Philips DVP5100, Service Manual, Page: 16 / 44

4-5
O nly D VD disc or only disc except D VD can be played
N o
N o
Yes
O nly D VD disc, or only disc
except D VD can be Played.
C heck the FFC
connection betw een
24pin and the loader.
C heck the loaded circuit
C heck the solder status on U 2 and
peripheral com ponents
C heck w hether there
is voltage variance on
pin 23 of U 2.
C heck if bad solder exist on U 2 and
peripheral com ponents
R eplace the bad spare parts
C heck w hether pin 1 to pin38
of U 2 and peripheral
com ponents are badly
soldered, defected
C heck Q 3, Q 1,
R 10-R 12 w hether
in good condition
Yes
Yes
Yes
G o
C orrect connection
C hange U 2 or the loader.
N o
N o
Yes
Trouble shooting chart
N o
C heck laser voltage (2V)
output on C ollector of Q 5, if
pin 23 of U 2 is at
low level.
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