Trouble shooting chart | |
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Only DVD disc or only disc except DVD can be played
Only DVD disc, or only disc
except DVD can be Played.
Go
Check the FFC connection between 24pin and the loader.
Yes
Check laser voltage (2.3V) output
on Collector of Q4 if pin87 of U2 is
at low level.
Yes 
Check whether there is voltage variance on pin 88 of U2.
Yes
Check whether pins of U2 and peripheral components are badly soldered, defected
Yes
Check Q4 whether in good condition
No | Check the loaded circuit |
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No | Check the solder status on U2 and | |
peripheral components | ||
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No | check if bad solder exist on U2 and |
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| peripheral components |
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No
Replace the bad spare parts
No
Correct connection
Yes
Change U2 or the loader.