Motorola ASTRO Digital Saber Service Manual Download Page 118

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13-10

NLE4244P UHF Range 2 Transceiver Circuit Board Details and Parts List

Q110

R102

TP10

L102

L600

C609

R605

R602

R107

C504

Q107

C503 R401

R601

C601

C207

L401

U401

VIEWED FROM SIDE 2

C417

C418

R421

C434

C427

R419

C506

C310

C507

C303

C304

C408

TP7

R610

TP12

TP8

TP11

L302

C512

C315

C421

C438

C309

C280

C282

C21

C245

C289

R218

C217

C530

C216

C215

C290

C270

C246

C284

C225

C230

L212

R205

C237

C244

C228

R209

L223

CR205

R213

C247

C214

L224

L201

111

C505

C153

R131

C137

C133

C121

CR101

R128

CR103

C86

C201

C235

C231

L202

C250

C257

C256

C267

C266

Q201

R221

C294

R214

R215

R211

U204

C275

S204

R212

CR203

L213

L209

L207

CR207

CR209

CR208

C243

C238

C240

U002

L219

L208

L218

S202

C206

S206

L15

C93

C99

C88

C84

R101

R118

C113

C115

C31

U101

U104

U102

C204

R115

Q108

L107

L105

C135

R126

R116

C19

L10

C10

C87

C119

CR8

CR6

R22

CR9

C18

R23

CR7

R125

R26

C15

C82

C205

L11

C94

R207

CR202

C223

Q202

TP5

C292

R208

C236

R204

R203

C239

CR201

C227

C226

L205

C308

C415

C429

C407

C406

C425

C314

Q601

C107

R111

RT101

R127

C132

C106

R106

R129

111

Q101

C109

L103

C127

L101

C614

C120

C610

R604

C602

C105

C405

C404

C413

C401

C145

L123

R402

C403

C410

R404

R130

C146

O.K. AS IS

O.K. AS MARKED

(

ISS.

REVISION

RLSE.

CORRECTED
AS
MARKED

ILLUSTRATOR

DATE

ENGINEER

DATE

PROGRAM

DISK

MEDIA & COMMUNICATIONS DEPT.

DWG. NO.

EDITOR

DATE

CHECKER

DATE

Illustrator

Astro UHF R1 & 2 RF
8405879V08.G/NLE4560K

3/16/01

MAEPF-27144

MAEPF-27144-O

L32

L35

C85

U001

U106

E104

U105

E101

C103

FL1

VIEWED FROM SIDE 1

C89

L12

C5 C6

C90

C98

L13

C91

C92

S201

C233

C203

C202

L204

L220

L601

L602

C101

C102

C502

Q203

C208

R220

C220

R210

R217

R219

R223

C61

C108

R603

R36

L121

C151

C150

C149

C123

C501

C209

C604

C222

C219

R206

S203

CR206

CR204

C511

C258

C431

L603

R405

C419

CR5

C420

C414

R406

R407

C416

C450

C515

R417

C430

C424

R418

C422

C313

R302

L402

C402

FL401

C253

C428

VR1

L25

R410

C442

C433

C125

C210

C254

U202

C500

R301

R222

C260

C274

C271

C432

R403

C514

R416

C426

R510

C513

C409

C606

R414

R413

R412

C702

R420

C423

VR402

R41

FL402

C605

C255

C279

U203

U201

FL2

C221

L221

L210

L215

L211

L216

L14

L605

C83

R27

C11

C72

C126

C152

C13

C140

L128

S205

L127

L126

C148

C147

CR108

C141

L122

C138

C104

L108

CR109

R112

S207

L37

L34

L31

L30

MAEPF-27143-O

NLE4244P UHF Range 2 Transceiver Board
Electrical Parts List

ITEM

MOTOROLA

PART NUMBER

DESCRIPTION

CAPACITOR, Fixed: pF ±5%; 50V

unless otherwise stated

2113930F15

3.3 pF 50V ±0.25 pF 50V

C2, C3

2113930F12

2.4 pF 50V ±0.25 pF 50V

2113930F36

C5, C6

2113930F20

5.1 pF 50V ±0.25 pF 50V

2113930F28

2113930F15

3.3 pF 50V ±0.25 pF 50V

C10

2113930F29

12 pF

C11

2113931F49

.01 uF

C13

2311049A66

22 uF

C15

2113930F47

C18

-----------------

Not Placed.

C19

2113930F19

4.7 pF 50V ±0.25 pF 50V

C31

2113931F49

.01 uF

C72

2113930F51

100

C82

2113931F49

.01 uF

C83

2113930F51

100

C84

2113931F49

.01 uF

C85

2311049J23

10 uF

C86

2113930F47

C87

2113930F51

100

C88

2113930F45

C89

2113930F19

4.7 pF 50V ±0.25 pF 50V

C90

2113930F26

9.1 pF 50V ±0.25 pF 50V

C91

2113930F28

C92

2113930F09

1.8 pF 50V ±0.1 pF 50V

C93

2113930F17

3.9 pF 50V ±0.25 pF 50V

C94

2113930F27

C98

2113930F51

100

C99

2113930F21

5.6 pF 50V ±0.25 pF 50V

C101

2113930F51

100

C102

-----------------

Not Placed.

C103

2311049J26

10 uF

C104, C105

2113930F51

100

C106

2311049A56

4.7 uF

C107, C108

2113930F51

100

C109

2311049A07

1 uF

C110, C111

2113930F51

100

C112

2311049A07

1 uF

C113

2113930F51

100

C115

2113932K07

.047 uF +80/-20% 16V

C116

-----------------

Not PLaced.

C117

2113930F51

100

C119

2113930F51

100

C120

-----------------

Not Placed.

C121

2113930F51

100

C123

2113932K15

0.1 uF +80/-20% 16V

C125, C126

2311049A54

3.3 uF

C127

-----------------

Not Placed.

C132

2113930F25

8.2 pF 50V ±0.25 pF 50V

C133

2113930F09

1.8 pF 50V ±0.1 pF 50V

C135

2113930F51

100

C137, C138

2113930F51

100

C140

2113931F41

4.7 nF

C141

2113930F51

100

C145

2113930F51

100

C146

-----------------

Not Placed.

C147

2113930F51

100

C148

2113930F11

2.2 pF 50V ±0.25 pF 50V

C149

2113930F27

C150

2113930F23

6.8 pF 50V ±0.25 pF 50V

C151

2113930F17

3.9 pF 50V ±0.25 pF 50V

C152

2113932K15

0.1 uF +80/-20% 16V

C153

2113930F47

C201, C202

-----------------

Not Placed.

C203

2113930F07

1.5 pF 50V ±0.1 pF 50V

C204

2113930F51

100

C205

-----------------

Not Placed.

C206

2113931F33

2.2 nF

C207

2113931F49

.01 uF

C208

2113930F51

100

C209

2113931F49

.01 uF

C210

2113932E07

.022 uF 10% 16V

C211

2113930F51

100

C214

2113930F14

3.0 pF 50V ±.25 pF 50V

C215

2113931F41

4.7 nF

C216, C217

2113930F51

100

C219

2113930F11

2.2 pF 50V ±0.25 pF 50V

C220

2113930F22

6.2 pF 50V ±0.25 pF 50V

C221

2113931F49

.01 uF

C222

2113930F18

4.3 pF 50V ±0.25 pF 50V

C223

2113906C02

C225

2113930F03

1 pF 50V ±0.1 pF 50V

C226

2113930F26

9.1 pF 50V ±0.25 pF 50V

C227, C228

2113930F51

100

C230

-----------------

Not Placed.

