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4-9
Remote reception is insensitive or fails.
No
Remote reception is
insensitive or fails.
Check whether the remote
control works properly.
Check battery
Check R317
C303
C304
Use an oscilloscope to check whether
there is output waveform from the first pin IR
of the remote censor after pressing button
on the remote control.
U201(PIN 3 - RC
waveform)
Check whether there is IR
signal on pin 71 of U3
Check whether the power
supply voltage to the remote
censor is normal.
Go
No
No
No
Yes
Yes
Yes
Fix connection
Yes
Replace U3
IR
waveform
Trouble shooting chart
All manuals and user guides at all-guides.com
Содержание DVP520
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