Philips DVP3111, Service Manual

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Remote reception is insensitive or fails.
No
Remote reception is
insensitive or fails.
Check if the remote
control works properly.
Check battery
Check R1 R2 on front board
Use an oscilloscope to check
if there is output waveform
from the first pin IR of the
remote censor after pressing
button on the remote control.
IR1(PIN 3 - RCwaveform)
Check if there is IR
signal on pin 44 of
U2
Check if the power
supply voltage to the
remote censor is normal
Go
No
No
No
Yes
Yes
Yes
Correct connection
Yes
Change U2
IR waveform
Trouble shooting chart
5-7