 D1 22 D2 23 D3 25 D4 26 D5 27 D6 28 A2 18 A3 17 A4 16 A5 15 A6 14 A7 13 A8 3 A10 31 1 A0 A1 19 9 A18 A11 A12 12 A13 4 A14 5 A15 11 A16 10 A17 6...

Page 50: ...0pF C444 C445 100pF BOOT_CTRL FLAT_RX_SND SCI_RX SCI_TX RSSI R473 10 C442 0 1uF OPT_SEL2 OPT_SEL1 1W 100pF C473 68 R450 100pF C471 100pF C472 SWB 100pF C496 C497 100pF 100pF C495 C494 100pF 10V VR450 MMQA5V6T1 4805656W08 VR433 5 6V 4880140L15 MMBZ5240B C491 100pF C493 100pF 100pF C492 C490 100pF VR445 10V VR448 10V 10V VR447 10V VR449 VR446 10V 20 PIN CONN J403 4880140L15 x 5pcs 0909059E04 GND RSS...

Page 51: ...4 IN 1 OUT1 2 OUT2 BK1005HM471 E640 R609 43K J702 7 R613 1MEG BK1005HM471 E642 100pF C616 79U01 D606 1K R618 1K R619 100K R722 2 OUT2 100K R721 SWITCH M606 3 GND 4 IN 1 OUT1 R647 3K J702 2 J702 9 J702 15 79U01 D604 Q601 PNP D601 79U01 D605 79U01 79U01 D602 J702 1 J702 11 D603 79U01 J702 10 J702 13 4 3 1 2 5 OUT1 2 OUT2 LMC7211 U602 M615 SWITCH FN03 GND 4 IN 1 E400 C613 100pF FN0 3 GND 4 IN OUT1 2 ...

Page 52: ...K FN0 M614 SWITCH 51K R611 E637 BK1005HM471 E702 BK1005HM471 E638 BK1005HM471 E407 130K R606 1 OUT2 2 M612 SWITCH GND 3 IN 4 OUT1 BK1005HM471 E703 E704 BK1005HM471 J702 18 OUT2 2 R612 560K M620 SWITCH GND 3 IN 4 OUT1 1 BK1005HM471 E639 FN0 43K R605 J702 14 100pF C609 100pF FN0 C611 J702 8 J702 6 100pF C612 J702 17 43K R609 M606 SWITCH GND 3 IN 4 OUT1 1 OUT2 2 3K R647 U602 LMC7211 1 2 5 GND 3 IN 4 ...

Page 53: ...0 pF 10 C726 2113743L09 470 pF 10 C727 2113743L09 470 pF 10 C728 2113743L09 470 pF 10 C729 2113743L09 470 pF 10 C730 2113743L09 470 pF 10 C731 2113743L09 470 pF 10 C751 2113743L09 470 pF 10 CR411 4802245J62 Diode Schottky CR412 4802245J62 Diode Schottky Circuit Ref Motorola Part No Description CR413 4802245J62 Diode Schottky CR440 4813833C02 Dual Diode Common Cath ode D601 4880479U01 LED D602 4880...

Page 54: ...1000 5 R619 0662057M74 1000 5 R620 0662057M74 1000 5 R621 0662057M74 1000 5 R622 0662057M74 1000 5 R623 0662057M74 1000 5 R632 0662057N23 100 k 5 R633 0662057N23 100 k 5 R646 0662057N23 100 k 5 R647 0662057M85 3000 5 R648 0662057N23 100 k 5 R649 0662057N15 47 k 5 R721 NOT PLACED R722 NOT PLACED RT400 0680590Z01 Thermistor 33k TP401 NOT PLACED TP402 NOT PLACED TP405 NOT PLACED TP406 NOT PLACED TP41...

Page 55: ...726 2113743N50 100 pF 5 C727 2113743N50 100 pF 5 C728 2113743N50 100 pF 5 C729 2113743N50 100 pF 5 C730 2113743N50 100 pF 5 C731 2113743N50 100 pF 5 C750 2113743N50 100 pF 5 CR411 4802245J62 Diode Schottky CR412 4802245J62 Diode Schottky Circuit Ref Motorola Part No Description CR413 4802245J62 Diode Schottky CR440 4813833C02 Dual Diode Common Cath ode D601 4880479U01 LED D602 4880479U01 LED D603 ...

Page 56: ... 5 R619 0662057M74 1000 5 R620 0662057M74 1000 5 R621 0662057M74 1000 5 R622 0662057M74 1000 5 R623 0662057M74 1000 5 R632 0662057N23 100 k 5 R633 0662057N23 100 k 5 R646 0662057N23 100 k 5 R647 0662057M85 3000 5 R648 0662057N23 100 k 5 R649 0662057N15 47 k 5 R721 NOT PLACED R722 NOT PLACED RT400 0680590Z01 Thermistor 33k TP401 NOT PLACED TP402 NOT PLACED TP405 NOT PLACED TP406 NOT PLACED TP410 NO...

Page 57: ...apa 136 174 MHz 5W 128CH X PMUD1771_ GP338 XLS Tanapa 136 174 MHz 5W 160CH X PMHD4021_ GP328 Plus B C Kit 136 174 MHz 5W 4CH X JMHD4005_ GP328 Plus B C Kit 136 174 MHz 5W 16CH X PMHD4006_ GP338 Plus B C Kit 136 174 MHz 5W 128CH X PMHD4014_ GP338 XLS B C Kit 136 174 MHz 5W 160CH X PMHD4020_ GP328 Plus Front Housing Kit 4CH X PMHD4000_ GP328 Plus Front Housing Kit 16CH X PMHD4001_ GP338 Plus Front H...

Page 58: ...10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT3801 VHF RF Output Li Ion 7 5V Low 1W High 5W Frequency 136 174 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 Spurs Harmonics 36 d...

Page 59: ...hrs High Power 7 hrs 10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT3801 VHF RF Output Li Ion 7 5V Low 1W High 5W Frequency 136 174 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025...

Page 60: ... of 7 3V This RF power amplifier is capable of supplying an output power of 0 3W pin 6 and 7 with an input signal of 2mW 3dBm pin16 The current drain would typically be 130mA while operating in the frequency range of 136 174MHz The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0 3W The current drain would typically be 1800mA while operating in the frequency...

Page 61: ...f L3538 and C3537 is used to match the antenna s impedance to the harmonic filter This will optimize the performance of the transmitter and receiver into an antenna 4 1 5 Power Control Integrated Circuit PCIC The transmitter uses the Power Control IC PCIC U3502 to control the power output of the radio by maintaining the radio current drain The current to the final stage of the power module is supp...

Page 62: ...ed by the microprocessor Depending on the carrier frequency the DACRx will supply the tuned voltage to the varactor diodes in the filter Wideband operation of the filter is achieved by shifting the bandpass filter across the band The output of the bandpass filter is coupled to the RF amplifier transistor Q3302 via C3306 After being amplified by the RF amplifier the RF signal is further filtered by...

Page 63: ...icroprocessor Additional filtering once externally provided by the conventional ceramic filters is replaced by internal filters in the IF module U3220 The IF IC uses a type of direct conversion process whereby the externally generated second LO frequency is divided by two in U3220 so that it is very close to the first IF frequency The IF IC U3220 synthesizes the second LO and phase locks the VCO t...

Page 64: ...1 at certain RSSI levels In order to turn on Q3301 the voltage across R3305 must be greater or equal to the voltage across R3324 plus the base emitter voltage Vbe present at Q3301 Capacitor C3209 is used to dampen any instability while the AGC is turning on The current flowing into the collector of Q3301 a high current gain NPN transistor will be drawn through the PIN diode to turn it on Maximum c...

Page 65: ...U3801 In addition to the VCO the synthesizer must interface with the logic and ASFIC circuitry Programming for the synthesizer is accomplished through the data clock and chip select lines from the microprocessor A 3 3V dc signal from synthesizer lock detect line indicates to the microprocessor that the synthesizer is locked Transmit modulation from the ASFIC is supplied to pin10 of U3701 Internall...

Page 66: ...ithin the lock range The required frequency is then locked by normal mode charge pump at pin 43 Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier which is made up of C3701 to C3704 and triple diodes D3701 D3702 Two 3 3V square waves 180 deg out of phase are first multiplied by four and then shifted along with regulated 5V to build up 13 5V at pin 47 of ...

Page 67: ... in the synthesizer a resultant CONTROL VOLTAGE is received at the VCO This voltage is a DC voltage typically between 3 5V and 9 5V when the PLL is locked on frequency Figure 5 5 VCO Block Diagram Presc RX TX Matching Network Low Pass Filter Attenuator Pin8 Pin14 Pin10 3701 Pin28 VCC Buffers TX RF Injection U3701 Pin 32 AUX3 U3701 Pin2 Prescaler Out Pin 12 Pin 19 Pin 20 TX RX BS Switching Network ...

Page 68: ...on when PTT is depressed 3 2 volts is applied to U3801 pin 19 This activates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U3801 The RF signal at U3801 pin 10 is injected into the input of the PA module U3501 pin16 This RF signal is the TX RF INJECTION Also in transmit mode the audio signal to be frequency modulated onto the carrier is received through U3701 pin 4...

Page 69: ...gnators are assigned in the following manner 400 500 Series Controller 600 Series Keypad Board 3200 Series IF Circuitry 3300 Series Receiver 3500 Series Transmitter 3700 and 3800 Series Frequency Generation 4 Interconnect Tie Point Legend UNSWB Unswitch Battery Voltage 7 5V SWB Switch Battery Voltage 7 5V R5 Receiver Five Volts CLK Clock Vdda Regulated 3 3 Volts for analog Vddd Regulated 3 3 Volts...