C231

2311049A60

10 uF

C233

2113930F51

100

C235

2113930F20

5.1 pF 50V ±0.25 pF 50V

C236

2113930F18

4.3 pF 50V ±0.25 pF 50V

C237

2113930F15

3.3 pF 50V ±0.25 pF 50V

C238

2113930F51

100

C239

2113930F23

6.8 pF 50V ±0.25 pF 50V

C240

2113906C02

C243

2113930F23

6.8 pF 50V ±0.25 pF 50V

C244

2109720D09

.022 uF

C245

2113931F25

1 nF

C246

2109720D09

.022 uF

C247

2311049A05

0.47 uF

C250

2113931F25

1 nF

C253

2311049J23

10 uF

C254

2311049A56

4.7 uF

C255

2113932E07

.022 uF 10% 16V

C256, C257

2113931F49

.01 uF

C258

2311049J11

4.7 uF

C260

2113932K07

.047 uF +80/-20% 16V

C266, C267

2113931F49

10 nF

C270

2113932E07

.022 uF 10% 16V

C271

2311049A56

4.7 uF

C274

2113931F49

.01 uF

C275

2113932K15

0.1 uF +80/-20% 16V

C279, C280

2113932K15

0.1 uF +80/-20% 16V

C282

2113932K15

0.1 uF +80/-20% 16V

C284

2113743A23

0.22 uF 10%

C289, C290

2113930F51

100

C292

2113930F51

100

C294

2113930F51

100

C303

2113932E07

.022 uF 10% 16V

C304

2311049J11

4.7 uF

C308, C309

2113932E07

.022 uF 10% 16V

C310

2311049J11

4.7 uF

C313

2113930F42

C314, C315

2113930F51

100

C401

2113932K03

.033 uF +80/-20% 16V

Summary of Contents for ASTRO Digital Saber

Page 1: ... Digital SABER and R Portable Radios Detailed Service Manual ...

Page 2: ...R Radio 3 1 Analog Mode of Operation 3 2 ASTRO Mode Digital Mode of Operation 3 2 Transceiver Board Overview 3 3 VOCON Board Overview 3 3 4 Radio Power 4 1 Introduction 4 1 General 4 1 B Routing for VHF UHF Transceiver Boards 4 2 B Routing for 800MHz Transceiver Boards 4 3 B Routing for VOCON Boards and Display Modules 4 4 5 VHF UHF Transceiver Board Detailed Theory of Operation 5 1 Introduction 5...

Page 3: ... and Control Top Flex 7 14 Controller Memory Map 7 15 Vocoder Memory Map 7 17 MCU System Clock 7 19 DSP System Clock 7 19 Radio Power Up Power Down Sequence 7 19 8 Secure Modules 8 1 Introduction 8 1 Circuit Description 8 2 Troubleshooting Secure Operations 8 2 Error 09 10 Error 09 90 8 2 Keyload 8 2 9 Troubleshooting Procedures 9 1 Introduction 9 1 Handling Precautions 9 1 Voltage Measurement and...

Page 4: ...r Memory Mapping 7 16 Figure 13 Vocoder Memory Mapping 7 18 Figure 14 Waveform W1 11 1 Figure 15 Waveform W2 11 2 Figure 16 Waveform W3 11 2 Figure 17 Waveform W4 11 3 Figure 18 Waveform W5 11 3 Figure 19 Waveform W6 11 4 Figure 20 Waveform W7 11 4 Figure 21 Waveform W8 11 5 Figure 22 Waveform W9 11 5 Figure 23 Waveform W10 11 6 List of Tables Table 1 Option Select Functions 7 13 Table 2 Standard ...

Page 5: ...ge 2 Transceiver Circuit Board Details and Parts List 13 10 NUF6411K 800 MHz Transceiver Board Schematic Diagram 13 12 NUF6411K 800 MHz Transceiver Circuit Board Details and Parts List 13 13 NTN7749G VOCON Vocoder Controller Board Schematic Diagram Sheet 1 of 2 13 16 NTN7749G VOCON Vocoder Controller Board Schematic Diagram Sheet 2 of 2 13 17 NTN7749G VOCON Vocoder Controller Circuit Board Details...

Page 6: ... Talk button When the radio is transmitting it generates radio frequency RF energy when it is receiving or when it is off it does not generate RF energy Portable Radio Operation and EME Exposure Your Motorola radio is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy EME United Stat...

Page 7: ...n accessory and are not using the radio in the intended use positions along side of the head in the phone mode or in front of the face in the two way radio mode then ensure the antenna and radio is kept the following minimum distances from the body when transmitting Phone or Two way radio mode one inch 2 5 centimeters Data operation using any data feature with or without an accessory cable one inc...

Page 8: ...aration of 6 inches 15 centimeters be maintained between a handheld wireless radio and a pacemaker These recommendations are consistent with those of the U S Food and Drug Administration Persons with pacemakers should ALWAYS keep the radio more than 6 inches 15 centimeters from their pacemaker when the radio is turned ON not carry the radio in the breast pocket use the ear opposite the pacemaker t...

Page 9: ...with a potentially explosive atmosphere unless it is a radio type especially qualified for use in such areas as Intrinsically Safe for example Factory Mutual CSA UL or CENELEC Do not remove install or charge batteries in such areas Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death NOTE The areas with potentially explosive atmospher...

Page 10: ...dentify the unit as being FM Approved for specified hazardous atmospheres This label specifies the hazardous Class Division Group along with the part number of the battery that must be used Depending on the design of the portable unit this FM label can be found on the back or the bottom of the radio housing The FM Approval mark is shown below Do not use any portable radio that has a damaged antenn...

Page 11: ...g accessories and cause an explosion or fire Do not operate an FMRC Approved Product unit in a hazardous location with the accessory contacts exposed Keep the connector cover in place when accessories are not used Turn a radio off before removing or installing a battery or accessory Do not disassemble an FMRC Approved Product unit in any way that exposes the internal electrical circuits of the uni...

Page 12: ...o its original condition Approved by FMRC A repair should be done in an FMRC Approved facility Items not considered as repairs are those in which an action is performed on a unit which does not require the outer casing of the unit to be opened in a manner which exposes the internal electrical circuits of the unit You do not have to be an FMRC Approved Repair Facility to perform these actions Failu...

Page 13: ...oved configurations are listed in the FM Approval Guide published by FMRC or in the product FM Supplement This FM Supplement is shipped from the manufacturer with the FM Approved radio and battery combination The Approval Guide or the Approval Standard Class Number 3605 document for repairs and service can be ordered directly from Factory Mutual Research Corporation located in Norwood Massachusett...

Page 14: ...e model number in which the part is used Parts Ordering 7 00 A M to 7 00 P M Central Standard Time Monday through Friday Chicago U S A Domestic U S A 1 800 422 420 or 847 538 8023 1 800 826 1913 or 410 712 6200 Federal Government TELEX 280127 FAX 1 847 538 8198 FAX 1 410 712 4991 Federal Government Domestic U S A after hours or weekends 1 800 925 4357 International 1 847 538 8023 Motorola Parts Ac...

Page 15: ...able Programmable Typical Model Number Position Position 8 Primary Operation Conventinal Simplex Conventional Duplex Trunked Twin Type Dual Mode Trunked Dual Mode Trunked Duplex Trunked Type I Trunked Type II FDMA Digital Dual Mode TDMA Digital Dual Mode Single Sideband Global Positioning Satellite Capable Amplitude Companded Sideband ACSB Programmable FDMA Frequency Division Multiple Access TDMA ...

Page 16: ...z X X X NUF6411_ 800MHz Transceiver Board 806 870MHz X X X X X X X X X X X X NTN4595_ Nickel Cadmium Ultra High Capacity 1800mAh Large Size Housing Height 3 9 Battery X X X X X X X X X X X X NTN7061_ Accessory Connector Cover X X X X X X X X X X X X NTN7268_ Control Top Chassis X X X X X X X X X X X X NTN7309_ Belt Clip X X X X NTN7637_ Non Display Front Shield X X X X X X X X NTN7638_ Display Fro...

