Maxon Telecom SM-2000 service manual Page-46 December

Page 50

MAXON SM-2000 MOBILE

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

REF #

DESCRIPTION

PART #

 

REF #

DESCRIPTION

PART #

L101

COIL CHIP 0.68UH

310-711-5

 

Q132

TRANSISTOR

202-113-1

L102

COIL CHIP 0.68UH

310-711-5

 

Q133

TRANSISTOR

202-113-1

L103

COIL CHIP 47NH

310-861-7

 

Q134

TRANSISTOR

202-095-8Z

L104

COIL CHIP 27NH

310-860-6

 

Q135

TRANSISTOR

202-095-8Z

L106

COIL CHIP 27NH

310-860-6

 

Q137

TRANSISTOR

202-095-8Z

L107

COIL SPRING

310-304-1

 

Q140

TRANSISTOR

202-095-8Z

L108

COIL CHIP 18NH

310-859-6

 

Q219

TRANSISTOR

202-095-8Z

L110

COIL CHIP 18NH

310-859-6

 

R100

CHIP RESISTOR 2.2K

060-222-2Z

L111

COIL CHIP 0.15UH

310-706-1

 

R101

CHIP RESISTOR 1.8K

060-182-9Z

L113

COIL SPRING

311-158-1

 

R102

CHIP RESISTOR 0

060-000-8Z

L114

COIL CHIP 0.15UH

310-706-1

 

R103

CHIP RESISTOR 0

060-000-8Z

L115

COIL SPRING

311-158-1

 

R104

CHIP RESISTOR 910

060-911-1Z

L116

COIL SPRING

311-178-9

 

R105

CHIP RESISTOR 100

060-101-6Z

L118

COIL SPRING

311-180-1

 

R106

CHIP RESISTOR 910

060-911-1Z

L119

COIL CHIP 0.15UH

310-706-1

 

R107

CHIP RESISTOR 100

060-101-6Z

L120

COIL SPRING

311-180-1

 

R108

CHIP RESISTOR 0

060-000-8Z

L121

COIL SPRING

311-180-1

 

R109

CHIP RESISTOR 10K

060-103-8Z

L122

COIL SPRING

311-179-0

 

R110

CHIP RESISTOR 3K

060-302-1Z

L123

COIL CHIP 18NH

310-859-6

 

R111

CHIP RESISTOR 2.7K

060-272-7Z

L124

COIL CHIP 18NH

310-859-6

 

R112

CHIP RESISTOR 2.7K

060-272-7Z

L125

COIL SPRING

311-180-1

 

R113

CHIP RESISTOR 100K

060-104-9Z

L225

COIL AXIAL 2.2UH

310-378-7

 

R114

CHIP RESISTOR 10K

060-103-8Z

L226

COIL CHIP 1UH

310-657-0

 

R115

CHIP RESISTOR 100

060-101-6Z

L227

COIL CHIP 220UH

310-862-8Y

 

R116

CHIP RESISTOR 22

060-220-0Z

L228

COIL AXIAL 1MH

310-381-0

 

R117

CHIP RESISTOR 5.6K

060-562-9Z

L229

COIL AXIAL 1MH

310-381-0

 

R118

CHIP RESISTOR 3.3K

060-332-8Z

Q101

TRANSISTOR

202-113-1

 

R119

CHIP RESISTOR 100

060-101-6Z

Q102

TRANSISTOR

202-106-5

 

R120

CHIP RESISTOR 47

060-470-9Z

Q103

TRANSISTOR

202-106-5

 

R121

CHIP RESISTOR 10

060-100-5Z

Q104

TRANSISTOR

202-113-1

 

R122

CHIP RESISTOR 150

060-151-1Z

Q105

TRANSISTOR

218-057-7Z

 

R123

CHIP RESISTOR 6.8K

060-682-4Z

Q106

TRANSISTOR

203-096-4

 

R124

CHIP RESISTOR 10

060-100-5Z

Q107

TRANSISTOR

202-113-1

 

R125

CHIP RESISTOR 220

060-221-1Z

Q108

TRANSISTOR

203-104-8

 

R126

CHIP RESISTOR 12K

060-123-6Z

Q110

TRANSISTOR

200-003-5

 

R127

CHIP RESISTOR 3.9K

060-392-2Z

Q111

TRANSISTOR

200-003-5

 

R128

CHIP RESISTOR 1.2K

060-122-5Z

Q113

TRANSISTOR

200-003-5

 

R130

CHIP RESISTOR 270K

060-274-9Z

Q114

TRANSISTOR

200-003-5

 

R131

CHIP RESISTOR 1.2K

060-122-5Z

Q116

TRANSISTOR

200-003-5

 

R132

CHIP RESISTOR 7.5K

060-752-4Z

Q117

TRANSISTOR

200-045-3

 

R133

CHIP RESISTOR 12K

060-123-6Z

Q119

BRT

202-092-5

 

R134

CHIP RESISTOR 3.9K

060-392-2Z

Q121

TRANSISTOR

202-095-8Z

 

R135

CHIP RESISTOR 1.2K

060-122-5Z

Q122

TRANSISTOR

203-111-4

 

R136

CHIP RESISTOR 2.7K

060-272-7Z

Q123

TRANSISTOR

202-095-8Z

 

R137

CHIP RESISTOR 2.7K

060-272-7Z

Q124

TRANSISTOR

202-113-1

 

R138

CHIP RESISTOR 470

060-471-0Z

Q125

TRANSISTOR

202-066-2

 

R139

CHIP RESISTOR 22K

060-223-3Z

Q127

TRANSISTOR

202-095-8Z

 

R140

CHIP RESISTOR 10

060-100-5Z

Q128

BRT

202-092-5

 

R141

CHIP RESISTOR 470

060-471-0Z

Q130

TRANSISTOR

200-003-5

 

R142

CHIP RESISTOR 10K

060-103-8Z

Page-46-

December 98

Image 50
Contents SM-2000 Page Table of Contents Maxon SM-2000 MobileSM-2000 Exploded View Schematics and Block DiagramsPCB Layouts General SpecificationsTransceiver Nominal Performance Transmitter Operational BandwidthBand Specfications Receiver TX Tone Modulation CharacteristicsSUB Audible Tones DCS 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 BoardFrequency Synthesizer Circuit RF Section SM-2450/UHFUHF Transmitter Second Oscillator- Mixer- Limiter and FM Detector Voltage Controlled Oscillator CircuitFirst Mixer 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 Surface Mount Removal Component ReplacementSurface Mount Components 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