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Table Of Contents - Tait TM9100 Service Manual

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Table of Contents

Table Of Contents3

Scope Of Manual5

Hardware And Software Versions5

Enquiries And Comments5

Updates Of Manual And Equipment5

Associated Documentation6

Publication Record7

Tm9100 Service Manual8

Chapter 1 Description Of The Radio11

Product Overview13

Frequency Bands14

Rf Output Power14

Accessories Overview15

Product Codes16

Compliance Information17

Specifications18

Typical Current Consumptions By Radio While Not Transmitting21

Typical Current Consumptions By Radio Body While Transmitting21

Mechanical Design23

Components Of The Radio Body25

Components Of The Main-Board Assembly27

Heat-Transfer Block28

Control Head Description29

Front Panel Assembly29

Concealed Microphone30

Components Of The Control Head31

Control-Head Board32

Control-Head Loom32

Adapter Flange32

User Interface33

Connectors Of The Radio Body (25W Radio)35

Connectors Of The Control Head36

Power Connector37

Auxiliary Connector38

Internal Options Connector39

Provision For External Options Connector39

Control-Head Connectors40

Microphone Connector41

Hardware And Software Architecture42

Hardware Architecture Of The Main Board43

Software Architecture44

Software Modules44

Software Start-Up45

Software Shutdown46

Programming And Calibration Files46

Software Upgrades46

Operation In Receive Mode47

Transceiver Operation In Analog Mode48

Transceiver Operation In Digital Mode49

Quadrature Demodulator50

Automatic Gain Control50

Noise Blanking50

Digital Baseband Processing51

Noise Squelch51

Rssi/Calibration51

Audio Processing And Signaling52

Data And Signaling Decoders (Analog Mode)52

Rx Burst Builder (Digital Mode)52

Rx Vocoder (Digital Mode)53

Arbitration (Digital Mode)53

Output To Speakers/Volume Control Configurations53

Operation In Transmit Mode54

Microphone Input55

Analog Processing Of The Microphone Input55

Automatic Level Control55

Tx Vocoder (Digital Mode)55

Tx Vocoder Fec (Digital Mode)56

Tx Burst Builder (Digital Mode)56

Arbitrator (Digital Mode)56

C4Fm Modulator (Digital Mode)56

Frequency Synthesizer57

Frequency Control Loop57

Operation Of Control Loop57

Frequency Generation58

Fast Frequency Settling58

Rf Transmitter59

Frequency Acquisition Of Rf Pll59

Frequency Acquisition Of Fcl59

Power Control60

Circuit Descriptions63

Main Board Hardware Architecture64

Transmitter Circuitry65

Power Amplifier65

Power Control Loop65

Block Diagram Of The Transmitter Circuitry66

Directional Coupler67

Temperature Sensor67

Receiver Circuitry68

Front-End Circuitry68

Frequencies Of If Stages68

Block Diagram Of The Receiver Circuitry69

Channel Filtering70

Received Signal Strength Indication70

Front-End Agc Control70

Frequency Synthesizer Circuitry71

Power Supplies71

Performance Requirements71

Effect Of Tuning Range71

Block Diagram Of The Frequency Synthesizer Circuitry72

Reference Frequency73

Phase-Locked Loop73

Active Loop Filter73

Speed-Up Techniques74

Frequency Control Loop Description75

Elements Of Fcl Circuitry75

Circuit Operation75

Fcl Modulation75

Codec And Audio Circuitry76

Block Diagram Of The Codec And Audio Circuitry77

Summing Circuit78

Buffer Amplifier78

Audio Power Amplifier78

Microphone Signals78

Auxiliary Audio Outputs79

Power Supply Circuitry80

Supply Protection80

Supervisory Circuit80

Internal Power Supplies80

Block Diagram Of The Power Supply Circuitry81

Power-Sense Options82

Block Diagram Of Hardware Links Lk1 To Lk482

Configuration Of Hardware Links And Gpi Lines For Power-Sense Options83

Battery Power Sense84

Auxiliary Power Sense84

Internal-Options Power Sense84

No Power Sense84

Operation In Emergency Mode85

Connector Power Supply Options85

Interface Circuitry86

Bi-Directional Lines86

Output Signals86

5-Volt Regulator86

