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Troubleshooting > Trouble Diagnosis
4-7-3 Trouble diagnosis table
Interpreting the trouble diagnosis table:
1) Letters in brackets [ ] in "check points" columns show the name and side of circuit board.
Example: [MAN-A] shows that the check point exists on side A of MAN circuit board.
2) If there are multiple check points for one symptom, check the items from the top down.
Information:
Use the DZ-ACS1 adapter/charger to power DZ-MV380A for trouble diagnosis.
Prohibition
1) The LCD circuit board has a high-voltage section: When troubleshooting it, take great care to
prevent electric shock by wearing gloves, etc.
2) During troubleshooting, never look directly into the objective lens in optical pickup block, and
take great care that the reflected laser beam does not enter your eye.
Symptom
No power
Error message "DISC
ACCESS" appears and
disc is not recognized.
Table 4-7-1 Trouble Diagnosis Table (1/3)
Service
Check points
position
(A)
F0501
[MAN-B]
F0502
[MAN-B]
F0503
[MAN-B]
F0504
[MAN-B]
TL0503 [MAN-A]
IC1503-53 to 56
[MAN-B] (Do not
solder lead wire.)
TL0510 [MAN-A]
TL0511 [MAN-A]
TL0512 [MAN-A]
TL0513 [MAN-A]
TL0515 [MAN-A]
TL0517 [MAN-B]
TL0518 [MAN-B]
-----
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4 - 6
Troubleshooting due to
Detail of check
Continuity check
NG: Replace fuse.
Hi when power turns
NG: Replace MAN circuit
on (REG ON)
Approx. 3V DC
(SYS3V)
Approx. 1.5V DC
(C1.6V)
Approx. 3.2V DC
(CAM3V)
Approx. 4.8V DC
(CAM5V)
Approx. 3V DC (D3V)
Approx. 5V DC (D5V)
Approx. 2.5V DC
(D2.5V)
Approx. 15V DC
(C15V)
Error message does
Check connections of DRF
not disappear and
circuit board.
POWER switch does
not work.
Error message does
Replace disc drive unit.
not disappear after 3
seconds or more.
check results
board.
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