Philips DVP3111/12 Service Manual page 12

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
connection between
24pin and the loader.
Yes
Check laser voltage (1.9V)
output on Collector of Q11, if
pin 17 of U2 is at low level.
Yes
Check whether there
is voltage variance on
pin 18 of U2.
Yes
Check whether pin 1 - 26 and
pin 125-128 of U2
components are
soldered, defected
Yes
Check Q5, Q6, Q7
whether in
condition
Yes
Change U2 or the loader.
5-4
No
FFC
No
No
No
and peripheral
badly
No
good
Check the loaded circuit
Check the solder status on U2 and
peripheral components
check if bad solder exist on U2 and
peripheral components
Replace the bad spare parts
Correct connection
Trouble shooting chart
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