Electrical Parts Troubleshooting Guide - LG L6004R Service Manual

Troubleshooting Guide

Electrical Parts Troubleshooting Guide

LWC1264PAG/PAN/PCG, LWC1264QAG/QAS, LWC126CBHK0, LWC126CGMM0/CBMM1/LWC096CBMK0
Possible Trouble 1
Is the Trans input power
AC 220/240V?
YES
Is the Trans output power
about AC 13V?
YES
Is output Voltage of IC01D
DC 12V?
YES
Is output Voltage of IC02D
DC 5V?
YES
Is the reset circuit all right?
(The No.16 of
Micom is 5V.)
YES
Is the
connection between
Main and Display all right?
YES
Is the voltage No.20 of Micom
DC 5V?
YES
Exchange Main PCB Ass'y.
12 Window Air Conditioner
The unit does not operate.
NO
NO
Is shorted the Trans. output?
NO
NO
NO
NO
NO
• Check the Fuse.
• Check the Fuse.
• Check the wiring diagram.
• Check the wiring diagram.
• Check the Main
NO
YES
• Exchange the Trans.
• Exchange D02D~D05D.
• Exchange IC01D.
• Exchange IC02D.
• Exchange IC01A, C02A.
• Connect connector
• Check the PCB
PCB pattern.
exactly.
pattern.