Page 70: ...5A 14 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 71: ...R3310 R3311 R3312 R3313 R3316 SH3303 C3318 C3319 C3320 C3329 C3334 C3335 L3309 L3312 R3317 R3318 R3321 R3322 R3323 SH3302 6 4 3 T3301 6 4 3 T3302 TP3301 C3706 C3710 C3711 C3712 C3713 C3714 C3715 C3721 C3722 C3724 C3741 C3742 C3743 C3744 C3745 C3746 C3752 C3753 C3754 4 3 Q3721 R3701 R3721 R3722 R3723 R3741 R3751 R3752 SH3701 U3711 C3842 C3822 C3824 C3825 C3826 C3828 C3829 C3830 C3832 C3833 C3834 C3...

Page 72: ...C3763 D3761 R3760 R3761 C3735 CR501 L505 R3763 VR439 VR441 VR506 2 3 4 Y3762 3 2 1 B501 VR440 C503 C523 C3336 F501 C3701 C3702 C3703 C3704 C3705 C3707 C3708 C3709 C3725 C3726 C3727 C3731 C3732 C3733 C3734 C3755 C3761 C3762 D3701 D3702 L3701 L3731 R3702 R3703 R3704 R3705 R3726 R3727 R3762 SH3702 1 37 25 13 U3701 C3526 C3569 L3523 R3566 R3571 R3572 R3573 TP3502 C3508 C3509 C3515 C3516 C3560 C3561 C3...

Page 73: ... 4 R501 R502 C3307 C3330 C3331 C3338 C3310 C3314 C3319 C3312 C3306 C3309 C3308 C3327 C3329 C3311 C3313 C3332 C3318 CR3303 D3302 L3305 L3306 L3304 Q3302 R3310 R3321 R3311 R3317 R3313 R3308 R3309 R3312 R3316 R3322 R3323 T3301 3 4 6 C3320 C3334 C3335 L3309 L3312 R3318 SH3302 T3302 3 4 6 C3832 C3842 C3826 C3833 C3834 C3825 C3836 C3830 C3835 C3828 C3829 D3832 D3821 D3831 L3824 L3834 L3832 L3825 L3831 L...

Page 74: ...6 R3762 R3703 R3704 R3727 R3705 SH3702 13 25 37 1 U3701 C3806 C3813 C3821 C3823 C3803 C3815 C3802 C3810 C3811 C3812 C3818 C3827 C3801 C3805 C3808 C3804 C3809 C3816 L3826 L3801 L3811 L3812 L3816 L3809 L3813 Q3801 R3804 R3831 R3801 R3807 R3812 R3818 R3830 R3808 R3816 R3802 R3811 R3806 R3825 R3803 R3826 R3832 R3824 R3805 R3817 R3829 SH3802 U3801 10 20 1 11 4 C 8 C S501 2 C3325 C3326 C3315 C3339 C3316...

Page 75: ...F 470pF C546 470pF C545 C544 470pF C543 NU C541 C542 NU C540 NU NU C539 NU 470pF 470pF C552 C553 16 8MHz 5V DEMOD RSSI LVZIF_SEL RESET CLK CSX DACRx DATA DACRx_1_SW 5V_1_SW 16_8MHz_1_SW CLK_4_SW 16_8MHz_2_SW DATA_5_SW DATA_4_SW 5V_5_SW CSX_2_SW 5V_2_SW CLK_1_SW DATA_2_SW CSX_1_SW 5V_6_SW 5V_4_SW CLK_5_SW CLK_3_SW DACRX_2_SW DATA_1_SW CLK_2_SW 5V_3_SW DATA_3_SW DEMOD_2_SW RESET_1_SW LVZIF_SEL_1_SW ...

Page 76: ...503 2 4 1 3 4 B2 SWI T CH 1 A1 3 A2 2 B1 SWITCH PB504 1000pF C523 1000pF 100pF 100pF C503 Q505 0 47uF C502 100pF 0 47uF 100pF C511 VR501 C513 6 8V6 8V 100pF 100pF R506 47K 2 4 3 47K L505 390nH 390nH 5 1 6 IMX1IM X 1 10V VR439 12V CR501 R502 180 180 01uF C522 01uF B503 1 A1 3 A2 2 B1 4 B2 2 1 SWITCH PB501 SWI T CH 24V F501 24V B504 C514 100pF C512 100pF 100pF 100pF R501 680 680 01uF C520 01u F 01uF...

Page 77: ...13 47K R506 47K DATA NEG POS B501 C505 100pF 6 8V VR506 R505 10K SWITCH A1 1 A2 3 B1 2 B2 4 24V F501 2 1 PB505 3 B1 2 B2 4 PB504 SWITCH A1 1 A2 C523 1000pF C503 100pF 2 4 3 390nH IMX1 5 1 6 L505 10V 12V VR439 CR501 R502 180 C522 B503 01uF A1 1 A2 3 B1 2 B2 4 PB501 SWITCH 2 4 1 3 B504 CR503 100pF 100pF C514 MECH_SWB EMER UNSWB 100pF C512 Vdda SB1 PTT SB2 RTA3 RTA2 RTA0 RTA1 VOL Vdda LI_ION BATT_COD...

Page 78: ...CRx_1_FE R3303 100K C3321 330pF C3322 100pF DACRx 100pF C3323 RX_INJ_1_FE RX_INJ DUMMY D3301 100K R3304 NU C3326 33K R3307 470pF C3338 Q3301 1000pF C3325 220 R3324 NU R3301 68K R3305 C3327 330pF 2 2K R3306 SMBV1032 CR3302 NU RT3301 C3330 100pF 330pF C3329 C3331 100pF R3317 100K Stripline NU C3314 10pF C3315 150pF C3313 L3306 12nH C3316 3 3pF Stripline C3332 39pF 39pF C3317 C3339 10pF 022uF C3318 L...

Page 79: ...SE_VSS 5 RSSI_FLT 4 RSSI_OUT 16 TESTA 8 TESTD 32 VAG 25 VAG_REF MIX_IN 46 24 MLPD_CR 26 PHASE_LOCK 47 PREAMP_OUT 48 PRE_AGC 3 PRE_IN 1 RED_VCC 21 20 GND 10 GOLD_VCC 14 GOLD_VSS 41 GREEN_VCC 43 GREEN_VSS IOUT 15 LIM 31 MIX_BYP 42 19 CLK 18 13 COL DATA 17 28 DEMOD_HF 27 DEMOD_OUT 11 EMIT 6 EXTBS FREF C1M 40 C1P 34 C2M 39 C2P 35 C3M 38 C3P 36 C4M 37 C4P CEX 7 AFC 12 BASE 45 BLUE_VCC 44 BLUE_VSS 22 BR...

Page 80: ...BASE SFCAP SFIN VBPASS NC3 PREIN PVREF REFSEL MODIN NC1 NC2 BIAS2 CCOMP CEX DATA BIAS1 25 WARP 28 SFOUT 44 PD_GND 33 PRE_GND 45 IADAPT 16 INDMULT 43 IOUT LOCK 4 6 DGND 46 ADAPTSW 22 AGND 31 18 17 29 42 37 TEST1 38 TEST2 48 AUX1 1 AUX2 2 AUX3 3 AUX4 15 VMULT1 14 VMULT2 12 VMULT3 11 VMULT4 26 30 21 32 35 27 10 41 MODOUT 39 9 8 CLK 7 19 FREFOUT 40 mgc_comps U3701 VRO 13 23 XTAL1 24 XTAL2 47 VCP PD_VD...

Page 81: ...TTER 6 RX_IADJ 2 RX_OUT 8 50U54 U3801 COLL_RFIN 4 FLIP_IN 20 1000pF C3815 T5 R3832 12K T5_1_VCO NU R3830 R3834 47 220 R3833 1000pF C3832 TRB TRB_1_VCO R3829 0 C3833 4 7pF C3834 56pF L3831 56nH 47K R3835 PRESC L3816 100nH D3832 10K R3836 VSF PRESC_1_VCO 6 8pF C3816 R3816 1K TX_INJ_1_VCO TX_INJ 27pF C3809 L3809 27nH VSF SHIELD SH3802 1 SHIELD SH3801 1 56nH L3821 56pF C3824 15pF C3825 220 R3821 1000p...

Page 82: ...F C3502 L3501 5 6nH RFIN 16 6 RFOUT1 RFOUT2 7 VCNTRL 1 VD1 14 VG1 2 VG2 3 4 GND1 5 GND2 12 GND3 13 GND4 NC1 8 NC2 9 NC3 10 NC4 15 U3501 09Z67 17 EP G2 11 L3519 BEAD 0 1 R3519 C3568 3300pF C3569 022uF 120 R3573 120 R3571 120 R3572 C3528 10pF 12V VR3501 10pF C3525 C3521 220pF 022uF C3526 C3523 120pF L3521 7 66nH 20pF C3524 C3527 NU 23 75nH L3522 D3521 1uH L3523 R3506 L3512 11 03nH C3512 47pF R3507 3...

Page 83: ...3743N26 10 0 pF 5 C3501 2113743L05 330 pF 10 C3502 2113743N38 33 0 pF 5 C3503 2113743N38 33 0 pF 5 Circuit Ref Motorola Part No Description C3504 2113743M08 22000PF 80 20 C3505 2113743N38 33 0 pF 5 C3508 2113743M08 22000PF 80 20 C3509 2113743L05 330 pF 10 C3512 2113740F43 47 pF C3513 2113740F38 30 pF C3514 2113740F47 68 pF C3515 2113743L29 3300 pF 10 C3516 2311049A08 1 uF C3517 2113740F47 68 pF C3...

Page 84: ...7N44 18 nH 5 L3512 2479990B01 11 03 nH L3513 2479990A02 7 66 nH L3515 2479990C03 13 85 nH L3518 NOT PLACED Circuit Ref Motorola Part No Description L3519 2484657R01 Inductor Bead Chip L3521 2479990A02 7 66 nH L3522 2479990E01 23 75 nH L3523 2462587N68 1000 nH 5 L3531 2479990N01 43 67 nH L3532 2479990N01 43 67 nH L3538 2479990M01 30 54 nH L3551 2479990N01 43 67 nH L3552 2479990A02 7 66 nH L3701 246...

