Inspection Procedure 11: The picture and sound of external input are not played.

caution

Whenever the multivision display is replaced, ensure that the power supply circuit and the earthing circuit are normal. (Check that the voltage is 10 V or more.)

COMMENTS ON TROUBLE SYMPTOM

note

The connected equipment side or the connection from the audio and video adapter to the equipment may have a problem. Therefore, check that the operation status and the connecting method of the equipment connected to the multivision display and audio and video adapter before performing the diagnosis.

PROBABLE CAUSES

The multivision display may be defective
The audio and video adaptor may be defective
Damaged harness wires and connectors

DIAGNOSIS

Required Special Tools:

MB991223: Harness Set
MB992006: Extra Fine Probe

STEP 1. Check of DVD picture

Check that the DVD picture is displayed normally.

Q. Is the check result normal?

	Go to Step 2.

	Perform the troubleshooting related to the MMCS (Refer to ).

STEP 2. Check the audio and video adapter.

Check the audio and video adapter.(Refer to

)

Q. Is the check result normal?

	Go to Step 3.

	Replace the audio and video adapter.

STEP 3. Connector check: C-142 multivision display connector, C-120 audio and video adaptor connector

Q. Is the check result normal?

	Go to Step 4.

	Repair the connector concerned.

STEP 4. Check the wiring harness between C-142 multivision display connector (terminal 47, 63, 48, 64, 49) and C-120 audio and video adaptor connector (terminal 1, 2, 6, 4, 5).

Check the communication lines for open circuit or short circuit.

note

Prior to the wiring harness inspection, check intermediate connector C-133, C-140, and repair if necessary.

Q. Is the check result normal?

	Go to Step 5.

	Repair the wiring harness.

STEP 5. Temporarily replace the multivision display, and check the trouble symptom.

Check that the external input is normal.

Q. Is the check result normal?

	Replace the multivision display.

	Replace the audio and video adapter.