Figure 13-1. Four-Layer Circuit Board: Copper Steps In Layer Sequence; Figure 13-2. Speaker And Microphone Schematic - Motorola EP350 Service Manual

UHF1 Schematic Diagrams, Overlays, and Parts Lists: Speaker and Microphone Schematic
13.1.2 Four Layer Circuit Board
Figure 13-1. Four–Layer Circuit Board: Copper Steps in Layer Sequence
13.2 Speaker and Microphone Schematic
13.2.1 Speaker and Microphone Parts List
Plating (Au)
MIC1
SPK1

Figure 13-2. Speaker and Microphone Schematic

Reference
Motorola Part No.
Designator
MIC1 PMDN4139_R
SPK1
PMDN4067BR
1
MATES WITH J103 ON
RADIO BOARD
2
1
MATES WITH J603 ON
RADIO BOARD
2
Description
Microphone
Speaker & Cable
13-3
PSR ink
Copper Plate
Copper
PrePreg.
Copper
CCL (core)
Copper
PrePreg.
Copper
Copper Plate
PSR ink