Philips DVP3126K Service Manual page 15

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