Maxon Telecom
SM-2000
service manual
Troubleshooting
Specifications
Parts list
Schematics and Block Diagrams
Component Replacement
Accessories
Test Setup
Squelch Adjustment
Discriminator Tuning
Page 2
Page 1
Page 3
Image 2
Page 1
Page 3
Contents
SM-2000
Page
Table of Contents
Maxon SM-2000 Mobile
SM-2000 Exploded View
Schematics and Block Diagrams
PCB Layouts
General
Specifications
Transceiver Nominal Performance
Transmitter
Operational Bandwidth
Band
Specfications
Receiver
TX Tone Modulation Characteristics
SUB Audible Tones DCS
Subaudible tones CTCSS/DCS
RX Tone Demodulation Characteristics
Accessories
Reliability Analysis
Introduction
Unpacking Information
Check the carton carefully for the following items
General Description
Description of Controls
Description of Controls
SM-2000 Rear Panel
CTCSS/DCS Decode Circuits
Theory of Operation
Digital Circuitry
CTCSS/DCS Encoder Circuit
Eeprom
PLL
RF Section SM-2150/VHF
RX VCO
TX VCO
Receiver
Out of Lock Detector
Prescaler
RF Amplifier
Audio Amplifier
Receiver Audio Circuit
Low Pass Filter
Noise Detect Circuit SQ Board
Frequency Synthesizer Circuit
RF Section SM-2450/UHF
UHF Transmitter
Second Oscillator- Mixer- Limiter and FM Detector
Voltage Controlled Oscillator Circuit
First Mixer
Noise Detector
Squelch Mute Circuit
Squelch Noise Band Pass Filter
Speaker Audio Amplifier
Test Setup
Transmit Tests
SM-2150/VHF Alignment Procedure
PLL Alignment
Discriminator Tuning
Receiver Alignment RF
Squelch Adjustment
Automatic Power Adjustment
CTCSS/DCS Deviation Adjustment
Modulation Deviation Adjustment
Alignment 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 Replacement
Surface Mount Components
Surface Mount Component Replacement
Surface Mounted Integrated Circuit Replacement
Parts List Common to SM-2000
REF # Description
Digital Parts Common on Both VHF & UHF
Digital Section
Band Chart
REF # Description FRONT-END PCB Assembly Main Board Parts
Page-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 Band
Page-44 December
Page-45 December
Page-46 December
Page-47 December
Component Pinout
Page-49 December
Page-50 December
Voltage Charts SM-2150/VHF
IC409
Page-52 December
Transistor Voltage Chart
Voltage Charts SM-2450/UHF
IC404
Page-56 December
Trouble Shooting Chart SM-2000
Status Indications & Audible Tones
Page-58 December
Replacement Module Schematics
MMBV109
MA-4472 Microphone Schematic
Page-61- December
Page-62- December
Page-63- December
Page-64- December
SW5
SM-2000 Control Head
SM-2150/VHF Main Board Assy
Page-66 December
SM-2450/UHF Main Board Assy
Front
SM-2000
SM-2150/VHF Exploded View Parts List
Intentionally Left Blank
Related pages
Cooktop Troubleshooting for Bosch Appliances HDI8054U
Specifications6 for Intel MPCBL0001
Error messages Twain Driver for Konica Minolta TWIN Driver
110V Wiring Diagram G0596 Single Phase for Grizzly G0599
Rear View When Using Auto Iris Lens for Samsung SCB-2000
ONE-PIECEDOOR Installations for Craftsman 139.3043
Parts List for Stamina Products 1350
Language Code List for Samsung MM-DA25T/MEA
Using the menus on the Configure Device screen for HP 9000
What are the wall mounting specifications for
Samsung LE32C630
?
Top
Page
Image
Contents