Block Diagram Of The Interface Circuitry87

Digital Board88

Input Signals88

Esd Protection88

Hookswitch Detection88

Block Diagram Of The Digital Board89

Control-Head Board Description90

Block Diagram Of The Control-Head Board91

Volume Control92

Keypad Backlighting92

Chapter 2 Servicing The Radio93

Repair Levels And Website Access97

General Information97

Tools, Equipment And Spares100

Torque-Drivers100

Tools For Smt Repairs100

Test Equipment100

Servicing Precautions102

Use Of Torque-Drivers102

Non-Scratch Bench Tops102

Sealing Of Radio102

Esd Precautions103

Storage And Transport Of Items103

Anti-Static Workbenches103

Transmitter Issues104

Test Equipment Setup105

Connect Equipment105

Settings For Receive Tests105

Settings For Transmit Tests105

Replacing Board Components107

Identify Pcb Information107

Identify Replacement Component107

Obtain Replacement Component107

Shielding Cans And Connectors108

Shielding Cans And Connectors (Bottom Side Of Main-Board Assembly)109

Smt Repair Techniques110

Locations Of Capacitors C548 And C565 And Inductors L601 And L602111

Computer-Controlled Test Mode (Cctm)112

Terminal Program For Cctm112

Invoking Cctm112

Cctm Commands In The Audio Category113

Cctm Commands In Radio-Information, Radio-Control, System Categories114

Cctm Commands In The Frequency-Synthesizer And Receiver Categories115

Cctm Commands In The Transmitter Category116

Cctm Commands For The Control-Head118

Cctm Commands Of The Remote Control-Head Kit119

Cctm Error Codes120

Visual And Audible Indications121

Disassembly And Reassembly123

Removing And Mounting The Control Head124

Disassembling The Radio Body125

Removing The Cover125

Opening The Radio Body126

Removing The Main-Board Assembly126

Disassembling The Main-Board Assembly128

Removing An Options Board130

Reassembling The Radio Body131

Reassembling The Main-Board Assembly131

Contact Surfaces On The Bottom Side Of The Main Board131

Fitting The Main-Board Assembly To The Chassis133

Closing The Radio Body134

Pad Top Can On The Top Side Of The Main Board134

Disassembling And Reassembling The Control Head135

Speaker Orientation And Connectors Of The Control-Head Board135

Components Of The Control Head View137

Servicing Procedures139

Initial Tasks139

Initial Administration139

Visual Inspection139

Replace Damaged Or Missing Knob140

Check For Additional Damage140

Replace Damaged Cover Assembly140

Repair Damaged Control Head140

Power Up The Radio141

Read The Programming File142

Obtain The Details Of The Software Feature Enabler143

Read The Calibration File143

Check The User Interface143

Error Messages144

Check The Transmit And Transmit-Audio Functions145

Check The Receive And Receive-Audio Functions146

Enable Software Features (Sfe)148

Final Inspection149

Final Administration149

Final Tests Of Transmitter Function150

Final Tests Of General Radio Functions151

Power Supply Fault Finding153

Three Types Of Fault153

Check Inputs To Smps154

Important Components Of The Power-Supply Circuitry155

Check 3.3 V Supply156

Power-Supply Circuitry Under The Cdc Bot Can158

Check Linear Regulators158

Check Power-Up Configuration159

Implementation Of The Power-Up Options159

Check Power-Up Options160

Check Provision Of External Power162

Interface Fault Finding163

Internal And Connector Signals163

Types Of Signals163

Components Of The Interface Circuitry164

Check Output Lines165

Components Of The Interface Circuitry (Bottom Side)166

Check Input Lines167

Frequency Synthesizer Fault Finding169

Cctm Commands For Diagnosis Of Faults In Frequency Synthesizer169

Initial Checks170

Symptoms Of Fault170

Transmit And Receive Faults170

System Error171

Power Supplies Description173

Measurement Points For Frequency Synthesizer Power Supply Circuitry173

14V Power Supply174

Synthesizer Circuitry Under Syn Top Can And 6 V Regulator Ic606175

