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Remote reception is insensitive or fails.
Remote reception is
insensitive or fails.
Go
Check if the remote
control works properly.
Yes
Check if the power supply
voltage to the remote censor
is normal are normal.
Yes
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.
Yes
Check if there is IR
signal on pin 106 of U3
No
Correct connection
All manuals and user guides at all-guides.com
4-9
No
No
Yes
Check battery
Check R315、C315
No
U201(PIN 3 - RC waveform)
Change U3
IR waveform
Trouble shooting chart
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