Page 85: ...57M01 0 5 R3830 NOT PLACED R3831 0662057M98 10 k 5 R3832 0662057N01 12 k 5 R3833 0662057M58 220 5 R3834 0662057M42 47 5 R3835 0662057N15 47 k 5 R3836 0662057M98 10 k 5 R501 0662057M70 680 5 R502 0662057M56 180 5 R505 0662057M98 10 k 5 R506 0662057N15 47 k 5 R509 0662057M01 0 5 not used in GP328 Plus RT3301 NOT PLACED S501 4080710Z01 Channel Switch Ref 4080710Z09 4080710Z05 Channel Switch used in P...

Page 86: ...5A 30 Circuit Board Schematic Diagrams and Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 87: ...ow Press PTT Q502 2 High Check PB504 Check Q502 2 voltage LED Q502 R501 OK Replace Faulty Component Check Accessories J403 OPT_SEL_1 OPT_SEL_2 Pin 8 9 low Radio could not PTT externally U409 Pin 52 6 low See FGU Troubleshooting chart LED should light up Check MCU PTT NO YES YES No No NO YES YES NO YES YES NO NO YES YES NO NO YES NO YES NO YES YES NO NO YES EXT SPKR EXT PTT INT AUDIO J403 Pin 9 low...

Page 88: ...req 45 1MHz Audio heard B Yes No Check 2nd LO Control Voltage at C3279 VCO locked B Yes 16 8 MHz check at pin 21 U3220 Activity on U3220 sel pin Check FGU No No A A Yes Check Q3270 bias cir cuitry for faults Rotate Freq Knob Check controller Before replacing U3220 check 2nd VCO Q3270 Check VCO O P level C3272 C3273 Yes No Troubleshooting Flow Chart for Receiver Sheet 1 of 2 ...

Page 89: ...s Check RF amp Q3302 Stage Check filter between C3313 T3301 Yes Check T3301 T3302 CR3301 R3321 R3322 R3323 Yes 1st LO O P OK Locked Yes Check FGU Yes Trace IF signal from C3200 to Q3200 Check for bad XTAL filter No Yes Q3200 collec tor OK IF signal present Before replacing U3220 check U3220 voltages trace IF signal path Yes Check for 2 9 VDC Is R5 present Check Q3721 U3701 pin 48 voltages and U247...

Page 90: ...k Pin Diodes 2 Check Harmonic Filter Inspect Repair Tx Out put Network Is Power OK Done Check Drive to Module Is Drive OK Troubleshoot VCO Inspect PA Network Check Power Out of U3501 at Cap C3512 Is Power OK Replace U3501 Is Power OK Replace Q3501 Done Done No Yes Yes No No Yes Low High No Yes Yes No Yes No Troubleshooting Flow Chart for Transmitter ...

Page 91: ...ns 14 15 of U3701 Replace or resolder necessary components Is RF level at U3701 Pin 32 30 dBm Are C3721 C3722 C3723 R3721 R3722 R3723 OK Replace U3701 If R3727 C3726 C3727 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U3701 toggle when channel is changed Check programming lines between U409 and U3701 Pins 7 8 9 Replace U3701 Check uP U409 Trouble...

Page 92: ...n 2 for 3 2V Pin 19 0V AUX 3 Low Change U3801 V ctrl 0V or 13V L3821 L3822 L3823 Open Circuit Change U3801 Change L3821 L3822 L3823 L243 Change U3701 Check for faulty parts or dry joints of L3812 C3806 R3806 R3802 L3801 A A No No Yes Yes Yes No No Yes Yes Yes No Yes No No Yes Yes No No Check R3811 L3811 for dry joint or faulty No Troubleshooting Flow Chart for VCO Yes ...

Page 93: ...28 Plus Tanapa 403 470 MHz 4W 16CH X PMUE1704_ GP338 Plus Tanapa 403 470 MHz 4W 128CH X PMUE1878_ GP338 XLS Tanapa 403 470 MHz 4W 160CH X PMHE4026_ GP328 Plus B C Kit 403 470 MHz 4W 4CH X JMHE4001_ GP328 Plus B C Kit 403 470 MHz 4W 16CH X PMHE4010_ GP338 Plus B C Kit 403 470 MHz 4W 128CH X PMHE4020_ GP338 XLS B C Kit 403 470 MHz 4W 160CH X PMHE4024_ GP328 Plus Front Housing Kit 4CH X PMHE4000_ GP3...

Page 94: ...10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT4844 UHF RF Output Li Ion 7 5V Low 1W High 4W Frequency 403 470 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 Spurs Harmonics 36 d...

Page 95: ...rs High Power 7 hrs 10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT4844 UHF RF Output Li Ion 7 5V Low 1W High 4W Frequency 403 470 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 ...

Page 96: ...of 7 3V This RF power amplifier is capable of supplying an output power of 0 3W pin 6 and 7 with an input signal of 2mW 3dBm pin16 The current drain would typically be 160mA while operating in the frequency range of 403 470MHz The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0 3W The current drain would typically be 1300mA while operating in the frequency ...

Page 97: ...rk which is made up of L116 is used to match the antenna s impedance to the harmonic filter This will optimize the performance of the transmitter and receiver into an antenna 4 1 5 Power Control Integrated Circuit PCIC The transmitter uses the Power Control IC PCIC U102 to regulate the power output of the radio The current to the final stage of the power module is supplied through R101 which provi...

Page 98: ...ssor Depending on the carrier frequency the DACRx will supply the tuned voltage to the varactor diodes in the filter Wideband operation of the filter is achieved by shifting the bandpass filter across the band The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307 After being amplified by the RF amplifier the RF signal is further filtered by a second varactor tun...

Page 99: ...iltering once externally provided by the conventional ceramic filters is replaced by internal filters in the IF module U301 The IF IC uses a type of direct conversion process whereby the externally generated second LO frequency is divided by two in U301 so that it is very close to the first IF frequency The IF IC U301 synthesizes the second LO and phase locks the VCO to track the first IF frequenc...

Page 100: ...5 is an NPN transistor used for switching here Maximum current flowing through the PIN is mainly limited by the resistor R319 Radio signal strength indicator RSSI a voltage signal is used to drive Q315 to saturation hence turning it on RSSI is produced by U301 and is proportional to the gain of the RF amplifier and the input RF signal power to the radio Resistor network at the input to the base of...

Page 101: ...ynthesizer must interface with the logic and ASFIC circuitry Programming for the synthesizer is accomplished through the data clock and chip select lines from the microprocessor A 3 3V dc signal from synthesizer lock detect line indicates to the microprocessor that the synthesizer is locked Transmit modulation from the ASFIC is supplied to pin10 of U201 Internally the audio is digitized by the Fra...

Page 102: ...uency is then locked by normal mode charge pump at pin 43 Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier which is made up of C258 C259 C228 triple diode CR201 and level shifters U210 and U211 Two 3 3V square waves 180 deg out of phase are first shifted to 5V then along with regulated 5V put through arrays of diodes and capacitors to build up 13 3V at...

Page 103: ...ency comparison in the synthesizer a resultant CONTROL VOLTAGE is received at the VCO This voltage is a DC voltage between 3 5V and 9 5V when the PLL is locked on frequency Presc RX TX Matching Network Low Pass Filter Attenuator Pin8 Pin14 Pin10 Level Shifter Network 5V U201 Pin28 VCC Buffers TX RF Injection U201 Pin 32 AUX4 U201 Pin3 AUX3 U201 Pin2 Prescaler Out Pin 12 Pin 19 Pin 20 TX RX BS Swit...

Page 104: ...ic Diagram on page 5B 21 During the transmit condition when PTT is depressed five volts is applied to U241 pin 19 This activates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241 The RF signal at U241 pin 10 is injected into the input of the PA module U101 pin16 This RF signal is the TX RF INJECTION Also in transmit mode the audio signal to be frequency modulated...

Page 105: ...g 3 Reference Designators are assigned in the following manner 100 Series Transmitter 200 Series Frequency Generation 300 Series Receiver 400 500 Series Controller 600 Series Keypad Board 4 Interconnect Tie Point Legend UNSWB Unswitch Battery Voltage 7 5V SWB Switch Battery Voltage 7 5V R5 Receiver Five Volts CLK Clock Vdda Regulated 3 3 Volts for analog Vddd Regulated 3 3 Volts for digital CSX Ch...

Page 106: ...5C 14 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 107: ...RT301 VR300 VR444 C331 C333 CR308 R342 R317 R336 TP202 TP302 C375 C320 C381 C319 C322 L309 L310 R309 R308 R310 R348 SH303 T301 3 4 6 T302 3 4 6 C110 C114 C118 C119 C121 C122 C125 C160 C165 C166 C171 C112 C113 C115 C117 C116 C120 C161 C127 C131 C129 C169 L114 L115 L106 L107 L108 L109 L113 L160 R103 R104 R106 R107 R108 R120 R171 R161 R173 SH101 U101 9 8 16 1 C109 C111 3 2 Q110 1 C101 C141 C102 C104 ...

Page 108: ...0 C138 C151 C170 C174 C123 C126 C133 C128 C135 C150 C152 C134 E101 L112 R102 R329 R109 R130 R131 R132 25 9 17 U102 1 VR439 C241 C246 C255 C281 C295 C372 C252 C242 C243 C250 C244 C245 C254 C371 C373 C378 CR241 CR242 CR243 CR251 L241 L281 L242 L251 Q310 R330 R332 R110 R112 R111 R242 R241 R251 R244 R245 R252 R254 R331 R349 SH242 U241 10 20 1 11 C201 C264 C218 C223 C224 C231 C296 C298 C202 C204 C206 C...

Page 109: ... C319 C322 C381 L309 L310 R309 R308 R310 R348 SH303 T301 3 4 6 T302 3 4 6 TP202 TP302 C331 C333 C396 CR308 R336 R342 R317 C109 C110 C114 C118 C119 C121 C122 C125 C160 C165 C166 C171 C111 C112 C113 C115 C116 C117 C120 C161 C127 C131 C129 C169 L115 L106 L107 L108 L109 L114 L113 L160 3 2 Q110 1 R103 R104 R174 R106 R107 R108 R120 R171 R161 R173 R175 R176 SH101 1 16 8 9 U101 C521 PB501 VR440 C362 C364 ...

