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CDM Series
Motorola CDM Series Basic Service Manual
92 pages
Manual
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CDM Series
™
Professional Series
T
wo-W
ay Mobile Radio
Basic Service Manual
2
Table of Contents
Foreword
4
Computer Software Copyrights
4
Document Copyrights
4
Disclaimer
4
Trademarks
4
Table of Contents
5
Chapter 1 Introduction
9
Scope of Manual
9
Warranty and Service Support
9
Warranty Period and Return Instructions
9
After Warranty Period
9
Piece Parts Availability
10
Technical Support
11
Radio Model Information
12
Chapter 2 Maintenance
13
Introduction
13
Preventive Maintenance
13
Inspection
13
Cleaning Procedures
13
Safe Handling of CMOS and LDMOS Devices
14
Repair Procedures and Techniques - General
14
Disassembling and Reassembling the Radio - General
15
Radio Disassembly - Detailed
15
Control Head Removal
15
Top Cover Removal
16
Transceiver Board Removal
17
Lowband Transceiver Board Removal
18
Removing and Replacing Defective LDMOS Devices (Q1402 and Q1403)
18
CDM750 Control Head Disassembly
19
CDM1250, CDM1550, CDM1550•LS, and CDM1550•LS+ Control Head
21
Disassembly
21
Radio Assembly
22
CDM750 Control Head
22
CDM1250, CDM1550, CDM1550•LS, and CDM1550•LS+ Control Heads
22
Radio Chassis and Transceiver Board
22
Lowband Radio Chassis and Transceiver Board Assembly
23
Control Head Fitting
24
Service Aids
31
Test Equipment
32
Programming Test Cable Configuring and Wiring
33
Chapter 3 Transceiver Performance Testing
35
General
35
Setup
35
Initial Equipment Control Settings
36
RF Test Mode
36
Chapter 4 Radio Programming and Tuning Procedures
43
Introduction
43
CPS Programming Setup
43
Radio Tuning Setup
45
Initial Test Equipment Control Settings
45
Transmitter Tuning
46
Power Amplifier (PA) Bias Tuning
46
Reference Oscillator Warp
47
DAC Tuning (Lowband Radios Only)
48
Transmit Power Tuning
49
Power Amplifier (PA) Voltage Limit Tuning (VHF 1-25W and UHF 1-25W LDMOS Radios Only)
49
Modulation Balance Attenuation
50
VCO Attenuation
51
VCO Attenuation (25 Khz)
51
VCO Attenuation (20 Khz)
52
VCO Attenuation (12.5 Khz)
52
DTMF Deviation Tuning
53
MDC1200 Deviation Tuning (MDC Radios Only)
53
Receiver Tuning
53
Front End Filter Tuning
54
Rated Volume Tuning
57
Squelch Tuning
58
Chapter 5 Power up Self-Test
61
Error Codes - Conventional Radios
61
CDM1550 LS + Passport Tone Options
62
CDM1550 LS Special Diagnostic Functions
63
CPS/PPCPS Programming Setup
64
Chapter 6 Accessories
65
Accessories
65
Antennas
65
Mounting
66
Remote Mount
66
Loudspeaker
66
Audio
66
Hands Free Operation
67
Base Control
67
Desktop
68
Installation
68
Option Boards
68
Buttons
68
Error Codes - Passport
71
Chapter 7 Model Chart and Test Specifications
73
UHF 403-470 Mhz (Conventional)
73
UHF 450-512 Mhz (Conventional)
74
UHF 403-470 Mhz (Conventional, LTR)
75
UHF 450-512 Mhz (Conventional, LTR)
75
UHF 403-470 Mhz (Conventional, Ltr/Passport)
76
UHF 450-512 Mhz (Conventional, Ltr/Passport)
77
Lowband 29.7-36 Mhz
78
Lowband 36-42 Mhz
78
Lowband 42-50 Mhz
79
VHF 136-174 Mhz
80
VHF 136-174 Mhz (LTR and Passport)
81
Specifications
82
Glossary
87
Other manuals for Motorola CDM Series
Detailed Service Manual
686 pages
Service Manual
178 pages
Service & Installation Manual
32 pages
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Motorola CDM Series Specifications
General
Frequency Range (VHF)
136-174 MHz
Number of Channels
16
Frequency
VHF
Frequency Range (UHF)
403-470 MHz
Battery Life
8 hours (typical)
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