Maxon Telecom SM-2000 service manual Page-44 December

Page 48

MAXON SM-2000 MOBILE

650-000-0002 SM-2450/UHF MAIN BOARD

REF #

DESCRIPTION

PART #

 

REF #

DESCRIPTION

PART #

FRONT-END PCB ASSEMBLY (REFER TO BAND CHART)

 

C163

CHIP CERAMIC 6PF

136-005-5Y

ANT1

CONNECTOR ANT

422-907-0

 

C164

CHIP CERAMIC 12PF

131-208-7Y

ANT1

CONNECTOR SW-1456(BNC-R)

421-655-7

 

C165

CHIP CERAMIC 6PF

136-005-5Y

ANT1

PIN CU &1.1X13(101-01)

860-129

 

C167

CHIP CERAMIC 82PF

138-210-3Y

C101

CHIP CERAMIC 220PF

132-220-2Y

 

C168

CHIP CERAMIC 0.001UF

130-A17-6Y

C102

CHIP CERAMIC 220PF

132-220-2Y

 

C169

CHIP CERAMIC 47PF

134-722-1Y

C103

CHIP CERAMIC 220PF

132-220-2Y

 

C172

CHIP CERAMIC 15PF

131-511-0Y

C104

CHIP CERAMIC 220PF

132-220-2Y

 

C173

CHIP CERAMIC 56PF

135-613-9Y

C105

CHIP CERAMIC 5PF

135-010-4Y

 

C174

CHIP CERAMIC 3.3PF

133-321-5Y

C106

CHIP CERAMIC 470PF

134-761-4Y

 

C175

CHIP CERAMIC 20PF

132-012-1Y

C107

CHIP CERAMIC 0.1UF

130-170-0Y

 

C176

CHIP CERAMIC 39PF

133-932-7Y

C108

CHIP CERAMIC 220PF

132-220-2Y

 

C177

CHIP CERAMIC 0.001UF

130-A17-6Y

C109

CHIP CERAMIC 220PF

132-220-2Y

 

C178

CHIP CERAMIC 0.001UF

130-A17-6Y

C110

CHIP CERAMIC 0.001UF

130-A17-6Y

 

C179

CHIP CERAMIC 82PF

138-210-3Y

C113A

POLY CAPACITOR 0.33UF

120-313-6

 

C180

CHIP CERAMIC 0.01UF

130-172-2Y

C114

MYLAR CAPACITOR 0.01UF

111-008-7Z

 

C181

DIP TANTALUM 10UF

141-012-9Z

C115

CHIP CERAMIC 220PF

132-220-2Y

 

C182

CHIP CERAMIC 0.001UF

130-A17-6Y

C118

CHIP CERAMIC 4.7PF

134-767-0Y

 

C183

CHIP CERAMIC 47PF

134-722-1Y

C119

CHIP CERAMIC 15PF

131-511-0Y

 

C184

CHIP CERAMIC 30PF

133-010-4Y

C120

MYLAR CAPACITOR 0.01UF

111-008-7Z

 

C185

CHIP CERAMIC 15PF

131-511-0Y

C121

CHIP CERAMIC 220PF

132-220-2Y

 

C186

CHIP CERAMIC 0.1UF

130-A60-4Y

C122

CHIP CERAMIC 0.1UF

130-170-0Y

 

C187

CHIP CERAMIC 0.1UF

130-A60-4Y

C125

CHIP TANTALUM 1UF

141-036-1Z

 

C188

CHIP CERAMIC 220PF

132-220-2Y

C126

CHIP CERAMIC 220PF

132-220-2Y

 

C189

CHIP CERAMIC 0.1UF

130-170-0Y

C127

CHIP CERAMIC 470PF

134-761-4Y

 

C190

CHIP CERAMIC 0.033UF

130-314-5Y

C128

CHIP CERAMIC 0.001UF

130-A17-6Y

 

C191

CHIP CERAMIC 0.1UF

130-A60-4Y

C129

CHIP CERAMIC 0.1UF

130-170-0Y

 

