Folder On/Off Trouble - LG KT610 Service Manual

4.12 Folder on/off trouble

Folder On/Off(Close/Open) is worked as below :
→
Folder On/Off Event
Folder event transfer to GPIO5 of STn8810 and GPIO37 of MSM6280 directly
C418
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Flip(U402 pin 1,key board) is triggered(Open : about 2.7V, Close : 0V)
Start
Check the magnet in
folder Assy
Yes
No magnet to U402
FLIP(U402 pin#1, C418) is 0V?
No
Approach magnet to U402
FLIP(U402 pin#1, C418) is 0V?
YES
Work well?
Yes
End
U402
- 121 -
4. TROUBLE SHOOTING
NO
Insert the magnet
YES
Check the U402 Pin#4
for AP_VDD_IO_2.7V
NO
Change the Main Board
NO
Change the Main Board
→
magnet
LGE Internal Use Only