Advertisement
Remote reception is insensitive or fails.
Remote reception is
insensitive or fail.
Check if the remote
control works properly.
Check
supply voltage to the
remote sensor is normal
are normal.
Use an oscilloscope to check if
there is output waveform from
the first pin IR of the remote
sensor after pressing button on
the remote control.
Check if there is IR
signal on pin 72 of U3
Correct connection
Go
Yes
if
the
power
Yes
Yes
Yes
4-8
No
Check battery
Check
the voltages of
No
CE301 on the front board
No
REM301(PIN 3 - RC waveform)
No
Replace the U3
IR waveform
Trouble shooting chart
R315、
Advertisement
