TOA Electronics VM-2120 instruction manual Mounting AN Optional EV-200 Voice Announcement Board

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.

SW 1

DIP switch

1	2	3	4
O F F

ON

OFF

Always set to OFF.

(ON position is for factory test.)

DIP switch						EV-200 Board
1		1	2	3	4
	SW
		O F F

EV-200 surveillance signal output on-off (Switch No. 2)

Be sure to set to ON. (A 1 kHz signal output)

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.

Side: M4 x 8 machine screw 3 pieces each

Rear: M3 x 6 machine screw and M3 plain washer 4 pieces

Step 3. Insert the EV-200 connection cable coming from the EV-200 Board into connector CN8 in the amplifier.

CN6 CN8

Rear panel

EV-200 connection cable

EV-200 Board

CF card connector

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