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