Page 17: ...ten to again and again Host Motorola HC11F1 microcontrol unit U204 see MCU Host Port Parallel memory mapped interface consisting of eight registers in the DSP56001 IC Integrated Circuit IMBE A sub band voice encoding algorithm used in ASTRO digital voice ISW Inbound Signalling Word data transmitted on the control channel from a subscriber unit to the central control unit LSH Low Speed Handshake 15...

Page 18: ...ed for volatile program data memory SSI Synchronous Serial Interface on the DSP56001 consisting of six signals and used for an RX and TX modulated data interface to the ADSIC Standby Mode An operating mode whereby the radio is muted but still continues to monitor data System Central Controllers Main control unit of the trunked dispatch system handles ISW and OSW messages to and from subscriber uni...

Page 19: ...1 14 Notes ...

Page 20: ...ith the radio test mode of operation which is a helpful tool If any basic receive or transmitter parameters fail then the radio should be aligned per the radio alignment procedure Included in other areas of this manual are functional block diagrams detailed theory of operation troubleshooting charts and waveforms schematics and parts list The technician should be very familiar with these sections ...

Page 21: ... nature of the risk then tell the user how to avoid the risk and finally communicate this risk clearly to the person exposed to the risk WARNING Indicates a potentially hazardous situation which if not avoided could result in death or injury To properly word a caution first identify the gravity of the risk then describe the nature of the risk then tell the user how to avoid the risk and finally co...

Page 22: ...nt Transceiver Board Display Keypad Assembly In secure models a hardware encryption module is also included It is advantageous to think of the vocoder controller VOCON board as two separate functional units a vocoder and a controller The vocoder section consists of a Digital Signal Processor DSP Static RAM SRAM FLASH program memory audio power amplifier audio PA and a custom ABACUS DSP support int...

Page 23: ...ce signal the DSP will route the digital voice data to the ADSIC for conversion to an analog signal The ADSIC will then present the signal to the audio power amplifier which drives the speaker For signalling information the DSP will decode the message and pass it to the microcontrol unit When the radio is transmitting microphone audio is passed from the audio power amplifier PA to the ADSIC where ...

Page 24: ... to accommodate 5kHz modulation Final IF filtering is done digitally in the ADSIC The digital back end IC ABACUS consists of an amplifier the second mixer an IF analog to digital converter a baseband down converter and a 2 4MHz synthesis circuit to provide a clock to the ADSIC on the VOCON board The second LO is generated by discrete components external to the IC The output of the ABACUS IC is a d...

Page 25: ...lled by the microcontrol unit which senses the position of the on off volume control knob The DSP performs all signalling and voice encoding and decoding as well as audio filtering and volume control This includes Private Line Digital Private Line PL DPL encode and alert tone generation The IC transmits pre emphasis on analog signals and applies a low pass splatter filter to all transmitted signal...

Page 26: ...pproved Submersible Nickel Cadmium Ultra High Capacity 1800mAh Large Size Housing Nickel Cadmium Ultra High Capacity 1800mAh Large Size Housing FM Approved Nickel Cadmium Ultra High Capacity 1800mAh Large Size Housing FM Approved Submersible Nickel Metal Hydride Medium Capacity 950mAh Small Size Housing Nickel Metal Hydride Ultra High Capacity 1650mAh Medium Size Housing FM Approved Submersible B ...

Page 27: ...ider R222 R223 on the VOCON board so that the microcontrol unit U204 can monitor the battery voltage The switched B voltage supplies power to circuits on the transceiver board The 5 volt regulator U202 is applied this voltage through decoupling component C125 to produce a stable 5 0 volt output Raw B 7 5V which is connected to the ALC IC U101 is switched through the output CATH1 to another 5 volt ...

Page 28: ... amplifier U502 and the ALC IC U504 pin 13 Battery B is fused and then routed to the VOCON board where it enters on connector J1 pins 19 and 20 On secure radios Raw B is also routed to the encryption board so that it can perform key management and other functions independently of SW B The SW B is applied to the 5V regulator U505 to produce a stable 5 0 volt output Regulator U505 supplies those cir...

Page 29: ...NSW B are also supplied to the encryption module through J801 Q207 is also under the control of the microcontrol unit MCU U204 through a port on the SLIC IC U206 This allows the MCU to follow an orderly power down sequence when it senses the SW B is off This sense is provided through the resistor network of R222 and R223 which provides an input to the A D port on the MCU The VOCON board contains t...

Page 30: ...AM U402 Audio PA U401 SRAM U202 EEPROM U201 SLIC IV U206 Switch Q207 On Off Controls Flex SW_B 5V Analog 5V Digital B _CNTL B _Sense Vocoder Controller UNSW_B SW_B J401 J201 Universal Connector Opt_B Display Module 8Kx24 SRAM U403 8Kx24 SRAM U414 256Kx8 FLASH U205 256Kx8 FLASH U210 5V Regulator U409 MAEPF 24335 O HC11F1 MCU U204 ...

Page 31: ...4 6 Notes ...

Page 32: ...transistor inside the VCO buffer The UHF TX VCO uses two active devices one external Q203 and the other internal to the VCO buffer The base and emitter connections of this internal transistor are pins 11 and 12 of U201 The RX VCO is a Colpitts type oscillator with capacitors C235 and C236 providing feedback The RX VCO transistor Q202 is turned on when pin 38 of U204 switches from high to low The R...

Page 33: ...varactor CR203 through a frequency compensation network Resistors R207 and R208 form a potential divider for the higher frequency audio signals In order to cover the very wide bandwidths positive and negative V control voltages are used High control voltages are achieved using positive and negative multipliers The positive voltage multiplier circuit consists of components CR204 C256 C257 and reser...

Page 34: ...signal is passed through the antenna switch CR109 and applied to a bandpass filter comprised of VHF L11 through L14 CR1 through CR9 C4 C2 and C3 or UHF L30 L31 L32 L34 L35 CR6 through CR9 C1 C2 and C3 The bandpass filter is tuned by applying a control voltage to the varactor diodes in the filter CR1 CR9 in VHF and CR6 CR9 in UHF The bandpass filter is electronically tuned by the D A IC U102 which ...

Page 35: ...ch consists of L603 L606 and C608 VHF or L603 C606 and C605 UHF In the ABACUS IC U401 the first IF frequency is amplified and then down converted to 450kHz the second IF frequency At this point the analog signal is converted into two digital bit streams via a sigma delta A D converter The bit streams are then digitally filtered and mixed down to baseband and filtered again The differential output ...

Page 36: ...omputer keys the D A IC to produce a ready signal at U102 pin 3 the ready signal at U102 pin 3 is applied to the TX ALC IC at U101 pin 14 5V the synthesizer sends a LOC signal to the TX ALC IC U204 pin 40 to U101 pin 16 When the LOC signal and the ready signal are both received the TX ALC IC pin 13 sends a control signal to turn on transistor Q101 ALC Circuits Coupler module U104 samples the forwa...

Page 37: ...5 6 Notes ...

Page 38: ...applied to pins 1 and 7 of the VCO varies so does the varactor s capacitance thereby changing the VCO s output frequency The 800MHz VCO is a dual range oscillator that covers the 806 825MHz and the 851 870MHz frequency bands The low band VCO 777 825MHz provides the first LO injection frequencies 777 797MHz that will be 73 35MHz below the carrier frequency In addition when the radio is operated thr...

Page 39: ... prescaler divider by changing the divide ratio via the modulus control line The output of the prescaler is then applied to the loop divider The output of the loop divider is then applied to the phase detector The phase detector will then compare the loop divider s output signal with the signal from U304 that is divided down after it is applied to pin 14 of U302 The result of the signal comparison...

Page 40: ...m IM NF and gain performance Components L201 and L202 match the input gate 1 of the amp to the first preselector while at the same time connecting gate 1 to ground potential The output drain of the amp is pin 3 and is matched to the subsequent receiver stage via components L204 C205 and C222 A supply voltage of 5Vdc is provided to pin 3 via an RF choke L203 and bypass C204 The 5 volt supply is als...

