Table Of Contents - Motorola M400 Service Manual

Table of Contents

Contents2
Safe Handling3
General Safety Information4
Installation Safety Warning4
Programming5
Recommended Test Equipment6
Board Replacement And Calibration6
Performance Specifications For Conventional Low Band M400 Radio7
Performance Specifications For Conventional Vhf M400 Radio8
Performance Specifications For Conventional Uhf M400 Radio9
M400 Radio Service Aids16
Theory Of Operation17
Radio Features17
Electrical Characteristics17
Circuit Blocks17
Primary Power Source18
Physical Characteristics18
Operating Instructions18
Radio Self-Check18
Detailed Theory Of Operation19
Transmitter19
Rf Circuits19
Timing Circuits19
Audiosquelch Circuits20
Intericonnection Board20
Control Head20
Block Diagram21
Disassembly22
Installation Planning22
Pre-Installation Considerations22
Bench Tests22
Installation Guide23
Cable Routing23
Mounting The Radio23
Speaker And Accessories23
Cable Routing Details24
Installation Details25
Battery Hot In-Line Fuse Installation25
Vip Connector Details25
Control Head Installation Exploded View25
Installing Options26
Emergency Alert Switches26
External Alarms26
Footswitch26
Radio System Troubleshooting Chart27
Improper Advanced Control Head Operation28
No Ptt29
Transmitter Off Frequency29
Poor Receiver Performance29
Low Transmit Power30
Control Board34
Component Side34
Parts List34
Display Board36
Range 2 Low Band Power Amplifier Schematic46
Range 2 Low Band Power Amplifier Circuit Board47
Range 3 Low Band Power Amplifier Schematic48
Low Band Exciter Board Schematic54
Exciter/Power Control Board55
Range 1 Low Band Power Amplifier Schematic56
Range 1 Low Band Power Amplifier57
Advanced Control Head Microphone Schematic58
Advanced Control Head59
End Of Document79