Wireless Intercom System Service Manual
Page
Chapter
3ยท
Transmit, Receive & Audio Circuit Boards (Continued)
Audio Board Continued
PCB Audio Assembly (878520) Versions 1 thru 6 (Parts List) 3-45
Display Board 3-48
PCB Display 878519 (Parts Lists) 3-48
List
of
Illustrations
Figure
1
2
3
4
5
6
7
8
9
10
II
12
13
14
15
16
17A
17B
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Description Page
Headset XLR Connector Wiring 1-2
Front Panel-BTR200
1-3
Rear Panel - BTR-200 1-4
Location
of
Rev Level for Versions 1 and 2 (Audio Board)
2-1
Location
of
Rev Level for Versions 3
thlU
6 (Audio Board)
2-1
Location
of
Rev Level for Versions I and 2 (Receive Board) 2-2
Location
of
Rev Level for Versions I and 2 (Transmit Board) 2-3
Exploded View - BTR-200 2-4
Transmit Board Component Layout (Foil Side) 3-4
Transmit Board Component Layout (Component Side) 3-4
Schematic Diagram Transmit Board - Version 1 3-5
Schematic Diagram Transmit Board - Version 2 3-6
Schematic Diagram Receive Board 3-16
Receive Board Component Layout (Component Side)
Versions
I and 2 (70714000) 3-17
Schematic Diagram Receive Board Version 2 (750309) 3-18
Receive Board Component Layout (Component Side) Version
1..
3-19
Receive Board Component Layout (Foil Side) 3-19
Receive Board Component Layout (Component Side) Version 2 (750309) 3-19
Schematic Diagram Receive Board Version
I (750309) 3-20
Block Diagram Versions 1 and 2 3-31
Block Diagram Versions 3
thlU
6 : 3-32
Audio Board Component Layout (Component Side) Versions land 2 3-33
Audio Board Component Layout (Foil Sde) 3-34
Schematic Diagram Audio Board Version
I 3-35
Schematic Diagram Audio Board Version 2 3-36
Details
of
Board Differences Between Versions I and 2 3-37
Details
of
Board Difference
in
Versions 3, 4,
5,
and 6 3-38
Audio Board Component Layout (Component Side) Version 6
with Detailed Areas Showing Differences of Versions
3,4,5,
and 6 3-39
Audio Board Component Layout (Foil Side) Version 6 3-40
Schematic Diagram Audio Board Version 3 3-41
Schematic Diagram Audio Board Version 4 3-42
Schematic Diagram Audio Board Version 5 3-43
Schematic Diagram Audio Board Version 6 3-44
Display Board Component Layout (Foil Side) 3-48
Display Board Component Layout (Component Side) 3-48
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