Philips DVP3896, DVP3879, DVP3893, DVP3855 Only DVD disc or only disc except DVD can be played

4-5 Trouble shooting chart

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 FFC connection between 24pin and the loader.

Yes

Check whether there is laser voltage (1.9V for CD and 2.4V for DVD) on L101(R35) and L102(R32).

Yes

Whether voltage on pin14/pin15 of U1

varies between 2.4V and 3.3V (PIN14

=2.4V and PIN15=3.3V for CD; PIN14=3.3V and PIN15=2.4V for DVD)

Yes

Check whether pins of U1 and peripheral components are badly soldered, defected

Yes

Check Q103, Q104 whether in good condition

Yes

Change U1 or the loader.

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