Page 41: ...he output of FL2 is routed to pin 32 of U401 through a matching circuit which consists of L603 C605 and C606 and dc block capacitor C613 In the ABACUS IC U401 the first IF frequency is amplified and then down converted to 450kHz the second IF frequency At this point the analog signal is converted into two digital bit streams via a sigma delta A D converter The bit streams are then digitally filter...

Page 42: ...se to a coupled leg on the coupler The sampled RF signals are applied to diode CR501 for rectification and summing The resultant dc signal is applied to the ALC IC U504 pin 2 as RFDET to be used as an strength indicator of the RF signal being passed through the directional coupler U501 The transmit ALC IC U504 is the heart of the power control loop The REF V line U504 pin 7 a dc signal supplied fr...

Page 43: ...6 6 Notes ...

Page 44: ...f the radio The controller section is the central interface between the various subsystems of the radio It is very similar to the digital logic portion of the controllers on many existing Motorola radios Its main task is to interpret user input provide user feedback and schedule events in the radio operation which includes programming ICs steering the activities of the DSP and driving the display ...

Page 45: ...re to be reprogrammed for future software upgrades or feature enhancements The SRAM is used for scratchpad memory during program execution The SLIC U206 performs many functions as a companion IC for the MCU Among these are expanded input output I O memory decoding and management and interrupt control It also contains the universal asynchronous receiver transmitter UART used for the RS232 data comm...

Page 46: ... schematic diagram The vocoder section of the VOCON board is made up of a digital signal processor DSP U405 24k x24 static RAM SRAMs U414 U403 and U402 256kB FLASH ROM U404 ABACUS DSP support IC ADSIC U406 and an audio PA U401 The FLASH ROM U404 contains the program code executed by the DSP As with the FLASH ROM used in the controller section the FLASH ROM is reprogrammable so new features and alg...

Page 47: ...arallel registers The amplified microphone signal is provided to the ADSIC which incorporates an analog to digital A D converter to translate the analog waveform to a series of data The data is available to the DSP through the ADSIC parallel registers In the converse way the DSP writes speaker data samples to a D A in the ADSIC which provides an analog speaker audio signal to the audio PA Figure 5...

Page 48: ...much more energy efficient It can be noted that input current to the regulator is less than the load current In fact as input voltage to the regulator goes up current supplied to the regulator actually goes down for a constant load Module U409 works off of a clock with a nominal operating frequency of 160kHz kit number NTN7749E or 260kHz kit numbers NTN7749F and NTN7749G This may vary a little bas...

Page 49: ...oon as power is supplied to the circuitry This signal may initially be 2 4 or 4 8MHz after power up It is programmed by the ADSIC through the SBI signal to 2 4MHz when the ADSIC is initialized by the MCU through the SPI bus For any functionality of the ADSIC to exist including initial programming this reference clock must be present SBI is a programming data line for the ABACUS This line is used t...

Page 50: ...SP at a 20kHz rate which represents the sampling rate of the received data The DSP then processes this data to extract audio signaling etc based on the 20kHz interrupt In addition to the SPI programming bus the ADSIC also contains a parallel configuration bus consisting of D8 D23 A0 A2 A13 A15 RD and WR This bus is used to access registers mapped into the DSP memory starting at Y FFF0 Some of thes...

Page 51: ...The transmit signal path follows some of the same design structure as the receive signal path described above in section D refer to Figure 7 It is advisable to read through the section on RX Signal Path prior to this section The ADSIC contains a microphone A D with a programmable attenuator for coarse level adjustment As with the speaker D A attenuator the microphone attenuator value is programmed...

Page 52: ...s the resultant data This data is then transferred to the ADSIC IC on the DSP SSI port The transmit side of the SSI port consists of SC2 SCK and STD The DSP SSI port is a synchronous serial port SCK is the 1 2MHz clock input derived from the ADSIC which makes it synchronous The data is clocked over to the ADSIC on STD at a 1 2MHz rate The ADSIC generates a 48kHz interrupt on SC2 so that a new samp...

Page 53: ... bus The same UART internal to the MCU is used in the controller bootstrap mode of operation This mode is used primarily in downloading new program code to the FLASH ROMs on the VOCON board In this mode the MCU accepts special code downloaded at 7200 baud through the SCI bus instead of operating from program code resident in its ROMs It however must operate in a two wire duplex configuration A vol...

Page 54: ...s In this process the DSP fetches 512 words 1536 bytes of code from the FLASH ROM starting at physical address C000 and moves it into internal P memory This code contains the system vectors including the reset vector It then executes this piece of bootstrap code which basically in turn moves additional code into the external SRAMs A second mode of bootstrap allows the DSP to load this initial 512 ...

Page 55: ...the radio It is the external port or interface to the outside and is used for programming and interfacing to external accessories The signals are outlined in the following diagram The universal connector connects to the VOCON board at J201 through a flex circuit routed down the back of the external housing Connections to the universal connector and J201 on the VOCON board are shown in Figure 9 and...

Page 56: ...l lines The keypad is read though a row and column matrix made up of ROW1 ROW2 ROW3 ROW4 ROW5 ROW6 and COL1 COL2 and COL3 These signals are input to I O ports on the SLIC U206 and individually pulled to a high state through resistors When a key is pressed the respective signals for a single row and a single column are set to logic zero The MCU reads these ports through the SLIC parallel registers ...

Page 57: ...ng Switch S903 is the two position programmable switch typically used for code or clear mode selection It is an input to a control I O with a pull up resistor so the logic defaults high Selecting clear mode pulls this signal to a logic low Appropriate operation is configured by the MCU In addition this switch contains an additional momentary button typically used for emergency This button is conne...

Page 58: ...nal EEPROM are used for non volatile storage of customer specific information More specifically the internal EEPROM space contains transceiver board tuning information and on power down some radio state information is stored in the external EEPROM The SLIC is controlled through sixteen registers mapped into the MCU memory at 1400 14FF This mapping is achieved by the following signals from the MCU ...

Page 59: ...rap mode refer to the section Controller Bootstrap and Asynchronous Buses Figure 12 Controller Memory Mapping 1060 1500 1600 HOST PORT 0000 1800 3fff Ext RAM 1000 1400 F1 INT RAM F1 REGS 0000 1000 2000 3000 4000 5000 6000 7000 8000 9000 A000 B000 C000 D000 E000 F000 FFFF MAP 2 NON MUX 32K COMMON Int EE 0E00 COMMON ROM BANKED ROM EEPROM CONTROLLED BY SLIC RAM EXTERNAL EEPROM CONTROLLED BY F1 F1 REG...

Page 60: ...e DSP XTSC2B is used to address a small portion of external SRAM through the gate U211 XTSCB3 is used as general purpose I O for interrupting the secure module In bootstrap mode the memory map is slightly different Internal EEPROM is mapped at Fe00 FFFF and F1 internal SRAM starts at 0000 03fff In addition a special bootstrap ROM appears in the ROM space from B600 BFFF For additional information o...

Page 61: ...e SRAMs U402 U403 and U414 and internal RAM for execution The DSP never executes program code from the FLASH ROM itself At power up after reset the DSP downloads 512 words 1536 bytes from the ROM starting at C000 and puts it into the internal RAM starting at 0000 where it is executed This segment of Figure 13 Vocoder Memory Mapping 0000 01FF 0FFF 0200 1000 1FFF E000 DFFF 2000 7FFF FFFF 8000 Dy Dx ...

Page 62: ... the system clock from 33MHz to 16 5 or 8 25MHz operation The DSP controls this divider by writing to the ADSIC parallel registers This frequency is determined by the processes the DSP is running and is generally configured to the slowest operating speed possible to reduce system power consumption The additional circuitry of CR402 L403 C459 C467 C491 and C490 make up a crystal warp circuit This ci...