Page 110: ... CR306 F501 SH304 B501 C277 C279 C278 L505 U248 VR506 CR501 C130 C138C151 C170 C174 C123 C126 C133 C128 C135 C150 C152 C134 E101 L112 R109 R132 R136 R329 25 9 17 U102 1 VR439 C241 C246 C255 C281 C295 C371 C372 C373 C378 C242 C243 C250 C244 C245 C252 C254 CR241 CR242 CR243 CR251 R349 L241 L281 L242 L251 Q310 R330 R331 R332 R110 R112 R111 R242 R241 R251 R244 R245 R252 R254 SH242 U241 10 20 1 11 C201...

Page 111: ...552 RX_IN RECEIVER R5 Vdda Vdda RSSI 16 8MHz CLK DACRx DATA DEMOD LVZIF_SEL RX_INJ 5V SWB DATA CSX CLK DACRX DEMOD RSSI LVZIF_SEL 16 8MHz LOCK MODIN R5 SWB Vdda 5V RX_INJ FGU TX_INJ 16 8MHz CLK CSX DATA LOCK MODIN RX_IN TX_INJ UNSWB TRANSMITTER 5V CLK CSX DATA RESET UNSWB RESET 5V B503 B504 LI_ION MECH_SWB 0 47uF C502 4 1 LOW 5 3 HIGH 6 TAB1 7 TAB2 2 S502 SWITCH 0 R507 C522 01uF 6 8V VR441 C505 10...

Page 112: ...6 J200 11 J200 8 01uF C523 J200 37 J200 26 2 4 1 3 J200 38 CR503 F501 24V 2 1 VR441 6 8V TRANSMITTER 5V CLK CSX DATA RESET RX_IN TX_INJ UNSWB 680 R501 10K R505 1 A1 3 A2 2 B1 4 B2 L505 390nH SWITCH PB501 CONN_J B501 2 DATA 1 NEG 3 POS 100pF C547 100pF C546 100pF C545 100pF C544 NU C543 100pF C528 12V VR439 NU C542 C540 NU C541 C539 NU NU 0 47uF 100pF C538 C502 100pF C512 01uF C520 100pF C537 NU R5...

Page 113: ...0K R307 R306 100K L306 13 9nH L307 13 9nH C316 3 9pF C313 10pF C311 27nH L305 6 8pF C312 C306 NU NU R303 1K C310 0 1uF Q301 1 3 2 R340 6 8K 2 7 R328 C314 0 1uF 510 12K R305 C309 100pF R304 180nH L304 100pF C321 100pF C315 R5 R342 100K C380 01uF DACRx 2 XFMR T301 4 6 3 1 18 R309 270 270 R310 R308 CR306 3 4 IF 2 1 82pF C322 L310 150nH R317 1K 2 3 CR308 HSMP3820 1 100pF C331 C395 100pF L340 390nH R34...

Page 114: ...GOLD_VCC AFC BASE U301 32D83 8 9 3 1 2 5 4 11 6 10 7 12 16 15 24 21 20 14 19 18 13 17 22 23 48 43 42 46 47 41 38 37 44 40 39 45 32 25 30 29 31 26 27 36 28 33 34 35 0 15uF 15pF C338 C361 01uF RSSI C328 0 1uF R314 3K R5 330 R313 C355 C337 100pF 022uF C356 C326 01uF L314 2 2uH C336 0 1uF Vdd_FILTERED C342 1uF C341 1uF C340 1uF 1uF C339 LVZIF BTM SHEILD CRYSTAL FILTER SHIELD LVZIF TOP SHEILD SH322 SHI...

Page 115: ...AL1 XTAL2 VMULT1 VMULT2 VMULT3 VMULT4 MODOUT FREFOUT AUX4 AUX1 AUX2 AUX3 23 24 15 14 12 11 19 41 48 1 2 3 TEST2 WARP SFOUT TEST1 IADAPT INDMULT IOUT LOCK ADAPTSW 25 28 37 38 45 16 43 4 46 VCP VRO PRE_VDD PD_VDD DVDD AVDD 47 13 5 34 36 20 VBPASS PVREF SFIN MODIN BIAS1 BIAS2 CEX CLK DATA 21 35 30 10 40 39 9 8 7 REFSEL SFBASE SFCAP NC1 NC2 NC3 PREIN CCOMP 18 27 26 17 29 31 32 42 PD_GND PRE_GND DGND A...

Page 116: ...6 14 18 1 SHIELD SH242 1 SH241 SHIELD VCO TOP SHIELD VCO BOTTOM SHIELD R260 1K C297 01uF 4 1 3 Q260 2 AUX3 5V AUX4 1 3 Q261 2 100pF C289 330 R252 R251 18 100pF C255 R254 7 5K 1 2 3 3 6pF L253 RESONATOR C254 P1 P2 P3 C253 1 5pF CR251 10pF C252 C247 100pF 30 R248 0 1uF C248 7 5K R253 Tx_sw 100pF C251 L251 33nH CR242 L241 CR243 390nH VCTRL 100pF C241 2 CR241 1 3 L282 390nH 1 3 2 Q241 BFQ67W VSF R244 ...

Page 117: ...6 7 2 3 C161 0 1uF 200 R161 C127 1000pF 022uF C128 390nH L112 100pF C130 UNSWB 100pF C160 10pF C120 C121 100pF 15 0nH L160 022uF C152 R108 NU R107 C151 100pF C150 022uF NU 300 R110 2K R104 R111 20 300 R112 C125 100pF C295 100pF TX_INJ 4 22nH L108 11 03nH L109 C118 100pF 30pF C117 10 R106 C116 33pF 15pF C115 2 Q110 R103 43 R175 6 2 R176 6 2 0 1uF C172 R172 200 Microstrip C113 L106 10pF 7 66nH 19 61...

Page 118: ... 100 0 pF 5 C257 2113743N50 100 0 pF 5 Circuit Ref Motorola Part No Description C258 2113743L41 10000 pF 10 C259 2113743L41 10000 pF 10 C260 2113743N50 100 0 pF 5 C263 2113743N02 0 75 pF 0 25 pF C264 2113743N50 100 0 pF 5 C265 NOT PLACED C271 NOT PLACED C272 NOT PLACED C273 2113743M24 100000 pF 80 20 C276 2104993J02 2 2 uF C277 2113743N50 100 0 pF 5 C278 2311049A09 2 2 uF 10 C279 2104993J02 2 2 uF...

Page 119: ...3C01 Teflon Resonator L251 2462587V28 33 nH 5 L253 2460593C02 Teflon Resonator L261 2462587V29 39 nH 5 L271 2462587V32 68 nH 5 L273 2462587V28 33 nH 5 Circuit Ref Motorola Part No Description L281 2462587V41 390 nH 10 L282 2462587V41 390 nH 10 L301 2479990C01 13 9 nH L302 2479990C01 13 9 nH L303 2462587V26 22 nH 5 L304 2462587V37 180 nH 5 L305 2462587V26 22 nH 5 L306 2479990C01 13 9 nH L307 247999...

Page 120: ...048_ only Ref 4080710Z12 S502 1880619Z02 Potentiometer Volume SH100 2680507Z01 Shield Harmonic Filter Circuit Ref Motorola Part No Description SH101 2680510Z01 Shield PA SH201 2680511Z01 Shield Synthesizer SH202 2680511Z01 Shield Synthesizer SH241 2604120G01 Shield VCO SH242 2680514Z01 Shield VCO Bottom LVZIF SH301 2680554Z01 Shield Receiver Front End Top SH302 2680555Z01 Shield Receiver Front End...

Page 121: ... Press PTT Q502 2 High Check PB504 Check Q502 2 voltage LED Q502 R501 OK Replace Faulty Component Check Accessories J403 OPT_SEL_1 OPT_SEL_2 Pin 8 9 low Radio could not PTT externally U409 Pin 52 6 low See FGU Troubleshooting chart LED should light up Check MCU PTT NO YES YES No No NO YES YES NO YES YES NO NO YES YES NO NO YES NO YES NO YES YES NO NO YES EXT SPKR EXT PTT INT AUDIO J403 Pin 9 low P...

Page 122: ...IF Freq 45 1MHz Audio heard B Yes No Check 2nd LO Control Voltage at C363 VCO locked B Yes 16 8 MHz check at pin 22 U301 Activity on U301 sel pin Check FGU No No A A Yes Check Q320 bias cir cuitry for faults Rotate Freq Knob Check controller Before replacing U301 check 2nd VCO Q320 Check VCO O P level C351 C352 Yes No Troubleshooting Flow Chart for Receiver Sheet 1 of 2 ...

Page 123: ...RF amp Q301 Stage Check filter between C310 T301 Yes Check T301 T302 CR306 R308 R309 R310 Yes 1st LO O P OK Locked Yes Check FGU Yes Trace IF signal from L311 to Q302 Check for bad XTAL filter No Yes Q302 collector OK IF signal present Before replacing U301 check U301 voltages trace IF signal path Yes Check for 2 6 VDC Is R5 present Check Q210 U201 pin 48 voltages and U247 No No No Check U404 volt...

Page 124: ...ck Pin Diodes 2 Check Harmonic Filter Inspect Repair Tx Out put Network Is Power OK Done Check Drive to Module Is Drive OK Troubleshoot VCO Inspect PA Network Check Power Out of U101 at Cap C160 Is Power OK Replace U101 Is Power OK Replace Q101 Done Done No Yes Yes No No Yes Low High No Yes Yes No Yes No Troubleshooting Flow Chart for Transmitter ...

