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Manuals
Brands
Motorola Manuals
Radio
M400
Service manual
Motorola M400 Service Manual
Low band, vhf and uhf radios
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Table Of Contents
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80
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Contents
Safe Handling
General Safety Information
Installation Safety Warning
Programming
Recommended Test Equipment
Board Replacement and Calibration
Performance Specifications for Conventional Low Band M400 Radio
Performance Specifications for Conventional VHF M400 Radio
Performance Specifications for Conventional UHF M400 Radio
M400 Radio Service Aids
Theory of Operation
Radio Features
Electrical Characteristics
Circuit Blocks
Primary Power Source
Physical Characteristics
Operating Instructions
Radio Self-Check
Detailed Theory of Operation
Transmitter
RF Circuits
Timing Circuits
Audiosquelch Circuits
Intericonnection Board
Control Head
Block Diagram
Disassembly
Installation Planning
Pre-Installation Considerations
Bench Tests
Installation Guide
Cable Routing
Mounting the Radio
Speaker and Accessories
Cable Routing Details
Installation Details
Battery Hot In-Line Fuse Installation
VIP Connector Details
Control Head Installation Exploded View
Installing Options
Emergency Alert Switches
External Alarms
Footswitch
Radio System Troubleshooting Chart
Improper Advanced Control Head Operation
No PTT
Transmitter off Frequency
Poor Receiver Performance
Low Transmit Power
Control Board
Component Side
Parts List
Display Board
Range 2 Low Band Power Amplifier Schematic
Range 2 Low Band Power Amplifier Circuit Board
Range 3 Low Band Power Amplifier Schematic
Low Band Exciter Board Schematic
Exciter/Power Control Board
Range 1 Low Band Power Amplifier Schematic
Range 1 Low Band Power Amplifier
Advanced Control Head Microphone Schematic
Advanced Control Head
End of Document
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Programming
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Performance Specifications for Conventional Vhf M400 Radio
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Performance Specifications for Conventional Uhf M400 Radio
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Summary of Contents for Motorola M400
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