Philips DVP3520/55, Руководство по обслуживанию

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4-9
Remote reception is insensitive or fails.
No
Remote reception is
insensitive or fails.
Check if the remote
control works properly.
Check battery
Check R315
ǃ
C315
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.
REM301(PIN1 - RC waveform)
Check if there is IR
signal on pin 2 of U1
Check if the power
supply voltage to the
remote censor is normal
Go
No
No
No
Yes
Yes
Yes
Correct connection
Yes
Change U1
IR waveform
Trouble shooting chart