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Portable Radio
EP450
Service manual
Six Layer Circuit Board; Speaker And Microphone Schematic; Speaker And Microphone Parts List; Figure 7-1. Six-Layer Circuit Board: Copper Steps In Layer Sequence - Motorola EP450 Service Manual
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Service manual
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Basic service manual
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Contents
Table of Contents
Troubleshooting
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Table of Contents
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VHF Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
7.1.2
Six Layer Circuit Board
Figure 7-1. Six-Layer Circuit Board: Copper Steps in Layer Sequence
7.2
Speaker and Microphone Schematic
MK1
SP1
7.2.1
Speaker and Microphone Parts List
HKLN4216C
SIDE 1
SIDE 2
Figure 7-2. Speaker and Microphone Schematic
Reference
Motorola Part
Designator
No.
MK1
5085880L01
SP1
5085738Z08
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
INNER LAYERS
LAYER 4 (L4)
LAYER 5 (L5)
LAYER 6 (L6)
1
MATES WITH J470 ON
RADIO BOARD
2
1
MATES WITH J491 ON
RADIO BOARD
2
Description
Microphone, electret
Speaker assembly with
connector
7-3
June, 2005
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Chapters
Table of Contents
5
List of Figures
12
List of Tables
16
Table of Contents
Troubleshooting
Chapter 6 VHF Troubleshooting Tables
45
Troubleshooting Table for Synthesizer
47
Troubleshooting Table for Transmitter
48
Troubleshooting Table for Board and IC Signals
51
Table 12-1. Troubleshooting Table for Receiver
97
Table 12-2. Troubleshooting Table for Synthesizer
99
Table 12-3. Troubleshooting Table for Transmitter
100
Table 12-4. Troubleshooting Table for Board and IC Signals
102
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