Synthesizer Circuitry Under The Fcl Top Can176

6V Power Supply177

Synthesizer Circuitry Under The Syn Bot And Vco Bot Cans178

5V Power Supply179

3V Power Supply180

Phase-Locked Loop Description181

Supply For Charge Pump181

Test And Measurement Points For The Synthesizer Pll And Loop Filter182

Components Between The Digital Board And The Frequency Synthesizer183

Dig Syn En Line184

Syn Lock Line185

Synthesizer Circuitry Under The Syn Top Can186

Check Loop Voltage187

Check Reference Voltage188

Check Feedback Voltage189

Check Dig Syn Fast Line190

Check Tp503 Test Point191

Receive Vco And Related Circuitry (Uhf Radios)192

Measurement Points For The Vco And Related Circuitry In Uhf Radios193

Check Receive Vco194

Synthesizer Circuitry Under The Syn Top And Vco Top Cans195

Repair Pll Feedback196

Synthesizer Circuitry Under The Vco Bot Can196

Repair Receive Vco197

Check Switching To Receive Mode198

Repair Switching Network199

Check Receive Buffer Amplifier200

Transmit Vco And Related Circuitry (Uhf Radios)201

Check Transmit Vco202

Repair Transmit Vco203

Check Switching To Transmit Mode204

Check Transmit Buffer Amplifier205

Vco And Related Circuitry (Vhf Radios)206

Minimum And Maximum Frequencies For The Different Vhf Frequency Bands206

Measurement Points For The Vco And Related Circuitry In Vhf Radios207

Check Transmit-Receive Switch212

Check Buffer Amplifier214

Power Supply For Fcl215

Fault-Diagnosis Stages215

Test And Measurement Points The Fcl Circuitry216

Power Supply217

Tcxo Circuitry Under The Cdc Top Can217

Vcxo And Tcxo Outputs218

Fcl Circuitry Under And Adjacent The Fcl Top Can219

Fcl Circuitry Under The Vcxo Bot Can220

Signals At Tp501 And Tp502221

Tp502 Test Point221

Tp501 Test Point222

Tp502 Test Point (Tp501 Grounded)223

Vcxo And Codec Circuitry224

Vcxo Tank Circuit225

Codec 2 Circuitry226

Receiver Fault Finding227

Fault Conditions227

Cctm Commands Required For The Diagnosis Of Faults In The Receiver227

Faulty Receiver Sensitivity228

Determine Extent Of Sensitivity Loss228

Receiver Circuitry Under The If Top Can229

Excessive Loss Of Sensitivity230

Check Power Supplies230

Receiver Circuitry Under The Lo2 Bot Can231

Receiver Circuitry Under The Fe Top Can231

Check Logic Signal232

Check Lock Status232

Check Biasing Of If Amplifier233

Check Matching Circuitry233

Moderate Or Slight Loss Of Sensitivity234

Front-End Calibration And Tuning Voltages234

Moderately Low Sensitivity235

Front-End Tuning Voltages And Corresponding Dac Values235

Slightly Low Sensitivity236

Incorrect Rssi Readings237

Agc Voltage Calibration237

Nominal Agc Data237

Fe Tune Bpf Settings238

Rssi Delta Gain238

Agc Delta Gain238

Faulty Radio Mute239

Determine Type Of Muting Selected239

Noise Muting Selected240

Rssi Muting Selected241

High Receiver Distortion242

Tcxo Calibration And Repair Of Tcxo242

Second If And Repair Of Matching Circuitry243

Transmitter Fault Finding (50W/40W Radios)245

Fault-Diagnosis Tasks245

Cctm Commands Required For The Diagnosis Of Faults In The Transmitter245

Can Replacement246

Lowest, Center And Highest Frequencies In Mhz246

Transmit Tests247

Secure Main-Board Asssembly247

Ensure Proper Antenna Load247

Limit Duration Of Transmit Tests247

Power Supplies - First Check248

13.8V Power Supply249

Point For Measuring The Power Supply To The Pas (B1 Band)250

Point For Measuring The Power Supply To The Pas (H5 And H7 Bands)251

Point For Measuring The Power Supply To The Pa Driver (B1 Band)252

Point For Measuring The Power Supply To Pa Driver (H5 And H7 Bands)253

Check Switch Circuit254

9V Power Supply255

Test Points For Checking The 9V Supply, Forward And Reverse Rf Power256

Transmitter Rf Power257

Check Forward And Reverse Powers259

Check Rf Output Power260

Power Unchanged Regardless Of Setting261

Check For Inhibiting Of Transmitter262

Check Temperature Sensor263

Power And Current Are Skewed266