Page 125: ...n 47 and Pins 14 15 of U201 Replace or resolder necessary components Is RF level at U201 Pin 32 30 dBm Are R231 R232 R233 C231 C232 C233 OK Replace U201 If L261 C263 C264 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U201 toggle when channel is changed Check programming lines between U409 and U201 Pins 7 8 9 Replace U201 Check uP U409 Troubleshoo...

Page 126: ...ck U201 Pin 2 for 3 2V Pin 19 0V AUX 4 High Change Q261 V ctrl 0V or 13V L243 Open Circuit Change U241 Change L243 Change U201 Check for faulty parts or dry joints of L271 L273 C370 C386 R339 L320 A A No No Yes Yes Yes No No Yes Yes Yes No Yes No No Yes Yes No No Check R245 for dry joint or faulty No Troubleshooting Flow Chart for VCO ...

Page 127: ... MHz 4W 16CH X PMUE1706_ GP338 Plus Tanapa 450 527 MHz 4W 128CH X PMUE1879_ GP338 XLS Tanapa 450 527 MHz 4W 160CH X PMHE4027_ GP328 Plus B C Kit 450 527 MHz 4W 4CH X PMHE4004_ GP328 Plus B C Kit 450 527 MHz 4W 16CH X PMHE4011_ GP338 Plus B C Kit 450 527 MHz 4W 128CH X PMHE4021_ GP338 XLS B C Kit 450 527 MHz 4W 160CH X PMHE4025_ GP328 Plus Front Housing Kit 4CH X PMHE4002_ GP328 Plus Front Housing ...

Page 128: ...10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT4845 UHF RF Output Li Ion 7 5V Low 1W High 4W Frequency 450 527 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 Spurs Harmonics 36 d...

Page 129: ...hrs High Power 7 hrs 10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 FCC ID AZ489FT4845 UHF RF Output Li Ion 7 5V Low 1W High 4W Frequency 450 527 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025...

Page 130: ...of 7 3V This RF power amplifier is capable of supplying an output power of 0 3W pin 6 and 7 with an input signal of 2mW 3dBm pin16 The current drain would typically be 160mA while operating in the frequency range of 450 527MHz The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0 3W The current drain would typically be 1300mA while operating in the frequency ...

Page 131: ...rk which is made up of L116 is used to match the antenna s impedance to the harmonic filter This will optimize the performance of the transmitter and receiver into an antenna 4 1 5 Power Control Integrated Circuit PCIC The transmitter uses the Power Control IC PCIC U102 to regulate the power output of the radio The current to the final stage of the power module is supplied through R101 which provi...

Page 132: ...roprocessor Depending on the carrier frequency the DACRx will supply the tuned voltage to the varactor diodes in the filter Wideband operation of the filter is achieved by shifting the bandpass filter across the band The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307 After being amplified by the RF amplifier the RF signal is further filtered by a second varac...

Page 133: ...l filtering once externally provided by the conventional ceramic filters is replaced by internal filters in the IF module U301 The IF IC uses a type of direct conversion process whereby the externally generated second LO frequency is divided by two in U301 so that it is very close to the first IF frequency The IF IC U301 synthesizes the second LO and phase locks the VCO to track the first IF frequ...

Page 134: ... Q315 is an NPN transistor used for switching here Maximum current flowing through the PIN is mainly limited by the resistor R319 Radio signal strength indicator RSSI a voltage signal is used to drive Q315 to saturation hence turning it on RSSI is produced by U301 and is proportional to the gain of the RF amplifier and the input RF signal power to the radio Resistor network at the input to the bas...

Page 135: ...ynthesizer must interface with the logic and ASFIC circuitry Programming for the synthesizer is accomplished through the data clock and chip select lines from the microprocessor A 3 3V dc signal from synthesizer lock detect line indicates to the microprocessor that the synthesizer is locked Transmit modulation from the ASFIC is supplied to pin10 of U201 Internally the audio is digitized by the Fra...

Page 136: ...frequency is then locked by normal mode charge pump at pin 43 Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier which is made up of C258 C259 C228 triple diode CR201 and level shifters U210 and U211 Two 3 3V square waves 180 deg out of phase are first shifted to 5V then along with regulated 5V put through arrays of diodes and capacitors to build up 13 3...

Page 137: ...equency comparison in the synthesizer a resultant CONTROL VOLTAGE is received at the VCO This voltage is a DC voltage between 3 5V and 9 5V when the PLL is locked on frequency Presc RX TX Matching Network Low Pass Filter Attenuator Pin8 Pin14 Pin10 Level Shifter Network 5V U201 Pin28 VCC Buffers TX RF Injection U201 Pin 32 AUX4 U201 Pin3 AUX3 U201 Pin2 Prescaler Out Pin 12 Pin 19 Pin 20 TX RX BS S...

Page 138: ...matic Diagram on page 5C 22 During the transmit condition when PTT is depressed five volts is applied to U241 pin 19 This activates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241 The RF signal at U241 pin 10 is injected into the input of the PA module U101 pin16 This RF signal is the TX RF INJECTION Also in transmit mode the audio signal to be frequency modula...

Page 139: ...g 3 Reference Designators are assigned in the following manner 100 Series Transmitter 200 Series Frequency Generation 300 Series Receiver 400 500 Series Controller 600 Series Keypad Board 4 Interconnect Tie Point Legend UNSWB Unswitch Battery Voltage 7 5V SWB Switch Battery Voltage 7 5V R5 Receiver Five Volts CLK Clock Vdda Regulated 3 3 Volts for analog Vddd Regulated 3 3 Volts for digital CSX Ch...

Page 140: ...5C 14 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 141: ...6 L107 L108 L113 L117 L160 3 2 Q110 1 R104 R106 R107 R174 R108 R120 R171 R161 R173 R191 SH101 U101 9 8 16 1 C375 C320 C319 C322 C381 L309 L310 R309 R308 R310 R348 SH303 T301 3 4 6 T302 3 4 6 C324 C325 C323 FL301 L311 R351 R352 SH323 C521 PB501 PB502 VR440 C328 C391 C397 Q315 Q316 R326 R338 R300 R314 R316 R318 R319 R325 R327 R334 R335 RT300 RT301 VR300 C331 C396 C333 CR308 R342 R317 R336 C101 C102 ...

Page 142: ... CR501 E101 F501 L112 R102 R329 SH304 VR439 C105 C174 C133 C135 C134 R109 R130 R131 R132 25 9 17 U102 1 C241 C246 C255 C281 C295 C372 C371 C373 C378 C242 C243 C250 C244 C245 C252 C254 CR241 CR242 CR243 CR251 L241 L251 L281 L242 M300 Q310 R330 R332 R110 R112 R111 R349 R242 R241 R244 R245 R251 R252 R254 R331 SH242 U241 10 20 1 11 C201 C264 C218 C223 C224 C231 C296 C298 C202 C265 C204 C206 C207 C208 ...

Page 143: ... L160 3 2 Q110 1 R104 R174 R106 R107 R108 R120 R171 R161 R173 R175 R176 R191 SH101 1 16 8 9 U101 C101 C102 C104 C103 C106 C107 C188 CR101 CR102 L101 L102 L104 L105 SH100 C140 C141 L116 C511 C514 C520 CR503 2 3 4 PB505 R501 R502 VR443 C308 C304 C301 C305 C302 C303 CR301 CR302 L301 L302 R301 R302 SH301 C331 C333 C396 CR308 R336 R342 R317 SH321 C375 C320 C319 C322 C381 L309 L310 R309 R308 R310 R348 S...

Page 144: ...131 R132 R136 25 9 17 U102 1 C503 CR306 CR501 F501 R329 SH304 VR439 C327 C326 C330 C338 L330 Q302 R315 R311 R312 R313 1 2 3 B501 C277 C215 C279 C522 C278 L505 R205 U248 VR441 VR506 Y201 4 3 2 C525 C526 C527 C528 C529 C530 C531 C532 C533 C534 C535 C536 C537 C538 C544 C545 C546 C547 C549 C550 C555 C539 C540 C541 C542 C543 C548 R509 R510 C551 C552 C553 R511 C201 C264 C208 C265 C218 C223 C224 C231 C29...

Page 145: ...SI 16 8MHz UNSWB LOCK 5V DEMOD RESET J200 J200 18 J200 16 J200 17 J200 36 J200 40 J200 39 J200 37 J200 32 J200 33 J200 23 J200 38 J200 28 J200 22 J200 26 J200 34 J200 30 J200 19 J200 20 J200 4 J200 5 J200 6 J200 7 J200 8 J200 9 J200 10 J200 29 J200 15 J200 3 J200 24 J200 31 J200 25 J200 1 J200 11 J200 12 J200 2 J200 21 J200 27 J200 13 J200 14 J200 35 100pF C536 100pF C535 C533 100pF 100pF C537 C53...

Page 146: ...4 B2 SWITCH PB501 10K R505 IMX1 5 1 6 6 8V VR443 6 8V SWITCH PB504 1 A1 3 A2 2 B1 4 B2 VR444 6 8V VR440 B503 if 12V VR439 2 4 3 CONN_J B501 2 DATA 1 NEG 3 POS TAB1 1 TAB2 2 TAB3 3 TAB4 4 TAB5 5 ANTENNA_NUT J102 R507 0 2 4 1 3 CR503 K2 K3 VR441 6 8V CR160 A1 A2 A3 K1 C522 01uF if 4 GND 1 2 3 RF_JACK J101 RF_JACK 01uF C520 C503 C521 100pF 01uF 100pF 100pF C514 C513 3 A2 2 B1 4 B2 PB502 SWITCH 1 A1 C...

Page 147: ...3 3 TAB4 4 TAB5 5 CONN_J B501 ANTENNA_NUT J102 TAB1 1 R507 0 2 4 1 3 CR503 VR441 6 8V CR160 A1 A2 A3 K1 K2 K3 01uF if 4 GND 1 2 3 C522 J101 RF_JACK 47K R506 RF_JACK VR506 6 8V 1 A1 3 A2 2 B1 4 B2 C141 8 2pF SWITCH PB505 C503 C521 100pF 01uF 100pF 100pF C514 C513 3 A2 2 B1 4 B2 PB502 SWITCH 1 A1 CR501 1 2 B504 100pF IMX1 5 1 6 C505 6 8V VR443 A1 3 A2 2 B1 4 B2 VR444 6 8V SWITCH PB504 1 6 8V VR440 0...

