Philips DVP2851/55 Service Manual page 19

Only DVD discor only disc except DVD can be played
Only DVD disc, or only disc
except DVD can be Played.
Go
Check
connection between
24pin and the loader.
Yes
Check whether the current
of R12 is Less than 60mA
for DVD and 65mA
CD.
Yes
Check whether thecomponents
between U1 and xp5are eroded
or defect
Yes
Check
connection of xp5 are
eroded or defect
Yes
Change U1
the FFC
for
whether the
4-5
No
Check the loaded circuit
No
Replace loader
No
Replace the bad spare parts
No
Replace the bad xp5
Trouble shooting chart