Microphone Circuit (Overhead J/B-Multi Display)

MICROPHONE CIRCUIT (OVERHEAD J/B-MULTI-DISPLAY)

CIRCUIT DESCRIPTION

This circuit sends a microphone signal from the telephone transceiver and speaker relay to the multi display.
It also supplies power from the multi display to the telephone transceiver and speaker relay.

Wiring Diagram:

Step 1-3:

Step 4:

INSPECTION PROCEDURE