Maxon Telecom SM-2000 service manual Component Pinout

Page 52

MAXON SM-2000 MOBILE

COMPONENT PINOUT

COMPONENT PINOUT

 

 

 

 

= SM-2150/VHF

Unless otherwise indicated all parts are common to the SM-2000 Series Radio.

= SM-2450/UHF

BASE DIAGRAM

MANUFACTURER'S

REFERENCE NO.

TYPE

PART NUMBER

 

 

 

 

41

40

 

 

 

60

21

 

 

 

61

20

HD4074818

IC409

CPU

 

80

1

 

 

 

5

 

LM358M

IC104, IC105

OP Amp

8

 

 

 

 

 

 

4

AT93C56-10S1

IC408

EEPROM

 

1

11

 

 

 

20

 

MC14519IF

IC101

PLL

 

10

 

 

 

 

 

1

 

 

 

9

 

MC14053

IC411,412

Analog SW IC

 

 

 

 

16

 

MC14066

IC401

Analog SW IC

 

8

 

 

 

 

1

 

MC3371D

IC109

IF IC

 

 

8

 

 

 

 

14

 

KIA324F

IC404,406,410

OP Amp

 

7

 

 

 

 

1

 

 

 

 

8

 

 

 

 

14

 

 

 

 

 

7

MF6CWM-100

IC407

Switched Cap Filter

 

 

 

 

 

1

 

 

 

1

 

TDA2003V

IC108

Audio AMP

3

 

 

 

 

 

5

 

 

 

 

 

1:IN

 

 

 

1

2:GND

KIA7808PI

IC107

Regulator

 

 

 

 

2

3:OUT

 

 

 

3

 

 

 

 

 

1:OUT

 

 

 

1 2 3

2:GND

KIA78L05F

IC105,402

Regulator

 

 

3:IN

 

 

 

 

 

Page-48-

 

 

 

 

December 98

 

Page 51 Page 53
Image 52
Page 51 Page 53
Contents SM-2000 Page Table of Contents Maxon SM-2000 MobilePCB Layouts Schematics and Block DiagramsSM-2000 Exploded View Transceiver Nominal Performance SpecificationsGeneral Band Operational BandwidthTransmitter Specfications SUB Audible Tones DCS TX Tone Modulation CharacteristicsReceiver 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 BoardUHF Transmitter RF Section SM-2450/UHFFrequency Synthesizer Circuit First Mixer Voltage Controlled Oscillator CircuitSecond 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 Surface Mount Components Component ReplacementSurface 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
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