AUDIO AND VISUAL SYSTEM (w/ Microphone) Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION

This circuit sends a microphone signals from the telephone microphone assembly to the radio receiver assembly.

WIRING DIAGRAM

A01361PE01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEPHONE MICROPHONE ASSEMBLY)


    1. Disconnect the C52 radio receiver assembly connector.

    2. Disconnect the I2 telephone microphone assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C52-22 (MIN+) - I2-2 (MCO+) Always Below 1 Ω
      C52-21 (MIN-) - I2-1 (MCO-) Always Below 1 Ω
      C52-22 (MIN+) - Body ground Always 10 kΩ or higher
      C52-21 (MIN-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here