Page 63: ...ying the program code in ROM U404 and returning the ADSIC configuration register checksum Any failures cause the appropriate error codes to be sent to the display If everything is OK the appropriate radio state is configured and the unit waits for user input On power down the user opens the radio on off switch removing the B _SENSE signal from the VOCON board This does not immediately remove power...

Page 64: ...stom encryption integrated circuit IC and an encryption key variable to perform its encode decode function The encryption key variable is loaded into the secure module via the radio s universal side connector from a hand held key variable loader KVL The encryption IC corresponds to the particular encryption algorithm purchased The encryption algorithms and their corresponding kit numbers are KITS ...

Page 65: ...f is not serviceable If the secure module is found to be defective it must be replaced Error 09 10 Error 09 90 The ASTRO Digital XTS 3000 radio automatically performs a self test on every power up Should the radio fail the self tests the display will show E E E ER R R RR R R RO O O OR R R R 0 0 0 09 9 9 9 1 1 1 10 0 0 0 or E E E ER R R RR R R RO O O OR R R R 0 0 0 09 9 9 9 9 9 9 90 0 0 0 accompani...

Page 66: ...portant in low humidity conditions DO NOT attempt to disassemble the radio without observing the following handling precautions 1 Eliminate static generators plastics Styrofoam etc in the work area 2 Remove nylon or double knit polyester jackets roll up long sleeves and remove or tie back loose hanging neckties 3 Store and transport all static sensitive devices in ESD protective containers 4 Disco...

Page 67: ... preferably with 100MHz bandwidth or more The Recommended Test Equipment Service Aids and Tools section in the ASTRO Digital SABER Portable Radios Basic Service Manual outlines the recommended tools and service aids which would be useful Of special note is the REX 4200A Housing Eliminator which allows the technician to open the radio to probe points while in operation In some cases dc voltages at ...

Page 68: ...sum Failure 10 8 02 88 Chart 13 02 88 DSP External SRAM Failure U414 10 9 02 84 Chart 14 02 84 DSP External SRAM Failure U403 10 9 02 82 Chart 15 02 82 DSP External SRAM Failure U402 10 10 02 90 Chart 16 02 90 General DSP Hardware Failure 10 10 09 10 Chart 17 09 10 Secure Hardware Failure 10 11 09 90 Chart 18 09 90 Secure Hardware Failure 10 11 001 Chart 31 VHF UHF Frequency Generation Unit FGU 10...

Page 69: ... internal RAM is defective the radio will get lost testing the external RAM 8 Display Self Test these routines use subroutines too It is almost impossible to display an error message if the internal RAM is defective 9 Begin MCU host µC ROM checksum test Fail 01 81 if this routine fails 10 Begin DSP power up tests The MCU will try this five times before it fails the DSP test Check for HF2 Fail 02 9...

Page 70: ...cond part of the DSP version number Fail 02 90 if 100ms 11 Display errors if a fatal error exists at this point 12 Checksum the codeplug Test internal codeplug checksums Fail 01 92 if failure Test external codeplug checksums Error 01 82 if non fatal error fail 01 82 if fatal error 13 Power up the EMC if it is enabled in the codeplug 14 Turn off the green LED 15 Start up operating system ...

Page 71: ...5 0Vdc 5 0Vdc 0 7 1 0Vdc 0 7 1 0Vdc U204 U204 DCLK 33 0000MHz a a This is number may vary due to the operating mode of the radio when it is measured The ADSIC contains a divider which may divide the clock by a modulus of 2 Therefore the actual frequency measured may be clock 2n The most common frequency will be 16 5000MHz nominal 500ppM U406 ODC 2 4MHz 30ppM ABACUS ECLK IRQB 1 8432MHz 8kHz b b Thi...

Page 72: ...arts of the circuitry These waveforms are for reference only the actual data depicted will vary depending upon operating conditions Waveforms Figure 14 Waveform W1 103 Acquisitions Tek stopped T 1 Ch1 T M 200us Ch1 680mV W1 Switched Regulator Clock Out Trace 1 U409 LX measured with radio in standby mode with UNSW_B at 7 5VDC 2 00V MAEPF 24376 O ...

Page 73: ...Hz Ch1 Freq 19 991kHz Low signal amplitude 5 00V 5 00V 1 5 00V Ch2 MAEPF 24377 A Note 1 Typically SCKR is a 2 4 MHz clock In low power modes as shown here SCKR is 600KHz Figure 16 Waveform W3 T T 2836 Acquisitions Tek stopped T 3 Ch1 Ch2 Ch3 2 1 M 5 00us Ch1 2 2 V W3 DSP SSI Port TX mode CSQ Trace 1 SC2 Trace 2 STD Trace 3 SCK 1 2MHz Ch1 Freq 47 856kHz Low signal amplitude 5 00V 5 00V 5 00V MAEPF ...

Page 74: ...4 610kHz 2 00V Figure 18 Waveform W5 34513 Acquisitions Tek stopped T 3 Ch3 1 2 Ch1 Ch2 M 5 00us Ch1 2 2 V Note 2 Since these signals are a differential current loop these voltages are very low MAEPF 24380 A 2 W5 ABACUS ADSIC Interface Receiving 1KHz tone 3KHz deviation 60dbm Trace 1 IDC 2 4MHz Trace 2 DOUT TRACE 3 DOUT Ch1 Freq 2 251920 MHz Low resolution 2 00V 500mV 500mV T ...

Page 75: ... bus Ch1 Freq Hz No period found Ch1 Ch3 5 00V 5 00V 5 00V MAEPF 24381 A T T T Figure 20 Waveform W7 103 Acquisitions Tek stopped T 2 Ch2 1 3 4 M 200us Ch1 2 20 V W7 Receive audio Receiving 1KHz tone 3KHz deviation 60dBm Trace 1 IRQB DSP 8KHz Trace 2 SD0 C404 Trace 3 SPKR_COMMON Trace 4 INT_SPKR Ch1 Freq 7 9118kHz Low signal amplitude 5 00V 2 00V 200mV 2 00V Ch1 Ch3 Note 3 Actual level is dependen...

Page 76: ... DSP 8KHz Trace 2 MODIN Trace 3 EXT MIC node C484 R408 Trace 4 MAI node R492 U401 MICAMPOUT Ch1 Freq 7 9872kHz Low signal amplitude 5 00V 20 0mV MAEPF 24383 A 500mV 500mV Ch1 Ch3 Ch2 T T Figure 22 Waveform W9 1 Acquisitions Tek stopped T 1 Ch1 T 2 M1 00ms Ch1 4 52 V W9 Power Down Reset Trace 1 5V U407 VDD Trace 2 Reset U407 OUT 2 00V Ch2 MAEPF 24384 O 2 00V T ...

Page 77: ...11 6 Figure 23 Waveform W10 493 Acquisitions Tek stopped MAEPF 24385 O T 1 Ch1 T M 200ns Ch1 1 64 V W10 ADSIC 2 4 MHz Reference Trace 1 IDC U406 Ch1 Freq 2 4038MHz 2 00V ...

Page 78: ... Table 3 J201 VOCON Board to Universal Connector J201 Pin Description To From UC Pin 1 Removed 2 n c 3 n c 4 LH DATA BOOT DATA OUT U208 1 3 5 EXT MIC U411 6 4 6 SB9600 BUSY U204 J3 6 7 OPT SEL 1 U206 G3 EXT PTT Q210 7 8 RS232 DATA IN U206 B2 12 9 OPT SEL2 KEYLOAD U206 C6 10 10 KEYFAIL RTSIN U206 J8 J801 15 9 11 SPKR COMMON U401 A3 U204 B3 J701 14 1 12 EXT SPKR U401 A5 U204 C4 2 13 OPTB BOOT SEL VP...

