Inspection Procedure 9

INSPECTION PROCEDURE 9: Image Of A DVD Is Played, But No Sound Is Played.

CAUTION: Before replacing the multivision display, ensure that the power supply circuit, the ground circuit, and the communication circuit are normal. (Check that the voltage is 10 V or more.)

COMMENTS ON TROUBLE SYMPTOM
The DVD or the multivision display may be defective.

PROBABLE CAUSES
- Defective DVD
- The multivision display may be defective

DIAGNOSIS

STEP 1. Check whether other sounds are emitted.

Check whether sound other than DVD is emitted
1. Check if the sound is output when the music server is used.
2. Check if the sound is output when the radio is used.
3. Check if the sound is output when a CD is used.

Q: Is sound other than DVD emitted?

YES : Go to Step 2.

NO : Diagnose the MMCS. Trouble Symptom Chart

STEP 2. Check a DVD to be inserted.

Check if the sound is recorded in the DVD, using other DVD players.

Q: Is sound data recorded in the DVD?

YES : Go to Step 3.

NO : Use a DVD containing sound data.

STEP 3. Check the DVD.

Check that the DVD is free of dirt or scratch.

Q: Is the check result normal?

YES : Go to Step 4.

NO : Clean the disk, use a disk without scratches and burrs, or remove the burrs from the disk. Then, reinsert the disk.

STEP 4. Temporarily replace the DVD with another DVD, and check the trouble symptom.

Check if the DVD is played normally when it is inserted.

Q: Is the check result normal?

YES : Replace the used DVD.

NO : Go to Step 5.

STEP 5. Check the service data log for the MMCS service mode.

1. Display the service data log for the MMCS service mode. Service Mode
2. Check if the service data log for drive and HDD is displayed.

Q: Is the service data log displayed?

YES (The service data log for drive is displayed.) : Check for foreign materials or condensation. Repair if there is an abnormality, and then go to Step 6.

YES (The service data log for HDD is displayed.) : Abnormalities relating to high or low temperature may be present. Check if the multivision display can be played at the operable temperature. If it cannot be played, go to Step 6.

NO : Go to Step 6.

STEP 6. Perform "Network/Connect Line Check" in the MMCS service mode.

1. Display "Network/Connect Line Check" in the MMCS service mode. Service Mode
2. heck if "DVD Drive OK" is displayed
3. Check if "HDD Drive OK" is displayed.

Q: Is the check result normal?

YES : Go to Step 7.

NO : Go to Step 8.

STEP 7. Check the playing method.

Check whether the disk was played normally and not with special playback (fast rewind, fast forward, slow, pause). Also, check whether the mute mode was selected. After that, check if the DVD is played normally when it is inserted.

Q: Is the check result normal?

YES : This diagnosis is complete.

NO : Go to Step 8.

STEP 8. Temporarily replace the multivision display, and check the trouble symptom.

After temporary replacement of the multivision display, check that the DVD is played normally when it is inserted.

Q: Is the check result normal?

YES : Replace the multivision display.

NO : Replace the DVD.