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Microphone Circuit between Microphone and Radio and Navigation Assembly

4steps
~24min
2/5difficulty
Done 0 of 4

DESCRIPTION

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

It also supplies power from the radio and navigation assembly to the microphone.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 INSPECT RADIO AND NAVIGATION ASSEMBLY

INSPECT RADIO AND NAVIGATION ASSEMBLY
  1. Measure the voltage according to the value(s) in the table below.

Standard voltage

Standard voltage

2 CHECK HARNESS AND CONNECTOR

CHECK HARNESS AND CONNECTOR
  1. Disconnect the radio and navigation assembly connector R10.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

3 CHECK HARNESS AND CONNECTOR (MICROPHONE - RADIO AND NAVIGATION ASSEMBLY)

CHECK HARNESS AND CONNECTOR (MICROPHONE - RADIO AND NAVIGATION ASSEMBLY)
  1. Disconnect the microphone connector T13 and radio and navigation assembly connector R10.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Test yourself

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