Philips PET717, Service Manual

Page: 18 / 44

5-4
Only DVD disc or only disc except DVD can be played
No
No
Yes
Only DVD disc, or only disc
except DVD can be Played.
Check the FFC
connection between
24pin and the loader.
Check the loaded circuit
Check the solder status on U3 and
peripheral components
Replace the bad spare parts
Check whether pins of U3 and
peripheral components are
badly soldered, defected
Check whether Q18
in good condition
Yes
Yes
Go
Correct connection
Change U3 or the loader.
No
Yes
Check laser voltage (2.3V)
output on Collector of Q18
Trouble shooting chart
No