Philips DVP2851/55 Service Manual page 18

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
eroded or defect
Yes
Check if there is RFO signal
on pin17 of XP5. (The normal
RFO signal
reticulated wave)
Yes
Check the connection
between U1
Yes
Replace U1
U1 ,and xp5are
is a clear
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