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 whether there is laser voltage (1.9V for CD and 2.4V for DVD) on L101(R35) and L102(R32).
Yes 
Whether voltage on pin14/pin15 of U1
varies between 2.4V and 3.3V (PIN14
=2.4V and PIN15=3.3V for CD; PIN14=3.3V and PIN15=2.4V for DVD)
Yes
Check whether pins of U1 and peripheral components are badly soldered, defected
Yes
Check Q103, Q104 whether in good condition
Yes 
Change U1 or the loader.
No | Check the loaded circuit |
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No | Check the solder status on U1 and | |
peripheral components | ||
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No | check if bad solder exist on U1 and |
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| peripheral components |
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No
Replace the bad spare parts
No
Correct connection
