LG L5004R Service Manual page 28

Troubleshooting Guide
Possible Trouble 5
Is the voltage of Battery
about over 2.3V?
YES
Is the voltage No.16
of CN-DISP1 on Main P.W.B
Ass'y DC 5V?
YES
Is the connection of
CN-DISP1 all right?
YES
• Exchange Receiver Ass'y.
Possible Trouble 6
Is the IC01G all right?
YES
Is the connection of
CN-DISP1 all right?
YES
Does the Q01G,
Q02G, Q03G Q04G operate normally
on main P.W.B Ass'y?
YES
• Exchange the display
P.W.B Ass'y.
28 Room Air Conditioner
• Romote controller does not operate.
NO
NO
NO
• It displays abnormally on Display P.W.B Ass'y.
NO
NO
NO
NO
• Exchange the battery.
• Check the P.W.B pattern.
• Connect connector to
CN-DISP1 exactly.
• Exchange IC01G.
• Connect connector
to CN-DISP1 exactly.
• Exchange Q01G,
Q02G, Q03G, Q04G