Repair Output Matching Circuitry267

Power And Current Are Low268

Biasing Of Pa Driver And Pas269

Prepare To Check Biasing269

Check The Biasing Of The First Pa271

Gate Biases For The Pas And Pa Driver At High Power271

Test Points And Components Of The Shaping Filter (B1 Band)272

Test Points And Components Of The Shaping Filter (H5 And H7 Bands)273

Shaper And Level Shifter274

Pa Circuitry Under The Paf Top Can (B1 Band)275

Pa Circuitry Under The Paf Top Can (H5 And H7 Bands)276

Shaping Filter For Power Control277

Check Biasing Of Second Pa278

Biasing Of Pa Driver281

Pa Driver Circuitry Under The Pad Top Can (B1 Band)283

Pa Driver Circuitry Under The Pad Top Can (H5 And H7 Bands)284

Check Power Control285

Circuitry Under The Dirc Top Can286

Directional Coupler And Buffer Amplifier287

Voltages At Ic303 At Maximum Power287

Power Control For Pa Driver288

Components Of Concern On The Bottom-Side Of The Main Board (B1 Band)288

Shaping Filter291

Rf Signal Path292

Measurement Points For Diagnosing Faults In The Rf Signal Path292

Output Of Frequency Synthesizer293

Rf Voltages Along Initial Rf Signal Path Of Vhf Radio (B1 Band)296

Rf Voltages Along Initial Rf Signal Path Of Uhf Radio (H5 Band)296

Rf Voltages Along Initial Rf Signal Path Of Uhf Radio (H7 Band)297

Output Of First Stage Of Exciter298

Output Of Second Stage Of Exciter299

Output Of Third Stage Of Exciter300

Output Of Pa Driver301

Check Power At Directional Coupler304

Repair Circuitry307

Check Pin Switch308

Repair Pin Switch310

Circuitry Under The Lpf Top Can313

Check Components Of Lpf314

Transmitter Fault Finding (25W Radios)315

Secure Main-Board Assembly317

Protect Against Accidental Transmissions317

Avoid Thermal And Rf Burns317

Power Supplies - Introduction318

Point For Measuring The Power Supply To The Pas320

Point For Measuring The Power Supply To The Pa Driver321

Power And Current Skewed332

Test Points And Components Of The Shaping Filter338

Pa Circuitry Under The Paf Top Can340

Biasing Of Pa Driver - Drv Test Point345

Biasing Of Pa Driver - Set Pwr Test Point346

Pa Driver Circuitry Under The Pad Top Can347

Voltages At Ic303 At Maximum Power (40 W)350

Components Of Concern On The Bottom-Side Of The Main Board352

Power Control And Shaping Filter353

Output Of Buffer In Exciter Circuit358

Output Of Exciter358

Circuitry Under The Lpf Top Can (Top Side)368

Check Lpf Components369

Codec And Audio Fault Finding371

Cctm Commands371

2.5V Power Supply374

Faulty Speaker Audio375

Circuitry In The Vicinity Of Ic202375

Check Audio Power Amplifier376

Check Speaker Outputs377

Circuitry Under The Cdc Top Can, And Adjacent Interface Circuitry378

Check Itf Vol Wip Dc Input Signal379

Circuitry Under The Cdc Bot Can380

Check Itf Rx Beep In Input Signal381

No Speaker Audio At Auxiliary Connector382

Circuitry In The Vicinity Of The Internal-Options Connector Sk102382

Check Signal From Codec383

Circuitry In The Vicinity Of The Auxiliary Connector384

Check Lpf And Buffer Amplifier385

Faulty Receiver387

Check Level Shifter387

Circuitry In The Vicinity Of The Cdc Top Can388

Check Qn Test Point389

Faulty Modulation390

Circuitry In Under The Cdc Bot Can391

Check 2.3V Supply392

Check Bias Network392

Circuitry Under The Cdc Top Can393

Faulty Modulation Using Auxiliary Connector394

Apply Aud Tap In Signal394

Check Codec 2 Device395

Fault Finding Of Control Head397

Cctm Commands For Fault Finding Of The Control Head398

Cctm Commands For Fault Finding Of The Remote Control-Head Kit399

Power Supply Faulty400

Circuit Diagram Of The Power Supply Circuitry400

Pcb Layout Of The Power Supply Circuitry401

Lcd Display Faulty402

Circuit Diagram Of The Lcd Circuitry402

Pcb Layout Of The Lcd Circuitry403

Lcd Backlighting Faulty404

Lcd Heating Faulty405

Function Key Leds Or Status Leds Faulty406

Circuit Diagram Of The Function Key Leds And Status Leds406

