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Inspection Procedure 8: The microphone does not respond to your voice normally.
 
 
cautionBefore replacing the multivision display, ensure that the power supply circuit, the ground circuit and the communication circuit are normal.
 
 
TECHNICAL DESCRIPTION (COMMENT)
If the microphone does not respond to your voice normally, the microphone or multivision display may be defective.
 
 
TROUBLESHOOTING HINTS
  • The multivision display may be defective
  • The microphone unit may be defective
  • The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
 
 
DIAGNOSIS
STEP 1. Check if the error message is displayed on the multivision display.
(Refer to .)
Is the error message displayed on the monitor?
: Refer to error massage (Refer to ), take necessary steps.
Go to Step 2.
 
STEP 2. Check the service data for multivision display.
Perform "Communications & Connection Check" in the diagnosis mode to check that the communication and wire connection with the "Microphone" are "Connected" (Refer to ).
Is the check result normal?
Go to Step 3.
Go to Step 4.
 
STEP 3. Check the microphone for multivision display.
Using the multivision display diagnosis mode, check if the "Mic" (Refer to ).
OK: Confirm that "Mic Level" changes when you speak to the microphone.
Is the check result normal?
Go to Step 6.
Go to Step 4.
 
STEP 4. Replace the microphone unit temporarily, and check the trouble symptom.
Is the check result normal?
Replace the microphone unit (Refer to ).
Go to Step 5.
 
STEP 5. Check of short to power supply, short to ground and open circuit in SENS, MIC+ and MIC- line between microphone unit connector and multivision display connector.
Is the check result normal?
Go to Step 6.
Repair the connector(s) or wiring harness.
 
STEP 6. Retest the system.
Check whether the microphone responds to your voice normally.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the multivision display (Refer to ).