LG U310 Service Manual page 55

3. TECHNICAL BRIEF
3.11.6 Folder ON/OFF Operation
There is a magnet to detect the folder status, opened or closed.
If a magnet is close to the hall-effect switch, the voltage at pin1 of U600 goes to 0V. Otherwise, 2.6V.
This folder signal is delivered to MSM6275 GPIO43.
VREG_MSMP_2.7V
FOLDER_SENSE
R601
62
C600
0.1u
Figure. Schematic of Folder ON/OFF detection circuit
U600
A3212EELLT-T
VDD
OUT
C601
10p
- 56 -
G1
G2