Sharp AH-A129E Service Manual page 21

The machine does not function
at all with remote controller
Push button "O/I" on the
wireless remote controller.
Is transmitting
indicator of the remote
controller active ?
YES
Does beep sound
from the indoor unit ?
NO
Does connector
CN103 connect in place ?
YES
Using a tester,
measure the voltage
between terminals
of resistor R30
on the PWB ass'y.
Push the button
"O/I".
NO
Are batteries of the
wireless remote controller
good ?
Replace the wireless
remote controller.
YES
Is indicator lamp of
indoor unit proper ?
NO
Connect the
Replace the
connector
PWB with a
properly. new one.
When the signal is
received, does the voltage
change ?
Replace the PWB with a new
one.
21
NO
Replace the batteries
YES
with new ones.
YES
PWB is normal.
Inspect the outdoor unit.
NO
NO
Replace the display unit
YES
with a new one.
AH-A129E
AU-A129E