Maxon Telecom SM-2000 service manual Page-41 December

Page 45

MAXON SM-2000 MOBILE

650-000-0001 SM-2150/VHF MAIN BOARD

REF #

DESCRIPTION

PART #

 

REF #

DESCRIPTION

PART #

R146

CHIP RESISTOR

15K

060-153-3Z

 

R206

CHIP RESISTOR

2.7K

060-272-7Z

R147

CHIP RESISTOR

560K

060-564-1Z

 

R207

CHIP RESISTOR

100

060-101-6Z

R148

CHIP RESISTOR

15K

060-153-3Z

 

R210

CHIP RESISTOR

100

060-101-6Z

R149

CHIP RESISTOR

10

060-100-5Z

 

R211

CHIP RESISTOR

68K

060-683-5Z

R150

CHIP RESISTOR

560K

060-564-1Z

 

R213

CHIP RESISTOR

22K

060-223-3Z

R151

CHIP RESISTOR

22K

060-223-3Z

 

R214

CHIP RESISTOR

22K

060-223-3Z

R152

CHIP RESISTOR

47

060-470-9Z

 

R215

CHIP RESISTOR

10K

060-103-8Z

R153

CHIP RESISTOR

3.9K

060-392-2Z

 

R217

CHIP RESISTOR

10K

060-103-8Z

R154

CHIP RESISTOR

2.2

060-229-9Z

 

R218

CHIP RESISTOR

10K

060-103-8Z

R156

CHIP RESISTOR

6.8K

060-682-4Z

 

R219

CHIP RESISTOR

39K

060-393-3Z

R157

CHIP RESISTOR

300

060-301-8Z

 

R220

CHIP RESISTOR

56K

060-563-0Z

R158

CHIP RESISTOR

3.3K

060-332-8Z

 

R221

CHIP RESISTOR

22K

060-223-3Z

R159

CHIP RESISTOR

4.7

060-479-8Z

 

R222

CHIP RESISTOR

22K

060-223-3Z

R160

CHIP RESISTOR

22

060-220-0Z

 

R223

CHIP RESISTOR

2.2K

060-222-2Z

R161

CHIP RESISTOR

1.8K

060-182-9Z

 

R224

CHIP RESISTOR

0

060-000-8Z

R162

CHIP RESISTOR

6.8

060-689-5Z

 

R250

CHIP RESISTOR

12K

060-123-6Z

R163

CHIP RESISTOR

47

060-470-9Z

 

R251

CHIP RESISTOR

2K

060-202-4Z

R164

CHIP RESISTOR

150

060-151-1Z

 

R252

CHIP RESISTOR

1K

060-102-7Z

R168

CHIP RESISTOR

10K

060-103-8Z

 

R253

CHIP RESISTOR

1.8K

060-182-9Z

R170

CHIP RESISTOR

470

060-471-0Z

 

R351

CHIP RESISTOR

10K

060-103-8Z

R172

CHIP RESISTOR

3.3K

060-332-8Z

 

R352

CHIP RESISTOR

330

060-331-7Z

R173

CHIP RESISTOR

3.3K

060-332-8Z

 

R353

CHIP RESISTOR

47

060-470-9Z

R174

CHIP RESISTOR

10

060-100-5Z

 

R354

CHIP RESISTOR

10K

060-103-8Z

R175

FILM RESISTOR

330

030-331-8Z

 

R355

CHIP RESISTOR

330

060-331-7Z

R176

FILM RESISTOR

120

030-121-5Z

 

R356

CHIP RESISTOR

47

060-470-9Z

R177

CHIP RESISTOR

1.2K

060-122-5Z

 

R357

CHIP RESISTOR

1.2K

060-122-5Z

R178

CHIP RESISTOR

1.2K

060-122-5Z

 

R358

CHIP RESISTOR

10K

060-103-8Z

R180

CHIP RESISTOR

10K

060-103-8Z

 

RV101

RESISTOR SEMIFIXED 22KB

071-223-1

R181

FILM RESISTOR

120

030-121-5Z

 

RV102

RESISTOR SEMIFIXED 1KB

071-102-5

R182

CHIP RESISTOR

120

060-121-4Z

 

RV103

RESISTOR SEMIFIXED 10KB

071-103-6

R182

CHIP RESISTOR

150

060-151-1Z

 

RV104

RESISTOR SEMIFIXED 10KB

071-103-6

R183

CHIP RESISTOR

470K

060-474-3Z

 

RV105

RESISTOR SEMIFIXED 4.7KB

071-472-9

R184

CHIP RESISTOR

10

060-100-5Z

 

T101

COIL IFT

600NH 45MHZ

321-014-7

R185

CHIP RESISTOR

47K

060-473-2Z

 

