LG LW8012ER Service Manual page 32

Troubleshooting Guide
Possible Trouble 4
Is the voltage NO.1 or 2 or 4
of IC01M DC 5V?
YES
Is the voltage NO.16 or 15 or 13
of IC01M 0V?
YES
• Check the RY-Hi or
RY-Med or RY-Lo.
• Check the wiring diagram.
Possible Trouble 5
Is the voltage of Battery
over 2.3V?
YES
Is the voltage No.10
of CN-AC/DC on AC PCB
Ass'y DC 5V?
YES
Is the connection of
CN-AC/DC OK?
YES
• Replace Receiver Ass'y.
32 Room Air Conditioner
FAN does not operate.
NO
NO
Remote controller does not operate.
NO
NO
NO
• Replace IC01M.
• Replace IC01M.
• Replace the battery.
• Check the PCB pattern.
• Check the PCB pattern.
• Connect connector to
CN-AC/DC exactly.