Microphone Circuit Between Microphone and Radio Receiver

AUDIO / VISUAL: AUDIO AND VISUAL SYSTEM: Microphone Circuit between Microphone and Radio Receiver
- Microphone Circuit between Microphone and Radio Receiver

DESCRIPTION

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

It also supplies power from the radio receiver assembly to the microphone amplifier assembly.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (TSW- - MGND)

(a) Disconnect the R10 radio receiver assembly connector.





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

Standard Resistance:





(c) Reconnect the radio receiver assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (INNER REAR VIEW MIRROR ASSEMBLY - RADIO RECEIVER ASSEMBLY)

(a) Disconnect the I8 inner rear view mirror assembly connector.





(b) Disconnect the R10 radio receiver assembly connector.

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

Standard Resistance:





(d) Reconnect the inner rear view mirror assembly connector.

(e) Reconnect the radio receiver assembly connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. INSPECT RADIO RECEIVER ASSEMBLY (MCVD VOLTAGE)

(a) Measure the voltage according to the value(s) in the table below.





Standard Voltage:





NG -- REPLACE RADIO RECEIVER ASSEMBLY

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

4. REPAIR OR REPLACE HARNESS OR CONNECTOR

5. REPAIR OR REPLACE HARNESS OR CONNECTOR

6. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table

7. REPLACE RADIO RECEIVER ASSEMBLY Removal