Figure 35
Charger Interface Module
AUDIO CONTROLLER BOARD (562-894)
Features and Functions
Provides routing and preamplification of various audio inputs, on-board alarm tones, and on-board voice messages
to four separate audio outputs.
l
Allows the system to be configured for single or multichannel operation.
NOTE:
Voice and tone messages for Channel 1 are provided by a built-in Voicenone Generator (VTG)
Component Locations and Functions (Figure 36)
LED1
Lights when there is a trouble associated with the board.
The 740-637 masked chip contains the card’s program.
u42
The 740-681 chip is the Tones and Walk Test
TM Message Only Chip Set (Chip Set No. 1).
Identical in function to Switch SW1 on the 8-Zone Monitor Card.
Jumpers
JWl thru JW5 = Do not exist.
JW6 or JW7 = JW6 if Socket J3 contains a Backup VTG Card. Otherwise, JW7.
JW8 thru JW21 = Factory installed. DO NOT CHANGE.
C118. R85, and R90
Remove these components for Pre-Amp Level Audio Input (1 ‘Volt Peak-to-Peak).
Walk Test is protected by U.S. Patent No. 4,725,818.
59
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