Sharp DV-SL90UA Service Manual page 20

FLOW CHART NO.14
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
Is the normal control voltage inputted to Pin(4) of
IC2001? Refer to "FLOW CHART NO.12" <The key
operation is not functioning.>
Refer to "FLOW CHART NO.15" <The disc tray
cannot be opened and closed.>
FLOW CHART NO.15
The disc tray cannot be opened and closed.
Replace the DVD Main CBA.
No improvement can be found.
Replace the DVD Mecha.
FLOW CHART NO.16
[No Disc] indicated.
Replace the DVD Main CBA.
No improvement can be found.
Replace the DVD Mecha.
FLOW CHART NO.17
Both functions of picture and sound do not operate normally.
Replace the DVD Main CBA.
No improvement can be found.
Replace the DVD Mecha.
Yes
Yes
Yes
Yes
No
Replace the "OPEN/CLOSE" button (SW2108).
No
Original DVD Main CBA is poor.
No
Original DVD Main CBA is poor.
No
Original DVD Main CBA is poor.
1-8-5
E592BTS