Sharp DV-NC150U Service Manual page 29

FLOW CHART NO.5
The [No Disc] indication.
Replace the DVD Main CBA.
No improvement can be found.
Replace the DVD Mechanism.
FLOW CHART NO.6
Both picture and sound do not operate normally.
Replace the DVD Main CBA.
No improvement can be found.
Replace the DVD Mechanism.
No
Yes
No
Yes
Original DVD Main CBA is poor.
Original DVD Main CBA is poor.
1-10-6
H9641TS