Folder On/Off Operation - LG U8110 Service Manual

3. TECHNICAL BRIEF

3.1.10 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 (U1 on keypad), the voltage at pin2 of U1 goes to 0V.
Otherwise, 2.8V.
This folder signal is delivered to MARITA GPIO43.
VCAM
C3204
0.1u
R3206
100K
Figure. Schematic of MARITA IrDA Interface
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C3205
10p
CAMERA_DET