4-5
Only DVD disc or only disc except DVD can be played
No
No
Yes
Only DVD disc, or only disc
exce
ed.
Check the FFC connection
between 24pin and the
loader.
Check the loaded circuit
Check the solder status on U1 and
peripheral components
Check whether there is voltage
variance on pin 182 of U1.
check if bad solder exist on U1
and peripheral components
Replace the bad spare parts
Check whether pins of U1
and peripheral components
are badly soldered, defected
Check Q2 whether
in good condition
Yes
Yes
Yes
Go
Correct connection
Change U1 or the loader.
No
No
Yes
Check laser voltage (2.3V)
output on Collector of Q2, if
pin181 of U1is at low level.
No
Trouble shooting chart
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