Maxon Telecom SM-2000 service manual Page-38 December

Page 42

MAXON SM-2000 MOBILE

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

REF #

DESCRIPTION

PART #

 

REF #

DESCRIPTION

PART #

FRONT-END PCB ASSEMBLY (REFER TO BAND CHART)

 

C183

CHIP CERAMIC

47PF

134-722-1Y

C1

CHIP CERAMIC

470PF

134-761-4Y

 

C184

CHIP CERAMIC

33PF

133-306-2Y

C101

CHIP CERAMIC

220PF

132-220-2Y

 

C185

CHIP CERAMIC

20PF

132-012-1Y

C102

CHIP CERAMIC

220PF

132-220-2Y

 

C186

CHIP CERAMIC

0.1UF

130-A60-4Y

C103

CHIP CERAMIC

220PF

132-220-2Y

 

C187

CHIP CERAMIC

0.1UF

130-A60-4Y

C104

CHIP CERAMIC

220PF

132-220-2Y

 

C188

CHIP CERAMIC

220PF

132-220-2Y

C105

CHIP CERAMIC

5PF

135-010-4Y

 

C189

CHIP CERAMIC

0.68UF

130-624-4

C106

CHIP CERAMIC

470PF

134-761-4Y

 

C190

CHIP CERAMIC

0.033UF

130-314-5Y

C107

CHIP CERAMIC

0.1UF

130-170-0Y

 

C191

CHIP CERAMIC

0.1UF

130-A60-4Y

C108

CHIP CERAMIC

1UF

131-089-7Y

 

C192

CHIP CERAMIC

0.033UF

130-314-5Y

C109

CHIP CERAMIC

220PF

132-220-2Y

 

C193

CHIP CERAMIC

0.1UF

130-A60-4Y

C110

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C194

CHIP CERAMIC

0.0033UF

130-315-6Y

C113

CHIP TANTALUM

1UF

141-036-1Z

 

C195

CHIP CERAMIC

10PF

131-039-1Y

C114

MYLAR CAPACITOR

0.1UF

111-022-9

 

C196

CHIP CERAMIC

0.01UF

130-172-2Y

C115

CHIP CERAMIC

0.1UF

130-170-0Y

 

C197

CHIP CERAMIC

47PF

134-722-1Y

C119

CHIP CERAMIC

10PF

131-039-1Y

 

C198

CHIP CERAMIC

0.001UF

130-A17-6Y

C120

MYLAR CAPACITOR

0.01UF

111-008-7Z

 

C200

CHIP CERAMIC

0.1UF

130-A60-4Y

C121

CHIP CERAMIC

470PF

134-761-4Y

 

C201

CHIP CERAMIC

0.01UF

130-172-2Y

C122

CHIP CERAMIC

0.1UF

130-A60-4Y

 

C202

CHIP CERAMIC

0.01UF

130-172-2Y

C129

CHIP CERAMIC

0.001UF

131-025-8Y

 

C203

CHIP CERAMIC

0.001UF

130-A17-6Y

C139

CHIP CERAMIC

220PF

132-220-2Y

 

C207

CHIP CERAMIC

0.001UF

130-A17-6Y

C144

CHIP CERAMIC

1.5PF

131-559-4Y

 

C209

CHIP CERAMIC

0.1UF

130-A60-4Y

C145

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C211

CHIP CERAMIC

0.01UF

130-172-2Y

C147

ELECT CAPACITOR

47UF

104-713-2

 

C212

CHIP CERAMIC

0.01UF

130-172-2Y

C148

CHIP CERAMIC

220PF

132-220-2Y

 

C214

CHIP CERAMIC

220PF

132-220-2Y

C149

CHIP CERAMIC

220PF

132-220-2Y

 

C216

CHIP CERAMIC

220PF

132-220-2Y

C150

CHIP CERAMIC

220PF

132-220-2Y

 

C217

CHIP CERAMIC

220PF

132-220-2Y

C151

CHIP CERAMIC

470PF

134-761-4Y

 

C219

CHIP CERAMIC

220PF

132-220-2Y

C152

ELECT CAPACITOR

2200UF

102-278-6

 

C220

CHIP CERAMIC

220PF

132-220-2Y

C156

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C221

DIP TANTALUM

1UF

141-008-6Z

C157

CHIP CERAMIC

15PF

131-511-0Y

 

C222

DIP TANTALUM

10UF

141-012-9Z

C158

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C223

CHIP CERAMIC

220PF

132-220-2Y

C159

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C224

ELECT CAPACITOR

1000UF

101-A02-8

C161

CHIP CERAMIC

0.1UF

130-170-0Y

 