C192

CHIP CERAMIC 0.033UF

130-314-5Y

C131

CHIP CERAMIC 220PF

132-220-2Y

 

C193

CHIP CERAMIC 0.1UF

130-A60-4Y

C137

CHIP CERAMIC 68PF

136-816-5Y

 

C194

CHIP CERAMIC 0.0033UF

130-315-6Y

C138

CHIP CERAMIC 2.2PF

132-266-4Y

 

C195

CHIP CERAMIC 10PF

131-039-1Y

C139

CHIP CERAMIC 220PF

132-220-2Y

 

C196

CHIP CERAMIC 0.01UF

130-172-2Y

C140

CHIP CERAMIC 47PF

134-722-1Y

 

C197

CHIP CERAMIC 47PF

134-722-1Y

C141

CHIP CERAMIC 5PF

135-010-4Y

 

C198

CHIP CERAMIC 0.001UF

130-A17-6Y

C142

CHIP CERAMIC 12PF

131-208-7Y

 

C199

CHIP CERAMIC 12PF

131-208-7Y

C143

CHIP CERAMIC 220PF

132-220-2Y

 

C200

CHIP CERAMIC 0.1UF

130-A60-4Y

C144

CHIP CERAMIC 0.5PF

130-504-9Y

 

C201

CHIP CERAMIC 0.01UF

130-172-2Y

C145

CHIP CERAMIC 0.001UF

130-A17-6Y

 

C202

CHIP CERAMIC 0.01UF

130-172-2Y

C146

CHIP CERAMIC 12PF

131-208-7Y

 

C203

CHIP CERAMIC 0.001UF

130-A17-6Y

C147

ELECT CAPACITOR 47UF

104-713-2

 

C204

CHIP CERAMIC 6PF

136-005-5Y

C148

CHIP CERAMIC 220PF

132-220-2Y

 

C207

CHIP CERAMIC 0.001UF

130-A17-6Y

C149

CHIP CERAMIC 220PF

132-220-2Y

 

C209

CHIP CERAMIC 0.1UF

130-A60-4Y

C150

CHIP CERAMIC 220PF

132-220-2Y

 

C210

MYLAR CAPACITOR 0.022UF

112-211-8Z

C151

CHIP CERAMIC 470PF

134-761-4Y

 

C211

CHIP CERAMIC 0.01UF

130-172-2Y

C152

ELECT CAPACITOR 2200UF

102-278-6

 

C212

CHIP CERAMIC 0.01UF

130-172-2Y

C155

CHIP CERAMIC 2.2PF

132-266-4Y

 

C214

CHIP CERAMIC 220PF

132-220-2Y

C156

CHIP CERAMIC 47PF

134-722-1Y

 

C216

CHIP CERAMIC 220PF

132-220-2Y

C157

CHIP CERAMIC 5.6PF

135-627-2Y

 

C217

CHIP CERAMIC 220PF

132-220-2Y

C159

CHIP CERAMIC 6PF

136-005-5Y

 

C218

ELECT CAPACITOR 10UF

101-025-9

C160

CHIP CERAMIC 0.001UF

130-A17-6Y

 

C218

ELECT CAPACITOR 10UF

101-025-9

C162

CHIP CERAMIC 3.3PF

133-321-5Y

 

C219

CHIP CERAMIC 220PF

132-220-2Y

Page-44-

December 98

Image 48
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 RX Tone Demodulation Characteristics AccessoriesSubaudible tones CTCSS/DCS Reliability AnalysisIntroduction Unpacking Information Check the carton carefully for the following itemsGeneral Description Description of Controls Description of ControlsSM-2000 Rear Panel Theory of Operation Digital CircuitryCTCSS/DCS Decode Circuits CTCSS/DCS Encoder CircuitEeprom PLL RF Section SM-2150/VHF RX VCO TX VCOOut of Lock Detector PrescalerReceiver RF AmplifierReceiver Audio Circuit Low Pass FilterAudio 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 Mute Circuit Squelch Noise Band Pass FilterNoise Detector 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