Trouble shooting chart |
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
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 39 of U1
No
Correct connection
No | Check battery |
|
No
Check R315、C315
No
REM301(PIN1 - RC waveform)
Yes
Change U1
IR waveform