Page 148: ...pF C381 R329 0 C318 11pF C317 7 5pF T301 4 6 3 1 2 XFMR TP302 T302 XFMR 4 6 3 1 2 C320 C319 7 5pF 3 6pF 16 28nH L309 R348 3 6K R336 C333 R5 NU NU 33K R327 R316 91K Q315 1 3 2 18K R318 R319 150 C396 NU R300 2 2K 0 47pF C397 1 33 0K RT300 2 R334 Q316 1 3 2 VR300 R326 NU NU NU NU R325 6 8K R338 R335 RT301 2 1 C391 NU NU NU NU R5 C370 100pF R330 RSSI RX_INJ NU R331 C372 Q310 1 3 2 C371 100pF C386 NU N...

Page 149: ...13 30K R311 C326 01uF Q302 R351 0 3 3K R352 12K R315 680nH L330 01uF C325 C323 150pF 20pF C324 750nH L311 GND2 4 GND3 5 OUT 3 IN 6 TBD XTAL FL301 GND 1 GND1 2 IF 10uF C382 C348 0 1uF 0 1uF C329 2 20uH L331 R343 10 0 1uF C344 Vdd_FILTERED SOURCE C343 0 22uF 0 1uF C347 0 1uF C346 Vdda 022uF C334 DB 0 1uF C359 1200pF C358 R344 12K C383 100pF 0 22uF C357 16 8MHz Vdd_FILTERED CLK DATA LVZIF_SEL C350 33...

Page 150: ...OTTOM SHIELD SHIELD SH201 SHIELD SH202 L232 12uH 47K R204 CR203 C238 470pF 1 6pF C208 1 GND GND1 4 OUT 3 IN 6 FL201 75Z04 100pF C260 100pF C213 5V LOCK AUX4 AUX3 4 3K R255 30 R256 Q210 2 4 1 3 R5 16 8MHz 10K 47K 4 7K 47K 120 R232 620 R231 0 1uF C233 560 R233 C231 0 1uF C234 0 47uF C232 047uF TP202 1 MODOUT 100pF C277 2 2uF C278 4V_3 3V C279 2 2uF 100pF C220 GND 2 NC 4 3 ON_OFF VIN 1 VOUT 5 U248 LP...

Page 151: ...pF C285 R241 18 15K R244 L243 RESONATOR 1 2 3 4 3pF C250 4 3pF C242 4 3pF C243 1 2 CR243 A1 A2 CR241 C241 100pF 22nH L242 390nH L241 CR242 R243 10K C244 3 6pF Rx_sw 1 3 2 Q241 BFQ67W 30 R248 L282 390nH C247 0 1uF C248 100pF R253 7 5K Tx_sw C253 1 5pF 100pF C251 CR251 20pF C252 390nH L251 C254 3 3pF R251 33 L253 RESONATOR 1 2 3 100pF C289 100pF C255 R252 270 R254 8 2K 1K R260 4 1 3 Q261 2 10K 47K 4...

Page 152: ...C121 C150 022uF C151 100pF C161 0 1uF 200 R161 100pF C130 C128 022uF 390nH L112 R108 5 6K L160 15 0nH 56pF C160 022uF C152 UNSWB 33pF C116 C117 30pF 11 03nH L109 4 22nH L108 10 R106 100pF C115 C118 30pF C125 100pF 100pF C295 300 R112 R110 300 20 R111 R107 TX_INJ_1 TX_INJ NU Microstrip Microstrip 1 2 3 C111 11pF C112 47pF L107 33 47nH 0 1 R102 C113 10pF BEAD E101 C114 100pF C123 10uF 200 R172 0 1uF...

Page 153: ...13743N26 10 0 pF 5 Circuit Ref Motorola Part No Description C253 2113740L01 2 0 pF C254 2113743N26 10 0 pF 5 C255 2113743N50 100 pF 5 C257 2113743N50 100 pF 5 C258 2113743L41 10000 pF 10 C259 2113743L41 10000 pF 10 C260 2113743N50 100 pF 5 C263 2113743N02 0 75 pF 0 25 pF C264 2113743N50 100 pF 5 C265 NOT PLACED C271 2113743N03 1 0 pF 0 25 pF C272 2113743N04 1 1 pF 0 25 pF C273 2113743M24 100000 pF...

Page 154: ...0 nH 5 L241 2462587V41 390 nH 10 L242 2462587V26 22 nH 5 L243 2460593C03 Teflon Resonator L251 2462587V41 390 nH 10 Circuit Ref Motorola Part No Description L253 2460593C03 Teflon Resonator L261 2462587V29 39 nH 5 L271 2462587V27 27 nH 5 L273 2462587V25 18 nH 5 L281 2462587V41 390 nH 10 L282 2462587V41 390 nH 10 L301 2479990B01 11 03 nH L302 2479990B01 11 03 nH L303 2462587V26 22 nH 5 L304 2462587...

Page 155: ... Circuit Ref Motorola Part No Description S501 4080710Z01 Channel Switch Ref 4080710Z09 4080710Z05 Channel Switch used in PMUE2049_ only Ref 4080710Z12 S502 1880619Z02 Potentiometer Volume SH100 2680507Z01 Shield Harmonic Filter SH101 2680510Z01 Shield PA SH201 2680511Z01 Shield Synthesizer SH202 2680511Z01 Shield Synthesizer SH241 2604120G01 Shield VCO SH242 2680514Z01 Shield VCO Bottom LVZIF SH3...

Page 156: ...5C 30 Circuit Board Schematic Diagrams and Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 157: ... Press PTT Q502 2 High Check PB504 Check Q502 2 voltage LED Q502 R501 OK Replace Faulty Component Check Accessories J403 OPT_SEL_1 OPT_SEL_2 Pin 8 9 low Radio could not PTT externally U409 Pin 52 6 low See FGU Troubleshooting chart LED should light up Check MCU PTT NO YES YES No No NO YES YES NO YES YES NO NO YES YES NO NO YES NO YES NO YES YES NO NO YES EXT SPKR EXT PTT INT AUDIO J403 Pin 9 low P...

Page 158: ...IF Freq 45 1MHz Audio heard B Yes No Check 2nd LO Control Voltage at C363 VCO locked B Yes 16 8 MHz check at pin 22 U301 Activity on U301 sel pin Check FGU No No A A Yes Check Q320 bias cir cuitry for faults Rotate Freq Knob Check controller Before replacing U301 check 2nd VCO Q320 Check VCO O P level C351 C352 Yes No Troubleshooting Flow Chart for Receiver Sheet 1 of 2 ...

Page 159: ...RF amp Q301 Stage Check filter between C310 T301 Yes Check T301 T302 CR306 R308 R309 R310 Yes 1st LO O P OK Locked Yes Check FGU Yes Trace IF signal from L311 to Q302 Check for bad XTAL filter No Yes Q302 collector OK IF signal present Before replacing U301 check U301 voltages trace IF signal path Yes Check for 2 6 VDC Is R5 present Check Q210 U201 pin 48 voltages and U247 No No No Check U404 volt...

Page 160: ...ck Pin Diodes 2 Check Harmonic Filter Inspect Repair Tx Out put Network Is Power OK Done Check Drive to Module Is Drive OK Troubleshoot VCO Inspect PA Network Check Power Out of U101 at Cap C160 Is Power OK Replace U101 Is Power OK Replace Q101 Done Done No Yes Yes No No Yes Low High No Yes Yes No Yes No Troubleshooting Flow Chart for Transmitter ...

Page 161: ...n 47 and Pins 14 15 of U201 Replace or resolder necessary components Is RF level at U201 Pin 32 30 dBm Are R231 R232 R233 C231 C232 C233 OK Replace U201 If L261 C263 C264 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U201 toggle when channel is changed Check programming lines between U409 and U201 Pins 7 8 9 Replace U201 Check uP U409 Troubleshoo...

Page 162: ...ck U201 Pin 2 for 3 2V Pin 19 0V AUX 4 High Change Q261 V ctrl 0V or 13V L243 Open Circuit Change U241 Change L243 Change U201 Check for faulty parts or dry joints of L271 L273 C370 C386 R339 L320 A A No No Yes Yes Yes No No Yes Yes Yes No Yes No No Yes Yes No No Check R245 for dry joint or faulty No Troubleshooting Flow Chart for VCO ...

Page 163: ...lus Super Tanapa 330 400 MHz 4W 128CH X PMUD1679 GP328 Plus Tanapa 330 400 MHz 4W X PMUD1680 GP338 Plus Tanapa 330 400 MHz 4W 128CH X JMHD4007 GP328 Plus B C Kit 330 400 MHz 4W X PMHD4007 GP338 Plus B C Kit 330 400 MHz 4W 128CH X PMHD4002 GP328 Plus Front Housing Kit X PMHD4003 GP338 Plus Front Housing Kit X X PMAD4009 VHF 9 cm antenna 336 368 MHz X X PMAD4020 VHF 9 cm antenna 370 400 MHz X 680402...

Page 164: ...Power 7 hrs 10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 330 400MHz RF Output Li Ion 7 5V Low 1W High 4W Frequency 330 400 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 Spurs Harmonics 36 d...

Page 165: ... Power 7 hrs 10 hrs Sealing Meets MIL STD 810 C D E and IPX4 Shock Meets MIL STD 810 C D E and TIA EIA 603 Vibration Meets MIL STD 810 C D E and TIA EIA 603 Dust Meets MIL STD 810 C D E and IP5X Humidity Meets MIL STD 810 C D E and TIA EIA 603 330 400MHz RF Output Li Ion 7 5V Low 1W High 4W Frequency 330 400 MHz Channel Spacing 12 5 20 25 kHz Freq Stability 30 C to 60 C 0 00025 Spurs Harmonics 36 ...

