LG LG-P350 - Troubleshooting Common Issues

3. TECHNICAL BRIEF
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3.12.3 KEY
3.12.3.1 Side key
There are 2 side key , Send, and END buttons that are controlled by MSM7227.
Refer to the circuit.
Figure. Volume Side key
Figure. End key
Figure. Send key
CN800
4
3
2
1R810
100
R811
100
R813
100
ZD801ZD800
ZD802
KEY_ROW[1]
KEY_COL[0]
KEY_COL[1]
VOL_UP
VOL_DOWN
VA801
R814
100K
KB800
PM_ON_SW
END
ZD805ZD803
KB801
R816
100
R812
100
KEY_ROW[0]
KEY_COL[1]
SEND