T102

COIL IFT

600NH 45MHZ

321-014-7

R187

CHIP RESISTOR

10K

060-103-8Z

 

T103

COIL

455KHZ DETECTOR

320-232-2

R190

CHIP RESISTOR

22K

060-223-3Z

 

T104

TRANSFORMER

CHOKE

300-008-1

R191

CHIP RESISTOR

2.7K

060-272-7Z

 

TH101

THERMISTOR CHIP

33K

098-333-8

R192

CHIP RESISTOR

22K

060-223-3Z

 

X101

CRYSTAL NR2B

44.545M

261-932-7Z

R193

CHIP RESISTOR

2.7K

060-272-7Z

 

 

 

 

 

 

R194

CHIP RESISTOR

10K

060-103-8Z

 

 

 

 

 

 

R195

CHIP RESISTOR

18K

060-183-0Z

 

 

 

 

 

 

R196

CHIP RESISTOR

82K

060-823-5Z

 

 

 

 

 

 

R197

CHIP RESISTOR

100K

060-104-9Z

 

 

 

 

 

 

R198

CHIP RESISTOR

1K

060-102-7Z

 

 

 

 

 

 

R200

CHIP RESISTOR

47K

060-473-2Z

 

 

 

 

 

 

R201

CHIP RESISTOR

330K

060-334-0Z

 

 

 

 

 

 

R202

CHIP RESISTOR

2.7K

060-272-7Z

 

 

 

 

 

 

R203

CHIP RESISTOR

150K

060-154-4Z

 

 

 

 

 

 

R204

CHIP RESISTOR

1K

060-102-7Z

 

 

 

 

 

 

R205

CHIP RESISTOR

100

060-101-6Z

 

 

 

 

 

 

Page-41-

December 98

Image 45
Contents SM-2000 Page Maxon SM-2000 Mobile Table of ContentsSchematics and Block Diagrams PCB LayoutsSM-2000 Exploded View Specifications Transceiver Nominal PerformanceGeneral Operational Bandwidth BandTransmitter Specfications TX Tone Modulation Characteristics SUB Audible Tones DCSReceiver Accessories RX Tone Demodulation CharacteristicsSubaudible tones CTCSS/DCS Reliability AnalysisIntroduction Check the carton carefully for the following items Unpacking InformationGeneral Description Description of Controls Description of ControlsSM-2000 Rear Panel Digital Circuitry Theory of OperationCTCSS/DCS Decode Circuits CTCSS/DCS Encoder CircuitEeprom PLL RF Section SM-2150/VHF TX VCO RX VCOPrescaler Out of Lock DetectorReceiver RF AmplifierLow Pass Filter Receiver Audio CircuitAudio Amplifier Noise Detect Circuit SQ BoardRF Section SM-2450/UHF UHF TransmitterFrequency Synthesizer Circuit Voltage Controlled Oscillator Circuit First MixerSecond Oscillator- Mixer- Limiter and FM Detector Squelch Noise Band Pass Filter Squelch Mute CircuitNoise Detector Speaker Audio AmplifierTransmit Tests Test SetupPLL Alignment SM-2150/VHF Alignment ProcedureReceiver Alignment RF Discriminator TuningAutomatic Power Adjustment Squelch AdjustmentModulation Deviation Adjustment CTCSS/DCS Deviation AdjustmentAlignment Points Diagram SM-2150/VHF SM-2450/UHF Alignment Procedure Page-28 December ∙ Note Release the PTT button when changing channels Page-30 December Alignment Points Diagram SM-2450/UHF Component Replacement Surface Mount ComponentsSurface Mount Removal Surface Mounted Integrated Circuit Replacement Surface Mount Component ReplacementREF # Description Parts List Common to SM-2000Digital Parts Common on Both VHF & UHF Digital Section REF # Description FRONT-END PCB Assembly Main Board Parts Band ChartPage-38 December Page-39 December Page-40 December Page-41 December SM-2450A UHF Band SM-2450C UHF Band SM-2450D UHF Band SM-2450E UHF Band Band ChartPage-44 December Page-45 December Page-46 December Page-47 December Component Pinout Page-49 December Page-50 December IC409 Voltage Charts SM-2150/VHFPage-52 December Transistor Voltage Chart Voltage Charts SM-2450/UHF IC404 Page-56 December Status Indications & Audible Tones Trouble Shooting Chart SM-2000Page-58 December MMBV109 Replacement Module SchematicsMA-4472 Microphone Schematic Page-61- December Page-62- December Page-63- December Page-64- December SM-2000 Control Head SW5Page-66 December SM-2150/VHF Main Board AssyFront SM-2450/UHF Main Board AssySM-2000 SM-2150/VHF Exploded View Parts List Intentionally Left Blank