Motorola M400 Manuals

Manuals and User Guides for Motorola M400. We have 1 Motorola M400 manual available for free PDF download: Service Manual

Motorola M400 Service Manual

Motorola M400 Service Manual (80 pages)

Low Band, VHF and Uhf radios

Brand: Motorola | Category: Radio | Size: 16.6 MB

Table of Contents

Contents
2
Safe Handling
3
General Safety Information
4
Installation Safety Warning
4
Programming
5
Recommended Test Equipment
6
Board Replacement and Calibration
6
Performance Specifications for Conventional Low Band M400 Radio
7
Performance Specifications for Conventional VHF M400 Radio
8
Performance Specifications for Conventional UHF M400 Radio
9
M400 Radio Service Aids
16
Theory of Operation
17
Radio Features
17
Electrical Characteristics
17
Circuit Blocks
17
Primary Power Source
18
Physical Characteristics
18
Operating Instructions
18
Radio Self-Check
18
Detailed Theory of Operation
19
Transmitter
19
RF Circuits
19
Timing Circuits
19
Audiosquelch Circuits
20
Intericonnection Board
20
Control Head
20
Block Diagram
21
Disassembly
22
Installation Planning
22
Pre-Installation Considerations
22
Bench Tests
22
Installation Guide
23
Cable Routing
23
Mounting the Radio
23
Speaker and Accessories
23
Cable Routing Details
24
Installation Details
25
Battery Hot In-Line Fuse Installation
25
VIP Connector Details
25
Control Head Installation Exploded View
25
Installing Options
26
Emergency Alert Switches
26
External Alarms
26
Footswitch
26
Radio System Troubleshooting Chart
27
Improper Advanced Control Head Operation
28
No PTT
29
Transmitter off Frequency
29
Poor Receiver Performance
29
Low Transmit Power
30
Control Board
34
Component Side
34
Parts List
34
Display Board
36
Range 2 Low Band Power Amplifier Schematic
46
Range 2 Low Band Power Amplifier Circuit Board
47
Range 3 Low Band Power Amplifier Schematic
48
Low Band Exciter Board Schematic
54
Exciter/Power Control Board
55
Range 1 Low Band Power Amplifier Schematic
56
Range 1 Low Band Power Amplifier
57
Advanced Control Head Microphone Schematic
58
Advanced Control Head
59
End of Document
79

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