Trouble Shooting Chart - Philips DVP6600 Service Manual

Disc cannot be read .
Disc cannot be read.
Check the FFC connection
between 24P and the loader.
Check whether there is laser
voltage (2V for VCD and 2.2V for
DVD) on Collector of
Check
peripheral components are
eroded or badly soldered.
Yes
Check if there is RFO signal on
pin8 of CN2. (The normal RFO
signal is a clear reticulated wave)
Check the connection
between U4
Replace U4 or loader.
Yes
Yes
Q6 Q5.
Yes
U4, U5, and
Yes
Yes
4-4
No
Check the loaded circuit
1.Check voltage on pin 44 of U4 varies
between 0 and 3.3V:
No
3.3V for VCD
0V for DVD
2.Check whether peripheral components
are eroded or defect
No
Re-solder or replace the defective parts
No
Check U4 and peripheral components
No
Correct connection

Trouble shooting chart