Page 166: ... 7 3V This RF power amplifier is capable of supplying an output power of 0 3W pin 6 and 7 with an input signal of 2mW 3dBm pin16 The current drain would typically be 160mA while operating in the frequency range of 330 400MHz The PRF1507 LDMOS PA is capable of supplying an output power of 7W with an input signal of 0 3W The current drain would typically be 1300mA while operating in the frequency ra...

Page 167: ...rk which is made up of L116 is used to match the antenna s impedance to the harmonic filter This will optimize the performance of the transmitter and receiver into an antenna 4 1 5 Power Control Integrated Circuit PCIC The transmitter uses the Power Control IC PCIC U102 to regulate the power output of the radio The current to the final stage of the power module is supplied through R101 which provi...

Page 168: ...croprocessor Depending on the carrier frequency the DACRx will supply the tuned voltage to the varactor diodes in the filter Wideband operation of the filter is achieved by shifting the bandpass filter across the band The output of the bandpass filter is coupled to the RF amplifier transistor Q301 via C307 After being amplified by the RF amplifier the RF signal is further filtered by a second vara...

Page 169: ...l filtering once externally provided by the conventional ceramic filters is replaced by internal filters in the IF module U301 The IF IC uses a type of direct conversion process whereby the externally generated second LO frequency is divided by two in U301 so that it is very close to the first IF frequency The IF IC U301 synthesizes the second LO and phase locks the VCO to track the first IF frequ...

Page 170: ... Q315 is an NPN transistor used for switching here Maximum current flowing through the PIN is mainly limited by the resistor R319 Radio signal strength indicator RSSI a voltage signal is used to drive Q315 to saturation hence turning it on RSSI is produced by U301 and is proportional to the gain of the RF amplifier and the input RF signal power to the radio Resistor network at the input to the bas...

Page 171: ...ynthesizer must interface with the logic and ASFIC circuitry Programming for the synthesizer is accomplished through the data clock and chip select lines from the microprocessor A 3 3V dc signal from synthesizer lock detect line indicates to the microprocessor that the synthesizer is locked Transmit modulation from the ASFIC is supplied to pin10 of U201 Internally the audio is digitized by the Fra...

Page 172: ...frequency is then locked by normal mode charge pump at pin 43 Both the normal and adapt charge pumps get their supply from the capacitive voltage multiplier which is made up of C258 C259 C228 triple diode CR201 and level shifters U210 and U211 Two 3 3V square waves 180 deg out of phase are first shifted to 5V then along with regulated 5V put through arrays of diodes and capacitors to build up 13 3...

Page 173: ...equency comparison in the synthesizer a resultant CONTROL VOLTAGE is received at the VCO This voltage is a DC voltage between 3 5V and 9 5V when the PLL is locked on frequency Presc RX TX Matching Network Low Pass Filter Attenuator Pin8 Pin14 Pin10 Level Shifter Network 5V U201 Pin28 VCC Buffers TX RF Injection U201 Pin 32 AUX4 U201 Pin3 AUX3 U201 Pin2 Prescaler Out Pin 12 Pin 19 Pin 20 TX RX BS S...

Page 174: ...matic Diagram on page 5D 22 During the transmit condition when PTT is depressed five volts is applied to U241 pin 19 This activates the transmit VCO by enabling the transmit oscillator and the transmit buffer of U241 The RF signal at U241 pin 10 is injected into the input of the PA module U101 pin16 This RF signal is the TX RF INJECTION Also in transmit mode the audio signal to be frequency modula...

Page 175: ...g 3 Reference Designators are assigned in the following manner 100 Series Transmitter 200 Series Frequency Generation 300 Series Receiver 400 500 Series Controller 600 Series Keypad Board 4 Interconnect Tie Point Legend UNSWB Unswitch Battery Voltage 7 5V SWB Switch Battery Voltage 7 5V R5 Receiver Five Volts CLK Clock Vdda Regulated 3 3 Volts for analog Vddd Regulated 3 3 Volts for digital CSX Ch...

Page 176: ...5D 14 Notes For All Schematics and Circuit Boards THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 177: ...301 SH323 VR300 VR440 C375 C320 C319 C322 C381 L309 L310 R308 R310 R309 R348 SH303 T301 3 4 6 T302 3 4 6 16 C109 C110 C114 C119 C122 C166 C171 C111 C112 C113 C115 C116 C117 C118 C121 C125 C160 C165 C120 C161 C193 C127 C131 C129 C169 C180 C181 L115 L106 L107 L108 L109 L113 L114 L117 L160 3 2 Q110 1 R104 R106 R107 R174 R108 R120 R171 R161 R193 R173 SH101 U101 9 8 1 C101 C102 C104 C103 C106 C107 C188...

Page 178: ...R306 CR501 E101 F501 L112 R102 R329 SH304 VR439 C105 C174 C133 C135 C134 R109 R130 R131 R132 R136 25 9 17 U102 1 C241 C246 C255 C281 C295 C372 C371 C373 C378 C242 C250 C243 C244 C245 C254 C252 C256 CR241 CR242 CR243 CR251 CR252 L241 L242 L281 L251 M300 Q310 R330 R332 R254 R110 R112 R111 R241 R252 R242 R244 R245 R251 R331 R349 SH242 U241 10 20 1 11 C201 C264 C218 C223 C224 C231 C296 C298 C202 C265 ...

Page 179: ...48 C273 C286 C253 C276 C271 C272 L282 3 L243 1 3 L253 1 L271 L273 L321 Q261 3 4 Q241 R333 R243 R248 R253 R260 R339 SH241 C109 C110 C114 C119 C122 C166 C171 C111 C112 C113 C115 C116 C180 C117 C118 C121 C125 C160 C165 C120 C161 C193 C127 C131 C129 C169 C181 L115 L106 L107 L108 L109 L113 L114 L117 L160 3 2 Q110 1 R104 R174 R106 R107 R108 R120 R171 R161 R193 R173 R175 R176 SH101 1 16 8 9 U101 C101 C10...

Page 180: ... C342 C358 C359 R344 13 25 37 1 U301 C383 C390 C346 C339 C340 C343 C357 SH322 C327 C338 C326 C330 L330 Q302 R315 R311 R312 R313 1 2 3 B501 C215 C277 C279 C522 C278 L505 R205 U248 VR441 VR506 SH202 Y201 4 3 2 C208 CR203 C263 C264 C298 C202 C204 L261 R204 C201 C223 C231 C219 C232 C234 C293 R201 R202 R231 R232 R233 13 25 37 1 U201 C265 C218 C206 C207 R281 U210 3 4 C296 C258 C259 U211 3 4 C503 CR306 C...

Page 181: ...B1 RSSI 16 8MHz UNSWB LOCK 5V DEMOD RESET J200 33 J200 J200 29 J200 30 J200 15 J200 24 J200 3 J200 25 J200 31 J200 10 J200 11 J200 12 J200 19 J200 38 J200 22 J200 26 J200 28 J200 37 J200 23 J200 21 J200 27 J200 13 J200 20 J200 4 J200 14 J200 6 J200 5 J200 7 J200 8 J200 39 J200 1 J200 16 J200 2 J200 18 J200 17 J200 36 J200 40 J200 32 J200 9 J200 35 J200 34 C527 100pF C526 100pF C525 100pF 100pF 100...

Page 182: ...4 B2 SWITCH PB501 10K R505 IMX1 5 1 6 6 8V VR443 6 8V SWITCH PB504 1 A1 3 A2 2 B1 4 B2 VR444 6 8V VR440 B503 if 12V VR439 2 4 3 CONN_J B501 2 DATA 1 NEG 3 POS TAB1 1 TAB2 2 TAB3 3 TAB4 4 TAB5 5 ANTENNA_NUT J102 R507 0 2 4 1 3 CR503 K2 K3 VR441 6 8V CR160 A1 A2 A3 K1 C522 01uF if 4 GND 1 2 3 RF_JACK J101 RF_JACK 01uF C520 C503 C521 100pF 01uF 100pF 100pF C514 C513 3 A2 2 B1 4 B2 PB502 SWITCH 1 A1 C...

Page 183: ... A1 1 A2 A1 1 A2 3 B1 2 B2 4 SWITCH PB501 TAB2 2 TAB3 3 TAB4 4 TAB5 5 Q505 ANTENNA_NUT J102 TAB1 1 DATA 1 NEG 3 POS CONN_J B501 2 0 47uF 2 3 DUMMY C502 J101 RF_JACK if 4 GND 1 VR506 6 8V P100 2 4 3 10K R505 12V VR439 100pF C511 100pF 100pF C512 C514 C513 24V 2 1 100pF F501 R502 180 01uF C520 L505 390nH 6 8V VR443 GND 7 9 GND1 PC0 1 PC1 2 PC2 4 8 PC3 SWITCH S501 C0 C0 C1 C1 6 8V RF_JACK VR501 A1 1 ...

Page 184: ...318 12pF C317 8 2 pF T301 4 6 3 1 2 XFMR TP302 T302 XFMR 4 6 3 1 2 C320 C319 7 5pF 1 8pF 16 28nH L309 R348 3 6K R336 C333 R5 NU NU 33K R327 R316 91K Q315 1 3 2 18K R318 R319 150 C396 NU R300 2 2K 1uF C397 1 33 0K RT300 2 R334 Q316 1 3 2 VR300 R326 NU NU NU NU R325 6 8K R338 R335 RT301 2 1 C391 NU NU NU NU R5 C370 100pF R330 RSSI RX_INJ NU R331 C372 Q310 1 3 2 C371 100pF C386 NU NU NU NU 0 R349 100...

Page 185: ... R311 C326 01uF Q302 R351 0 3 3K R352 12K R315 680nH L330 01uF C325 C323 150pF 20pF C324 750nH L311 GND2 4 GND3 5 OUT 3 IN 6 TBD XTAL FL301 GND 1 GND1 2 IF 10uF C382 C348 0 1uF 0 1uF C329 2 20uH L331 R343 10 0 1uF C344 Vdd_FILTERED SOURCE C343 0 22uF 0 1uF C347 0 1uF C346 Vdda 022uF C334 DB 0 1uF C359 1200pF C358 R344 12K C383 100pF 0 22uF C357 16 8MHz Vdd_FILTERED CLK DATA LVZIF_SEL C350 330pF C3...

