Motorola CDM Series Service Manual

Chapter 4: 4-1
6881091C63-A
Section 4
VHF (136-174 MHZ) 1-25W PCBS, SCHEMATICS, AND
PARTS LISTS
1.0 Allocation of Schematics and Circuit Boards
1.1 Controller Circuits
The VHF circuits are contained on the printed circuit board (PCB) which also contains the controller
circuits. This chapter shows the schematics for the VHF circuits only. Refer to the controller section
for details of the related controller circuits. The PCB component layouts and the parts lists in this
chapter show both the controller and VHF circuit components. The VHF schematics and the related
PCB and parts list are shown in the tables below.
Table 4-1 VHF 1-25W PCB 8486172B04 Diagrams and Parts Lists
PCB 8486172B04:
Main Board Top Side
Main Board Bottom Side
Page:
4: 4-3
4: 4-4
SCHEMATICS
Power Amplifier 1 - 25W
FRACN Synthesizer
Voltage Controlled Oscillator
Receiver Front-End
IF
4: 4-5
4: 4-6
4: 4-7
4: 4-8
4: 4-9
Parts List 4: 4-10
Controller version is T2
Table 4-2 VHF 1-25W PCB 8486172B06 Diagrams and Parts Lists
PCB 8486172B06:
Main Board Top Side
Main Board Bottom Side
Page:
4: 4-13
4: 4-14
SCHEMATICS
Power Amplifier 1 - 25W
FRACN Synthesizer
Voltage Controlled Oscillator
Receiver Front-End
IF
4: 4-15
4: 4-16
4: 4-17
4: 4-18
4: 4-19
Parts List 4: 4-20
Controller version is T5

Motorola CDM Series Specifications

General

Brand	Motorola
Model	CDM Series
Category	Two-Way Radio
Language	English