C225

CHIP CERAMIC

0.1UF

130-A60-4Y

C162

CHIP CERAMIC

220PF

132-220-2Y

 

C226

ELECT CAPACITOR

1000UF

101-048-0R

C167

CHIP CERAMIC

82PF

138-210-3Y

 

C227

CHIP CERAMIC

0.001UF

130-A17-6Y

C168

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C228

CHIP CERAMIC

0.001UF

130-A17-6Y

C169

CHIP CERAMIC

0.01UF

130-172-2Y

 

C230

CHIP CERAMIC

0.001UF

130-A17-6Y

C170

CHIP CERAMIC

220PF

132-220-2Y

 

C232

ELECT CAPACITOR

100UF

101-023-7

C172

CHIP CERAMIC

15PF

131-511-0Y

 

C233

ELECT CAPACITOR

220UF

102-224-7

C173

CHIP CERAMIC

56PF

135-613-9Y

 

C234

CHIP CERAMIC

220PF

132-220-2Y

C174

CHIP CERAMIC

3.3PF

133-321-5Y

 

C235

CHIP CERAMIC

0.001UF

130-A17-6Y

C175

CHIP CERAMIC

20PF

132-012-1Y

 

C236

CHIP CERAMIC

220PF

132-220-2Y

C176

CHIP CERAMIC

39PF

133-932-7Y

 

C237

CHIP CERAMIC

0.001UF

130-A17-6Y

C177

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C238

ELECT CAPACITOR

2200UF

102-278-6

C178

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C239

ELECT CAPACITOR

10UF

101-025-9

C179

CHIP CERAMIC

82PF

138-210-3Y

 

C240

CHIP CERAMIC

39PF

133-932-7Y

C180

CHIP CERAMIC

0.01UF

130-172-2Y

 

C241

CHIP CERAMIC

82PF

138-210-3Y

C181

DIP TANTALUM

10UF

141-012-9Z

 

C244

CHIP CERAMIC

0.001UF

130-A17-6Y

C182

CHIP CERAMIC

0.001UF

130-A17-6Y

 

C247

CHIP CERAMIC

220PF

132-220-2Y

Page-38-

December 98

Image 42
Contents SM-2000 Page Table of Contents Maxon SM-2000 MobileSchematics and Block Diagrams PCB LayoutsSM-2000 Exploded View Specifications Transceiver Nominal PerformanceGeneral Operational Bandwidth BandTransmitter Specfications TX Tone Modulation Characteristics SUB Audible Tones DCSReceiver Subaudible tones CTCSS/DCS RX Tone Demodulation CharacteristicsAccessories Reliability AnalysisIntroduction Unpacking Information Check the carton carefully for the following itemsGeneral Description Description of Controls Description of ControlsSM-2000 Rear Panel CTCSS/DCS Decode Circuits Theory of OperationDigital Circuitry CTCSS/DCS Encoder CircuitEeprom PLL RF Section SM-2150/VHF RX VCO TX VCOReceiver Out of Lock DetectorPrescaler RF AmplifierAudio Amplifier Receiver Audio CircuitLow Pass Filter 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 Noise Detector Squelch Mute CircuitSquelch Noise Band Pass Filter Speaker Audio AmplifierTest Setup Transmit TestsSM-2150/VHF Alignment Procedure PLL AlignmentDiscriminator Tuning Receiver Alignment RFSquelch Adjustment Automatic Power AdjustmentCTCSS/DCS Deviation Adjustment Modulation 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 Mount Component Replacement Surface Mounted Integrated Circuit ReplacementParts List Common to SM-2000 REF # DescriptionDigital Parts Common on Both VHF & UHF Digital Section Band Chart REF # Description FRONT-END PCB Assembly Main Board PartsPage-38 December Page-39 December Page-40 December Page-41 December SM-2450A UHF Band SM-2450C UHF Band SM-2450D UHF Band Band Chart SM-2450E UHF BandPage-44 December Page-45 December Page-46 December Page-47 December Component Pinout Page-49 December Page-50 December Voltage Charts SM-2150/VHF IC409Page-52 December Transistor Voltage Chart Voltage Charts SM-2450/UHF IC404 Page-56 December Trouble Shooting Chart SM-2000 Status Indications & Audible TonesPage-58 December Replacement Module Schematics MMBV109MA-4472 Microphone Schematic Page-61- December Page-62- December Page-63- December Page-64- December SW5 SM-2000 Control HeadSM-2150/VHF Main Board Assy Page-66 DecemberSM-2450/UHF Main Board Assy FrontSM-2000 SM-2150/VHF Exploded View Parts List Intentionally Left Blank