Page 186: ...SHIELD SHIELD SH201 SHIELD SH202 L232 12uH 47K R204 CR203 C238 470pF NU C208 1 GND GND1 4 OUT 3 IN 6 FL201 75Z04 100pF C260 100pF C213 5V LOCK AUX4 AUX3 4 3K R255 30 R256 Q210 2 4 1 3 R5 16 8MHz 10K 47K 4 7K 47K 120 R232 620 R231 0 1uF C233 560 R233 C231 0 1uF C234 0 47uF C232 047uF TP202 1 MODOUT 100pF C277 2 2uF C278 4V_3 3V C279 2 2uF 100pF C220 GND 2 NC 4 3 ON_OFF VIN 1 VOUT 5 U248 LP2980 C294...

Page 187: ...ESONATOR 1 2 3 7 5pF C250 7 5pF C242 6 8pF C243 1 2 CR243 A1 A2 CR241 C241 100pF 390nH L242 390nH L241 CR242 R243 10K C244 7pF Rx_sw 1 3 2 Q241 BFQ67W 6 8pF R248 L282 390nH C247 0 1uF C248 100pF R253 7 5K Tx_sw C253 NU 100pF C251 CR252 CR251 13pF C252 13pF C256 180nH L251 C254 2 7pF R251 22 L253 RESONATOR 1 2 3 100pF C289 100pF C255 R252 200 R254 5 6K 1K R260 4 1 3 Q261 2 10K 47K 47K 4 7K 2 4 1 3 ...

Page 188: ...121 C150 022uF C151 100pF C161 0 1uF 200 R161 100pF C130 C128 022uF 390nH L112 R108 5 6K L160 15 0nH 56pF C160 022uF C152 UNSWB 33pF C116 C117 30pF 11 03nH L109 4 22nH L108 10 R106 100pF C115 C118 30pF C125 100pF 100pF C295 300 R112 R110 300 20 R111 R107 TX_INJ_1 TX_INJ NU Microstrip Microstrip 1 2 3 C111 11pF C112 47pF L107 33 47nH 0 1 R102 C113 10pF BEAD E101 C114 100pF C123 10uF 200 R172 0 1uF ...

Page 189: ...255 2113743N50 100pF C256 2113743N29 13 0pF C257 2113743N50 100pF C258 2113743L41 0 01uF Circuit Ref Motorola Part No Description C259 2113743L41 0 01uF C260 2113743N50 100pF C264 2113743N50 100pF C271 2113743N03 1 0pF C272 2113743N03 1 0pF C273 2113743M24 0 1uF C276 2104993J02 2 2uF C277 2113743N50 100pF C278 2311049A09 2 2uF C279 2104993J02 2 2uF C281 2113743N50 100pF C285 2113743N50 100pF C286 ...

Page 190: ... L309 2479990C02 16 28nH L310 2462587V36 150nH L311 2462587N65 750nH L314 2462587N72 2200nH L325 2480646Z20 2 20uH L330 2462587N64 680nH L331 2480646Z20 2 2uH L332 2462587N53 100nH Circuit Ref Motorola Part No Description L340 2462587V41 390nH L400 2462587Q42 390NH L401 2462587Q42 390NH L410 2462587Q42 390NH L411 2462587Q42 390NH L505 2462587Q42 390nH P100 3905643V01 Gnd Contact Finger PB501 40703...

Page 191: ...r Top Shield SH202 2680511Z01 Synthesizer Bottom Shield SH241 2604120G01 VCO Top Shield SH242 2680514Z01 VCO Bottom Shield SH301 2680554Z01 Rx Pre Filter Shield SH302 2680555Z01 Rx Post Filter SH303 2680509Z01 Mixer Shield SH304 2680624Z01 Mixer Diode Shield SH321 2680508Z01 Zif 2nd Lo Shield SH322 2680514Z01 Zif Shield SH323 2604082P01 Xtal Filter Shield T301 2580541Z02 XFMR Coil T302 2580541Z02 ...

Page 192: ...5D 30 Circuit Board Schematic Diagrams and Parts List THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 193: ... Press PTT Q502 2 High Check PB504 Check Q502 2 voltage LED Q502 R501 OK Replace Faulty Component Check Accessories J403 OPT_SEL_1 OPT_SEL_2 Pin 8 9 low Radio could not PTT externally U409 Pin 52 6 low See FGU Troubleshooting chart LED should light up Check MCU PTT NO YES YES No No NO YES YES NO YES YES NO NO YES YES NO NO YES NO YES NO YES YES NO NO YES EXT SPKR EXT PTT INT AUDIO J403 Pin 9 low P...

Page 194: ...IF Freq 45 1MHz Audio heard B Yes No Check 2nd LO Control Voltage at C363 VCO locked B Yes 16 8 MHz check at pin 22 U301 Activity on U301 sel pin Check FGU No No A A Yes Check Q320 bias cir cuitry for faults Rotate Freq Knob Check controller Before replacing U301 check 2nd VCO Q320 Check VCO O P level C351 C352 Yes No Troubleshooting Flow Chart for Receiver Sheet 1 of 2 ...

Page 195: ...RF amp Q301 Stage Check filter between C310 T301 Yes Check T301 T302 CR306 R308 R309 R310 Yes 1st LO O P OK Locked Yes Check FGU Yes Trace IF signal from L311 to Q302 Check for bad XTAL filter No Yes Q302 collector OK IF signal present Before replacing U301 check U301 voltages trace IF signal path Yes Check for 2 6 VDC Is R5 present Check Q210 U201 pin 48 voltages and U247 No No No Check U404 volt...

Page 196: ...ck Pin Diodes 2 Check Harmonic Filter Inspect Repair Tx Out put Network Is Power OK Done Check Drive to Module Is Drive OK Troubleshoot VCO Inspect PA Network Check Power Out of U101 at Cap C160 Is Power OK Replace U101 Is Power OK Replace Q101 Done Done No Yes Yes No No Yes Low High No Yes Yes No Yes No Troubleshooting Flow Chart for Transmitter ...

Page 197: ...n 47 and Pins 14 15 of U201 Replace or resolder necessary components Is RF level at U201 Pin 32 30 dBm Are R231 R232 R233 C231 C232 C233 OK Replace U201 If L261 C263 C264 are OK then see VCO troubleshooting chart Are Waveforms at Pins 14 15 triangular Do Pins 7 8 9 of U201 toggle when channel is changed Check programming lines between U409 and U201 Pins 7 8 9 Replace U201 Check uP U409 Troubleshoo...

Page 198: ...ck U201 Pin 2 for 3 2V Pin 19 0V AUX 4 High Change Q261 V ctrl 0V or 13V L243 Open Circuit Change U241 Change L243 Change U201 Check for faulty parts or dry joints of L271 L273 C370 C386 R339 L320 A A No No Yes Yes Yes No No Yes Yes Yes No Yes No No Yes Yes No No Check R245 for dry joint or faulty No Troubleshooting Flow Chart for VCO ...

Page 199: ...RAMS AND PARTS LISTS 1 0 RF Controller Interconnect Flex 1 1 Rev A 1 2 Rev B 98 C J200 40 J400 40 TO CTRL 8480475Z02 REV A TO RF Front Metal View From Top Side 98 C J200 40 J400 40 TO CTRL 8480475Z03 REV B TO RF Front Metal View From Top Side ...

Page 200: ...B4 DB5 DB6 DB7 A0 SCK_Snd CLK VS_RAC Gnd 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 RF BOARD J200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 EXT_MIC VS_CS SW_B Vddd VS_AUDSEL Det_Aud_Snd Rx_Aud_Rtn Tx_Aud_Snd Tx_Aud_Rtn Flat_Tx_Rtn Opt_Bd_En Rdy Req Rx_Aud_Snd ON ...

Page 201: ...ector Flex 6 3 3 0 Universal Connector Flex 3 1 GP328 Plus Back Metal View From Back Side J404 J405 J406 J407 J408 J409 J410 J411 J412 J413 J414 J415 J416 M401 1 20 P403 Front Metal View From Front Side 1 2 M400 C402 ...

Page 202: ...onnector Flex 3 2 GP338 Plus GP338 XLS View From Back Side C 8486095Z01_O 2001 C402 Front Metal View From Front Side J404 J405 J406 J407 J408 J409 J410 J411 J412 J413 J414 J415 J416 2 1 M400 M401 P403 1 20 Back Metal ...

Page 203: ...GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 J403 20 PIN CONN M400 SPKR_20 SPKR_20 EXT_SPKR 2113740A55 EXT_SPK OPT_B EXT_MIC OPT_SEL_2 OPT_SEL_1 GND RX_DATA BOOT_CTRL 13 PIN UNIVERSAL CONN NC E C M TX_DATA RSSI RX_AUDIO TX_AUDIO J404 J406 J405 J408 J407 J409 J410 J414 J413 C402 100pF 5013920A04 M401 2 1 J415 J412 J416 J411 spe SPKR_20 OPT_B 30 5005679X01 SPEAKER M400 SPKR_20 SPKR_20 20 P...

Page 204: ...us 5 2 GP338 Plus GP338 XLS Reference Symbol Motorola Part No Description C402 2113740A55 Cap 100pF M400 5005679X01 Speaker 24 ohm M401 5013920A04 Mic Mini electrec Reference Symbol Motorola Part No Description C402 2113740A55 Cap 100pF M400 5086094Z01 Speaker 20 ohm M401 5013920A04 Mic Mini electrec ...

Page 205: ...anual No 6804112J28 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 206: ...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 6804112J28 Fax to 6 04 6124944 The Technical Publications Coordinator Media and Communications R D Department Motorola Penang Co...

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