Inspection Procedure 8: Microphone does not respond to your voice normally.


caution Before replacing the multivision display, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

COMMENTS ON TROUBLE SYMPTOM


If the microphone does not respond to your voice normally, the microphone or multivision display may be defective.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. Check if the error message is displayed on the multivision display.
(Refer to )

Q. Is the error message displayed on the monitor?
YES : Refer to error massage (refer to ), take necessary steps.
Go to Step 2.

STEP 2. Check of short to power supply, short to earth and open circuit in MIC PWR (5V), MIC+ and MIC- lines between microphone unit connector and multivision display connector
note Prior to the inspection, check joint connector (9) D-243 and intermediate connector D-01, and repair if necessary.

Q. Is the check result normal?
Go to Step 3.
Repair the connector(s) or wiring harness.

STEP 3. Retest the system.
Check whether the microphone responds to your voice normally.

Q. Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction).
Go to Step 4.

STEP 4. Substitute a known good multivision display, and check the trouble symptom.
(1)Temporarily replace the multivision display.
(2)Check that the microphone responds to your voice normally.

Q. Is the check result normal?
Replace the multivision display (Refer to ).
Replace the microphone unit (Refer to ).