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Remote reception is insensitive or fails.
Remote reception is
insensitive or fails.
Check if the remote
control works properly.
Check
supply voltage to the
remote censor is normal
Use an oscilloscope to check if there
is output waveform from the first pin IR
of
the
pressingbutton on the remote control.
Check if there isIR
signal on pin 54 of U1
Correct connection
Go
Yes
if
the
power
Yes
remote
censor
after
Yes
No
4-9
No
Check battery
No
Check R96、C93
No
REM1(PIN1 - RCwaveform)
Yes
Change U1
IRwaveform
Trouble shooting chart
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