Philips DVP3156, DVP3160K, DVP3166(K) Only DVD disc or only disc except DVD can be played

4-15	Trouble shooting chart
Only DVD disc or only disc except DVD can be played	Remark: Trouble shooting chart for
	DVP3156/XX, DVP3166(K)/XX

Only DVD disc, or only disc

except DVD can be Played.

Go
Check the FFC	No
connection between
24pin and the loader.

Check the loaded circuit

Yes

Check laser voltage (2V) output

on Collector of Q6, if pin 23 of

U2 is at low level.

Yes

Check whether there is voltage variance on pin 23 of U2.

No

No

Check the solder status on U2 and peripheral components

check if bad solder exist on U2 and peripheral components

Yes

Check whether pin 1 to pin38

of U2 and peripheral

components are badly

soldered, defected

Yes
Check Q2, Q3, Q4	No
whether in good
condition

No

Replace the bad spare parts

Correct connection

Yes

Change U2 or the loader.