Folder On/Off Troubleshooting - LG U970 Service Manual

4. TROUBLE SHOOTING

4.15 Folder ON/OFF Troubleshooting

Folder On/Off is worked as below :
Folder On/Off Event -> Flip(U800 pin OUT) is triggered(On : about 2.1V, Off : 0V) ->
MSM6280(U200) Sense the Folder Event
Start
Check the magnet in
Slide Assy
Approach the magnet to
U800
FOLDER_DETECT
is 0V?
Change the Main board
NO
Insert the magnet
Yes
NO
Change the U800 or
the key FPCB
Yes
Magnet
VREG_MSMP_2.7V
FOLDER_DETECT
Hall effect IC
- 112 -
SLIDE DETECT
U800
A3212EELLT-T
VDD
G1
OUT G2
C800
0.1u