Page 79: ...3 ROW1 U206 J3 14 SPKR COMMON U401 A3 J201 11 U401 A3 U204 B3 15 INT SPKR U401 B2 Table 6 J1 J401 Transceiver Board to VOCON Board J1 J401 Pin Description Transceievr Board VOCON Board 1 DOUT U401 4 U406 H3 2 DOUT U401 5 U406 K3 3 GROUND 4 SBI U401 6 U406 J3 5 GROUND 6 POR RSSI U305 5 U503 19 U407 1 7 DA SEL DA CE U503 16 U204 H5 8 ODC 2 4MHz U401 7 U406 F3 9 MOSI DATA U503 18 U302 2 U304 25 10 SP...

Page 80: ...6 J8 16 n c 17 n c 18 n c 19 n c 20 UNSW B J401 19 21 GROUND 22 GROUND 23 n c 24 n c 25 n c Table 8 J901 VOCON Board to Control Top Flex J901 Pin Description To From 1 UNSW B J401 19 2 TG1 PROG SWITCH U204 D3 3 VOL U204 C3 4 EMERG U204 A3 5 5V U409 12 6 INT PTT U204 H2 7 RTA3 U206 H1 8 GRN LED DRIVER U206 E8 9 TG2 A B SWITCH U204 A2 10 B SENSE 11 RTA0 U206 F3 12 RED LED DRIVER U206 H9 13 RTA1 U206...

Page 81: ...12 4 Notes ...

Page 82: ... 6881076C10 68P81076C10 A Motorola 8000 West Sunrise Boulevard Fort Lauderdale Florida 33322 ...

Page 83: ...IC Initialization Failure 10 6 Chart 9 01 88 MCU Host µC External SRAM Failure 10 7 Chart 10 01 92 Internal EEPROM Checksum Failure 10 7 Chart 11 02 A0 ADSIC Checksum Faiure 10 8 Chart 12 02 81 DSP ROM Checksum Failure 10 8 Chart 13 02 88 DSP External SRAM Failure U414 10 9 Chart 14 02 84 DSP External SRAM Failure U403 10 9 Chart 15 02 82 DSP External SRAM Failure U402 10 10 Chart 16 02 90 General...

Page 84: ... Messages Error Message on RSS Either Bad Display See Chart C 25 or Radio Power Up Failure See Chart C 3 Chart 2 VHF UHF Radio Main Troubleshooting Chart NO MAEPF 24395 A Is There TX Power Is TX Deviation OK START NO YES YES NO Error Message Display Model NO YES See Table T1 Power up Self Check Error Codes Use RSS to display Error Messages Error Message on RSS Either Bad Display See Chart C 25 or ...

Page 85: ...s not inhibited or unable to check Use RSS to clear radio inhibit Yes No ReFLASH host µC code Error ReFLASHING host µC code Reverify inital problem Initial problem persists Yes No Yes No End Error in Bootstrapping host µC Yes No Refer to section on Failure to Bootstrap Chart C 4 Refer to host µC ROM checksum error FAIL 01 81 Chart C 6 When reFLASHing host code there are two fundamental modes of fa...

Page 86: ...is correct Isolate open and repair or adjust VPP as required No Yes Verify MODA and MODB of U204 are pulled to a logic low state 8VDC MODA and MODB are correct Repair inverter circuit consisting of VR207 and Q204 No With the host µC out of reset and prior to any downloading through the serial bus Verify U204 PD1 BOOT_DATA_OUT is logic low and U204 PD0 is logic high BOOT_DATA_IN Yes PD0 and PD1 are...

Page 87: ... J401 Yes No Verify SW_B at input to U410 Replace U410 Repair connections Yes MAEPF 24399 O No Is the output on U202 5VDC Signals verified Chart 6 01 81 Host ROM Checksum Failure Synopsis This failure indicates the Host ROM program code is incorrect It is implied that the host processor found and executed enough valid code at power up to get to the point of verifying the rest Basic failure modes a...

Page 88: ...cause of this failure would be the improper operation of the RESET circuit during a radio power down sequence 2 The decoding logic comprised of U204 and U206 is not working properly due possibly to circuit opens or shorts or that a failure of one or more of these ICs has occurred 3 U201 has failed Chart 8 01 84 SLIC Initialization Failure Fail 01 84 SLIC Init Failure Verify standard bias per table...

Page 89: ...ood Repair connections Yes No Signals verfied During radio power up Self Test verify activity transisitons from high to low on U202 CS No Yes Signals verfied Replace U202 MAEPF 24665 B No Yes No Yes Signals verfied Replace U211 Replace U204 Replace U206 Verify operation of U204 and U211 logic AND gate During radio power up Self Test verify activity transisitons from high to low on U211 IN_B During...

Page 90: ...ig W10 Clock Present Verify SPI programming signals per Fig W6 initiated by mode change Programming signals verified Verify U406 RSTx goes high on initial power up Reset high Replace U406 Verify clock at ABACUS source and or fix connection Verify SPI operation by verifying programming of synthesizer IC initiated by a channel change If pass find connection problems to U406 A failure indicates a sof...

Page 91: ...nnections good Repair opens Yes No Check for ADSIC programming checksum error Chart 14 02 84 DSP External SRAM Failure U403 Fail 02 84 DSP SRAM U403 Failure Synopsis On power up the DSP writes data to the device and then verifies the data This failure indicates the DSP SRAM failed this pattern checksum test Besides utiling decoding logic from the DSP U405 U403 has additional logic in the form of R...

Page 92: ...2 90 persists Verify Host Port Use ohmmeter to electrically verify following signal connections to source IC Signal U405 Source H0 H7 U204 HA0 HA2 U204 HR W U204 HEN U204 RESET U204 On power up verify transitions on HEN from high to low indicating DSP is being selected Synopsis On power up the host µC sends several handshake commands through the host interface to the DSP system to coordinate the p...

Page 93: ..._SCK U204 EMC_WAKEUP U206 EMC_EN U206 EMC_REQ U206 Signals good No Yes MAEPF 24411 A Replace secure module Replace respective source IC or VOCON board Chart 18 09 90 Secure Hardware Failure Signals good No Yes Replace secure module Replace respective source IC or VOCON board Repair opens Fail 09 90 Secure Hardware Failure Verify connections to secure module through J801 Connections good No Yes Syn...

Page 94: ...LOAD message displayed Correct equipment Yes No With KVL attached to radio and radio on inititate a keyload by pressing P T T on the keyloader and look for activity on J801 15 Activity Yes Verify connection of RTSIN KEYFAIL from the universal connector pin 9 and from J206 to J801 15 Verify connection across J801 Good connection Good connection Repair connection Replace secure module Yes No No Yes ...

Page 95: ...es a logic low at on COLx and one ROWx Yes Replace keypad module if J701 checks good Chart 22 Volume Set Error Synopsis This chart relates to a failure in volume set knob Basic Failure modes are as follows 1 Failure in control top ptt flex circuit 2 Bad connection 3 Defective volume pot 4 Defective A D port in host µC 5 Problem in receive audio circuit Volume Set Error Using voltmeter measure volt...

Page 96: ...operation directly at S902 S902 checks good Replace S902 Repair flex or connections as needed Yes MAEPF 24402 A No Chart 24 Top Side Button Error Synopsis This chart relates to a failure in reading the buttons Top Top Side Side Button 1 or Side Button 2 Basic Failure modes are as follows 1 Failure in flex circuit consisting of R902 R903 R904 R201 2 Bad connection 3 Defective switch 4 Defective A D...

Page 97: ... as a uint Basic Failure modes are as follows 1 Non display model radio 2 Bad connection 3 Defective µC No Display Verify display model with RSS Verify signal activity on J601 2 and J601 1 during mode select changes Activity Verify J601 connections and bias Yes Yes No No Wrong model Fix with RSS Yes No J601 checks Repair J601 MAEPF 24403 A Replace display module ...

Page 98: ... present Replace U406 No Fig W8 Trace 3 present Yes Yes Yes Fig W8 Trace 4 present Yes No Verify signals at U401 are Signal Logic EXT INT_SPKR 0 MICEN 1 Control signals correct Verify 1KHz signal at U401 EXTMICIN Yes No Replace U401 Audio signal present at input to U401 Yes No Verify MUX control voltages Signal Logic U408 4 0 U412 4 1 MUX control voltages check Check and repair Q402 inverter circu...

