Motorola CDM1250, Basic Service Manual

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iii
Table of Contents
Foreword .........................................................................................................ii
Product Safety and RF Exposure Compliance ............................................................... ii
Computer Software Copyrights....................................................................................... ii
Document Copyrights ..................................................................................................... ii
Disclaimer ....................................................................................................................... ii
Trademarks..................................................................................................................... ii
Chapter 1
Introduction ................................................................................................ 1-1
1.1 Scope of Manual................................................................................................. 1-1
1.2 Warranty and Service Support............................................................................ 1-1
1.2.1 Warranty Period and Return Instructions.................................................. 1-1
1.2.2 After Warranty Period ............................................................................... 1-1
1.2.3 Piece Parts Availability.............................................................................. 1-2
1.2.4 Technical Support ..................................................................................... 1-3
1.3 Radio Model Information..................................................................................... 1-4
Chapter 2
Maintenance ............................................................................................... 2-1
2.1 Introduction ......................................................................................................... 2-1
2.2 Preventive Maintenance ..................................................................................... 2-1
2.2.1 Inspection.................................................................................................. 2-1
2.2.2 Cleaning Procedures ................................................................................ 2-1
2.3 Safe Handling of CMOS and LDMOS Devices................................................... 2-2
2.4 Repair Procedures and Techniques — General................................................. 2-2
2.5 Disassembling and Reassembling the Radio — General................................... 2-3
2.6 Radio Disassembly — Detailed .......................................................................... 2-3
2.6.1 Control Head Removal.............................................................................. 2-3
2.6.2 Top Cover Removal .................................................................................. 2-4
2.6.3 Transceiver Board Removal ..................................................................... 2-5
2.6.3.1 LowBand Transceiver Board Removal............................................... 2-6
2.6.3.2. Removing and Replacing Defective LDMOS Devices (Q1402 and
Q1403) .............................................................................................. 2-6
2.6.4 CDM750 Control Head Disassembly ........................................................ 2-7