Philips DVP3600X/77 Service Manual page 14

Disc cannot be read .
Disc cannot be read.
Yes
Check the FFC connection
between 24P and the loader.
Yes
Check whether the current of R12 is
Less than 60mA for DVD and 65mA
for CD.
Yes
Check whether the components
between of U1 ,and xp3 are
eroded or defect
Yes
Check if there is RFO signal on
pin17 of XP3. (The normal RFO
signal is a clear reticulated wave)
Yes
Check the connection
between U1
Yes
Replace U1
4-4
No
Check the loaded circuit
No
Replace the Loader
No
Replace the defective parts
No
Check U1 and peripheral components
No
Correct connection
Trouble shooting chart