Page 99: ...Deviation No TX Deviation VHF UHF Transceiver Audio at pin 15 of J1 Set radio to test mode CSQ Connect radio to R4005B test box or equivalent and inject a 1KHz mic signal with amplitude sufficient to provide 3KHz deviation about 11mV RMS PTT radio using external PTT switch Verify signals per Figs W8 and W10 No Yes Audio voltage at U204 5 Check C303 continuity of J1 No Replace U204 No Yes Yes Audio...

Page 100: ...en ADSIC and ABACUS ICs Repair as necessary If connection good replace U406 No Yes Fault lies with transceiver board Refer to appropriate section Chart C 30 Verify signals per Fig W7 at points indicated Signals present Replace Speaker Flex assembly after verifying continuity of signal paths Fig W7 Trace 1 present 1 Yes No 1 Replace U406 Fig W7 Trace 2 present No Yes Verify signals per Fig W2 at po...

Page 101: ...ctor OK IF signal present 2 1Mhz Check at Pin 19 U401 Check FGU Chart C 31 VHF UHF C 32 800MHz Activity On U401 Sel Pin Check J1 If OK Check No Rx Audio Chart C 29 YES NO NO NO NO YES YES YES NO NO YES YES NO YES YES NO NO YES YES YES NO NO OR WEAK RF YES VHF UHF 800MHz YES NO NO NOTE INJECT MODULATED ON CARRIER FREQUENCY SIGNAL AS REQUIRED MAEPF 24386 O IF FREQS 45 15 VHF 73 35 UHF 800MHz Check f...

Page 102: ...302 VDC at U302 Pin 21 28 38 OK Refer to DC Switch Chart C 35 Check Continuity Between U304 24 J401 5 U304 22 J401 15 U304 24 J401 8 13V at U302 Pin 36 16 8MHz at U302 Pin 14 VDC at U308 9 13 14 23 16 8MHz at U304 Pin 10 No 2 1MHz 2 1MHz at U302 Pin 10 2 5V at U302 Pin 14 Check R306 C309 VDC at CR301 Pin 6 OK Go to VCO TX RX Unlock Routine Chart C 34 2 5V at U302 Pin 8 9 Check C301 C302 C350 CR301...

Page 103: ...R203 R204 R205 R209 Q202 Replace U201 Replace U201 Replace U201 Replace U201 Check L221 U204 4 4V at U201 Pin 5 Is C219 C220 C222 C223 C226 C227 C270 CR203 open 0 1V at U201 Pin 14 Is L215 L216 L211 L213 open UHF Voltages at U201 pins 11 and 12 ok Voltages at Q203 ok Check R209 R206 R217 R219 R210 Check R206 R217 R219 R210 R203 if ok replace Q203 Replace components go to VEE crossover freq tune pr...

Page 104: ... U307 1 7 Change U307 5VDC U302 38 806 825MHz Check Continuity Between U302 38 U303 6 Refer to FGU Chart C 32 YES NO YES NO NO YES YES YES YES NO Check C310 if OK Change U302 Refer to Chart DC Switch C 37 Check L301 C377 if OK Change U303 NO NO Chart 35 800MHz DC Switch 800MHz DC Switch Voltage at Q503 4 Check continuity between U305 and Q503 Refer to Chart C 5 on DC Supply Problem Yes No Yes No N...

Page 105: ...109 and L122 For Open Connections YES YES YES YES YES NO YES NO NO YES NO NO NO Replace U102 Replace U202 No T5 Voltage at Q111 Pin 3 collector Voltage at U202 Pin 8 Replace U102 Go to Chart C 26 Replace U202 Check Fuse Flex Connection J1 17 19 20 Volume Switch Less than 4 8V at Q111 Pin 1 base 5V at U102 Pin 1 Voltage at U202 Pin 8 Check conn J1 R101 and header good 5V at Pin 3 of U102 Replace U2...

Page 106: ...eck U503 D A IC VDC U502 2 5 0 37 VDC U504 12 VDC U502 1 VDC U502 3 4 VDC Base Q501 VDC U502 7 VDC U504 21 VDC U504 2 VDC U503 11 Check U504 CR501 R505 C503 R503 R506 OHM Q501 VDC U504 7 Check U504 ALC IC Check U503 D A IC VDC at Q503 RF Input Drive U502 1 1dB B VDC U502 6 Check Continuity Between U504 13 J3 20 Change ALC U504 YES YES NO See Chart C 32 FGU Unlock Check U503 D A IC Check R501 MAEPF...

Page 107: ...Found Go To FGU Troubleshooting Chart C 31 YES YES YES YES YES NO Go to DC Switch Routine Chart C 36 Check B E1 E101 VHF E1 E2 E3 E101 E104 UHF and Power Supply 7 5V at U105 Pin 2 4 Voltage at U105 Pin 3 RF Voltage at U105 Pin 1 7V at Collector of Q101 5V at U101 Pin 16 7 5V at Emitter of Q101 Check L102 L103 UHF L102 L130 VHF Voltage at Q101 Base is B Less 0 7V Go to FGU No Lo Injection TX Not Lo...

Page 108: ...20 MHz UHF2 Is VCTRL 11 0V Program the New Crossover Frequency into the Codeplug Is VCTRL 2 5V to 3 5V Replace C240 or C223 Use Up Down Buttons to Tune Crossover Frequency w RSS VHF 3 0 2 7 UHF1 2 7 2 4 UHF2 2 7 2 7 C240 RX C223 TX Replace C240 or C223 VHF 2 4 2 0 UHF1 2 0 1 6 UHF2 2 0 2 0 C240 RX C223 TX Enable VEEE Crossover Point Tune Mode w RSS YES NO NO YES A complete part description and Mot...

Page 109: ...13 1 Block Diagrams Schematics Electrical Parts Lists and Circuit Board Details 13 ...

Page 110: ...P PTT FLEX DISPLAY FLEX SPKR MIC FLEX TO UNIVERSAL CONNECTOR J201 J701 J601 J901 DISPLAY KEYPAD ASSEMBLIES DISPLAY KEYPAD MICROPHONE SPEAKER TX RX 16 8MHz DC CONTROL VHF AND UHF ONLY DC CONTROL VHF AND UHF ONLY VCO CONTROL MATING PLUG J401 J1 TX 5V THERM INT CAP OUT REF V V CON CATH 1 TX 1 ANODE 2 RT BIAS RX 1 TX 2 CATH 2 MAEPF 24372 O INT CAP IN RF DET GND ANODE 1 RX 5V BIAS EN BIAS B 2 ALC 62U72...

Page 111: ...13 3 NLD8892R VHF Transceiver Board Schematic Diagram 63B81094C71 O ...

Page 112: ...30 C161 2113932K15 0 1 uF 80 20 16V C163 C164 2113930F51 100 C202 2113930F27 10 C203 2113930F20 5 1 pF 50V 0 25 pF 50V C204 2113931F13 330 C205 2113930F14 3 pF 50V 0 25 pF 50V C206 2113931F20 620 C207 2113930F07 1 5 pF 50V 0 1 pF 50V C208 2113930F22 6 2 pF 50V 0 25 pF 50V C209 2113932K15 0 1 uF 80 20 16V C210 2113932E07 022 uF 10 16V C211 2113931F13 330 C212 Not Placed C214 2113930F21 5 6 pF 50V 0...

Page 113: ... 2462587T38 22 nH L220 2462587T17 150 nH L221 L222 2462587Q42 390 nH L223 2462587T16 120 nH L225 2462587Q20 2 2 uH L401 2462575A16 3 9 uH L402 2462587V38 220 nH L601 2405452C61 1 1 uH L603 2405452C64 1 5 uH L604 2405452C62 1 2 uH L605 2405452C60 1 uH TRANSISTOR See Note 1 Q101 4805128M27 NPN Q107 4805921T02 Switching Q108 4802245J10 Dual NPN Q110 4813822A10 PNP Q111 4805128M16 PNP Q201 4802245J15 ...