Pcb Layout Of The Function Key Led And Status Led Circuitry407

Keypad Backlighting Faulty408

Circuit Diagram Of The Keypad Backlighting Circuitry408

One Led Or One Group Of Leds Faulty408

All Leds Faulty Or Intensity Faulty408

Pcb Layout Of The Keypad Backlighting Circuitry409

On/Off Key Faulty410

Circuit Diagram Of The On/Off Key410

Pcb Layout Of The Power On/Off Key Circuitry411

Function, Scroll, Or Selection Keys Faulty412

Circuit Diagram Of The Function, Scroll, And Selection Keys412

One Key Faulty412

Several Keys Faulty413

Pcb Layout Of The Function, Scroll, And Selection Key Circuitry413

Circuit Diagram Of The Speaker Circuitry414

14.10 Speaker Faulty414

Pcb Layout Of The Speaker Circuitry415

Circuit Diagram Of The Volume Control Circuitry416

14.11 Volume Control Faulty416

Pcb Layout Of The Volume Control Circuitry417

14.12 Ptt Faulty418

Pcb Layout Of Ptt Circuitry419

Spare Parts Of The Radio Body View421

Radio Body Parts List423

Spare Parts Of The Control Head View424

Spare Parts Of The Control Head List425

Chapter 3 Accessories427

Tmaa02-08 Keypad Microphone431

Using The Keypad431

Using The Ptt Key431

Using The Keypad Microphone To Make A Local Or Address-Book Call432

Installation433

Installing The Microphone433

Installing The Microphone Clip433

Radio Programming434

Interface Specification434

Circuit Description434

Pcb Information435

Tmaa02-08 Grid Reference List (Pcb Ipn 226-00145-04)436

Keypad Microphone Board Layout437

Keypad Microphone Board Circuit Diagram438

Tmaa03-02 Security Bracket439

Installing The Security Bracket And Radio440

Installation Planning440

Installation Procedure440

Removing A Radio From The Security Bracket441

Replacing The Radio In The Security Bracket441

Disassembling The Security Bracket442

Ordering Extra Parts442

Tmaa04-05 Ignition Sense Kit443

Tmaa10-01 Desktop Microphone445

Desktop Microphone Adjustment446

Desktop Microphone Interface Specification446

Correct Desktop Microphone Grommet Seating446

Desktop Microphone Circuit Description447

Desktop Microphone To Radio Interface447

Tmaa10-02 Handset449

Handset Wiring449

Handset Installation450

Connecting The Handset To The Radio450

Correct Handset Microphone Grommet Seating451

Dynamic Microphone Support451

Private Handset Mode451

Handset Settings In The Programmable I/O Form451

Handset To Radio Interface452

Remote Speaker Mounting453

Tmaa10-03 And Tmaa10-06 High-Power Remote Speakers453

Power Connector Wiring454

Installing The Remote Microphone455

Tmaa10-04 Remote Ptt Kit455

Installing The Remote Ptt456

Remote Ptt Settings In The Ptt Form456

Remote Ptt Settings In The Programmable I/O Form456

22.2 Radio Programming456

Tmaa10-04/Tmaa10-05 To Radio Interface457

Tmaa10-04 Parts List (Pcb Ipn 220-01711-01)458

Pre-Amplifier Board Layout459

Pre-Amplifier Board Circuit Diagram460

Installing An Enhanced Remote Kit461

Parts For Remote Control-Head Installation462

Removing The Control Head From The Radio Body463

Installing The Torso Interface463

Mounting The Remote U-Bracket464

Installing The Control-Head Interface464

Mounting The U-Bracket And Installing The Radio Body465

Connecting The Remote Cable466

Correct Remote Cable Grommet Seating466

Block Diagram Of Remote Control-Head Installation467

Servicing The Remote Control-Head Installation Parts468

Disassembling The Torso Interface468

Parts Of The Torso Interface View468

Disassembling The Control-Head Interface469

Tmaa03-03 Control-Head Interface Pcb470

Board Layout472

Circuit Diagram473

Tmac34-0T Torso Interface (Pcb Ipn 220-01720-01)474

Grid Reference List474

Topa-Sv-024 Test Unit477

Portable / Mobile Switch479

Mod Audio/Audio Tap In / Off / Mic Audio Switch479

On Hook / Off Hook Switch479

Rx / Tx/Ptt Switch480

Speaker / Radio / Load Switch480

Pcb Information (Pcb Ipn 220-01418-02A)481

Limited Warranty484

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