- 51 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Troubleshooting Guide
Electronic Parts
❇
Refer to electronic contorol device drawing & schematic diagram.
The Product doesn’t operate at all.
Turn off the main power and wait to 10 seconds
Turn on the main power again.
Does "Beeping" sound is made from the indoor unit?
• Primarily, the operating condi-
tion of Micom is O.K.
• Check CN-DISP1
CN-DISP2 of indoor PCB
Check the voltage of power(AC220V/AC240V, 50Hz).
• The voltage of main power.
• The voltage applied to the unit.
• The connecting method of Indoor/Outdoor connecting cable (each color)
• The P.C.B. Ass'y
(Fuse, Noise Filter, Power Module, Bridge Diode, etc.)
Trouble 1
NO
YES
The operation check of the Indoor P.C.B. Ass'y
Procedure
1) The input voltage of power mod-
ule.
2) The output voltage of power mod-
ule.
4) IC04D(7805)
5) IC01A(KIA7036)
Specification
1) AC230V ± 30V
: Check the rated voltage
2) 12V ± 3V
4) DC5V
5) The voltage of micom pin 19
: DC4.5V
↑
Remedy
1) Check the power outlet.
2) Replace
P.C.B Ass'y
4) Replace P.C.B Ass'y
5) Replace P.C.B Ass'y
Содержание AS-W2465DH0
Страница 70: ...P No 3828A20462R July 2008 ...