Advertisement
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 remote
censor after pressing button on
the remote control.
Check if there is IR
signal on pin 134 of U1
Correct connection
Go
Yes
if
the
power
Yes
Yes
No
4-9
No
Check battery
No
Check R315、C315
No
REM301(PIN1 - RC waveform)
Yes
Change U1
IR waveform
T rouble shooting chart
Advertisement
