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15. MOUNTING AN OPTIONAL EV-200 VOICE ANNOUNCEMENT BOARD
Caution: Leave the following work to a qualified service technician.
Be sure to switch off the power before the work.
Step 1. Set the DIP switch on the EV-200 Board as shown in the figure.
EV-200 surveillance signal output (Switch No. 2)
The EV-200 board always transmits a 1 kHz sine wave signal to an amplifier when the EV-200 Board is not
reproducing audio signals. The amplifier detects the existence of the 1 kHz signal. When the signal does not
exist, the amplifier judges the board's failure and causes the FAULT indicator to light.* (The signal indicating
the EV-200's failure is transmitted from the CONTROL I/O connector.)
* If Switch No. 2 is set to the OFF position, the FAULT indicator lights even when the board is operating
correctly.
Step 2. Remove 4 screws on the amplifier rear panel and a total of 6 screws on the sides to remove the
cover.
Step 3. Insert the EV-200 connection cable coming from the EV-200 Board into connector CN8 in the
amplifier.
1
2
3
4
O
F
F
SW 1
1
SW 1
2
3
4
O
F
F
EV-200 surveillance signal output on-off (Switch No. 2)
Be sure to set to ON. (A 1 kHz signal output)
DIP switch
DIP switch
ON
OFF
EV-200 Board
Always set to OFF.
(ON position is for factory test.)
Side: M4 x 8 machine screw ..... 3 pieces each
Rear: M3 x 6 machine screw and M3 plain washer ..... 4 pieces
Rear panel
EV-200 connection cable
CF card connector
EV-200 Board
CN8
CN6