- 110 -
LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
109/140
4. TROUBLE SHOOTING
Folder on/off will
work properly
Is there the magnet
in the slide?
START
Replace U100
On Main Board
Place the magnet properly.
NO
YES
Voltage at pin 4
of U100 on
FPCB= 1.8V?
YES
NO
Voltage of VDD at U100
on Main Board = 1.8V?
NO
Resolder U100
On FPCB
YES
Open slide
Voltage at pin 1 of U100 on F
PCB =1.8V
Resolder U100 on FPCB
NO
YES
Close slide.
Voltage at pin 1 of U100 on
FPCB = 0V
YES
Replace U100 on FPCB
NO
CHECKING FLOW
4.18 Folder on/off Trouble