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DV-SL10H (serv.man9). Troubleshooting - Sharp DVD Service Manual (repair manual). Page 4

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1-8-4
E5752TS
FLOW CHART NO.18
[No Disc] indicated. (When the focus error occurs.)
Replace the DVD Main CBA.
No improvement can be found.
Original DVD Main CBA is poor.
Replace the DVD Mecha.
No
Yes
Yes
Replace DVD Main CBA unit.
FLOW CHART NO.15
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no
operation is possible from the remote control unit.
Is no operation possible if replacing the remote 
control unit?
Replace the infrared remote control receiver.
Original remote control unit is poor.
Replace IC2002.
Is the "L" pulse sent out Pin(1) terminal of receiver
when the infrared remote control is activated?
Is the "L" pulse signal supplied to the Pin(20) of 
IC2002 when the infrared remote control is activated? 
Yes
Yes
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the infrared remote control receiver?
Yes
No
No
Check EV+5V line, and service it if defective.
No
No
FLOW CHART NO.16
The disc tray cannot be opened and closed. 
(It can be done using the remote control unit.)
Is 0.49V to 1.49V voltage inputted into Pin(8) of 
IC2002 when the "OPEN/CLOSE" button is activated?
See FLOW CHART NO. 17. <The disc tray cannot be opened and closed.>
Check the SW2005 and "OPEN/CLOSE" button, 
and service it if defective. 
Yes
No
FLOW CHART NO.17
The disc tray cannot be opened and closed.
Replace the DVD Main CBA Unit.
Is the "L" pulse sent out Pin(20) of IC2002
when the "OPEN/CLOSE" button is activated?
No improvement can be found.
Replace the DVD Mecha.
The malfunction of the original DVD Main CBA Unit. 
No
Replace IC2002.
No
Yes
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