Folder On/Off Troubleshooting - LG KU730 Service Manual

4.15 Folder ON/OFF Troubleshooting

Folder On/Off is worked as below :
Folder On/Off Event -> Flip(U600 pin 1) is triggered(On : about 2.1V, Off : 0V) ->
MSM6275 Sense the Folder Event
Start
Check the magnet in
Folder Assy
Yes
Approach the magnet to
U600
FLIP(U600 pin 1) is 0V?
Yes
Change the Main b'd
NO
Insert the magnet
NO
Check the U600
higher than 2.6V
FOLDER_DETECT
R601
VREG_MSMP_2.7V
62
FOLDER_DETECT
C600
0.1u
- 105 -
4. TROUBLE SHOOTING
Yes
NO
Work well?
Yes
END
U600, PIN1
U600 A3212EEH-T
1 6
OUTPUT VDD
2 5
NC1 NC2
4
GND2
3 7
GND1 PGND
Change the Upper b'd