Page 114: ...13 6 NLE4560K UHF Range 1 Transceiver Board Schematic Diagram REFER TO BOM FOR A SPECIFIC KIT FOR CORRECT PART LIST 63B81094C73 O ...

Page 115: ...5 pF 50V 0 1 pF 50V C31 2113931F49 01 uF C72 2113930F51 100 C82 2113931F49 01 uF C83 2113930F51 100 C84 2113931F49 01 uF C85 2311049J23 10 uF C86 2113930F47 68 pF C87 2113930F51 100 C88 2113930F45 56 C89 2113930F22 6 2 pF 50V 0 25 pF 50V C90 2113930F31 15 C91 2113930F28 11 C92 2113930F18 4 3 pF 50V 0 25 pF 50V C93 2113930F20 5 1 pF 50V 0 25 pF 50V C94 2113930F29 12 C098 2113930F51 100 C099 2113930...

Page 116: ... nH L210 2405619V01 18 1 nH L211 2405619V05 12 nH L212 2462587V26 22 nH L213 2462587T22 390 nH L215 2462587T22 390 nH L216 2462587T05 15 nH 10 L218 2462587T22 390 nH L219 2462587T37 18 nH L220 2462587T39 27 nH L221 2462587T22 390 nH L223 2462587Q42 390 nH 10 L224 2462587T40 33 nH L302 2462587Q42 390 nH 10 L401 2462575A16 3 9 uH 10 L402 2462587V37 180 nH L600 L601 2405452C59 910 nH L602 2405452C64 ...

Page 117: ...13 9 NLE4244P UHF Range 2 Transceiver Board Schematic Diagram REFER TO BOM FOR A SPECIFIC KIT FOR CORRECT PART LIST 63B81094C73 O ...

Page 118: ...C18 Not Placed C19 2113930F19 4 7 pF 50V 0 25 pF 50V C31 2113931F49 01 uF C72 2113930F51 100 C82 2113931F49 01 uF C83 2113930F51 100 C84 2113931F49 01 uF C85 2311049J23 10 uF C86 2113930F47 68 C87 2113930F51 100 C88 2113930F45 56 C89 2113930F19 4 7 pF 50V 0 25 pF 50V C90 2113930F26 9 1 pF 50V 0 25 pF 50V C91 2113930F28 11 C92 2113930F09 1 8 pF 50V 0 1 pF 50V C93 2113930F17 3 9 pF 50V 0 25 pF 50V C...

Page 119: ...26 22 nH L207 2462587V36 150 nH L208 L209 2462587T22 390 nH L210 2405619V03 15 1 nH L211 2405619V07 9 nH L212 2462587V25 18 nH L213 2462587T22 390 nH L215 2462587T22 390 nH L216 2462587T05 15 nH L218 2462587T22 390 nH L219 2462587T37 18 nH L220 2462587T12 56 nH L221 2462587T22 390 nH L223 2462587Q42 390 nH L224 2462587T42 47 nH L302 2462587Q42 390 nH L401 2462575A16 3 9 uH L402 2462587V37 180 nH L...

Page 120: ...13 12 NUF6411K 800 MHz Transceiver Board Schematic Diagram 63B81094C75 O ...

Page 121: ... 10 16V C322 2109720D14 0 1 uF C323 2113932E07 022 uF 10 16V C324 2113743A13 047 uF C325 2113931F21 680 C328 2113930F51 100 C329 C330 2109720D14 0 1 uF C339 2113930F29 12 C340 2113932K15 0 1 uF 80 20 16V C341 2113932E07 022 uF 10 16V C342 2113930F19 4 7 pF 50V 0 25 pF 50V C344 2113932E07 022 uF 10 16V C345 2113932K15 0 1 uF 80 20 16V C347 2113932E07 022 uF 10 16V C348 2311049J23 10 uF C349 2113932...

Page 122: ...101 0662057A90 51k R202 0662057A01 10 R204 0662057A25 100 R304 0662057A90 51k R305 0662057A56 2k R306 0662057A65 4 7k R307 0662057A49 1k R309 0662057A90 51k R310 0662057A49 1k R311 0662057A77 15k R314 0662057A18 51 R315 0662057A87 39k R326 thru R328 0662057C01 0 050 R401 0660079U18 5 1 R402 0662057B08 270k R403 0662057A83 27k R404 0662057A73 10k R405 0662057A13 33 R406 0662057A69 6 8k R407 0662057...

Page 123: ... PE3 EMERG J901 4 D3 19 PE4 TG1 PROG SWITCH J901 2 A2 24 PE5 TG2 A B SWITCH J901 9 B3 26 PE6 SPKR COM MON U401 A3 J201 11 J701 14 C4 28 PE7 EXT SPKR U401 A5 J 201 12 B7 39 4XECLK 7 3726MHz U206 A3 J7 63 PD0 BOOT DATA IN RXD J201 15 U206 G6 64 PD1 BOOT DATA OUT TXD J201 4 U208 H6 65 PD2 MISO J801 7 J6 66 PD3 MOSI J601 1 J801 8 G5 67 PD4 SPI SCK J601 2 J801 9 H5 68 PD5 DA SEL J401 7 C5 33 MOD A Q204...

Page 124: ...13 16 NTN7749G VOCON Vocoder Controller Board Schematic Diagram Sheet 1 of 2 MAEPF 27100 O SHEET 1 ...

Page 125: ...13 17 NTN7749G VOCON Vocoder Controller Board Schematic Diagram Sheet 2 of 2 MAEPF 27100 O SHEET 2 ...

Page 126: ...A07 1 uF C440 2113932K15 0 1 uF 80 20 16V C441 2311049J12 4 7 uF C442 C443 2113930F09 1 8 pF 50V 0 1 pF 50V C444 thru C456 2113932K15 0 1 uF 80 20 16V C457 2113931F13 330 C458 2113932K15 0 1 uF 80 20 16V C459 2113930F03 1 pF 50V 0 1 pF 50V C460 2311049J12 4 7 uF C461 C462 2113932K15 0 1 uF 80 20 16V C463 2311049C08 33 uF 20V 10 C464 C465 2311049J12 4 7 uF C466 2113932K15 0 1 uF 80 20 16V C467 2113...

Page 127: ...57A73 10k R424 0662057A63 3 9k R425 0662057A69 6 8k R426 R427 0662057B02 150K R428 R429 0662057A81 22K R430 0662057A39 390 R431 0662057C03 1 R432 0662057A73 10K R433 0662057A57 2 2K R434 0662057A39 390 R435 0662057A73 10K R436 0662057B14 470K R437 Not Placed R438 R439 0662057A73 10k R440 Not Placed R441 0662057A73 10k R442 Not Placed R443 0662057B47 0 050 R444 0662057A73 10k R445 0662057B47 0 050 ...

Page 128: ... D22 D21 XTAL EXTAL SC0 H3 H2 H1 GND H0 RXD TXD SCLK SCK GND VCC SC1 SRD BG BR WR RD X Y DS SC2 STD DSP56001ZP33 DSP 29V08 WAUDWL9201 JAPAN SLIC IV P3 57W06 0 TXPG028NP06 ATWLYYWWW D2 RXDIN D6 D5 D1 D4 IRQB HC11RST D7 AVB VDD3 VSS3 PH0 CEB PH1 PH2 PH3 RTSBOUT SCNSLB PH4 BOOTRX PH5 MAEPF 24370 O A15IN PL5 PK5 PK6 PK7 PM3 PM2 PM1 PM0 VSS2 VDD2 ROM1CSB ROM2CSB EE1CSB EE2CSB A14OUT A15OUT PL6 PL7 PH7 ...

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