Key Pad - LG GM750 Service Manual

3.12.3. Key Pad

There are 6 main key buttons that are controlled by MSM7200A. Refer to the Keypad circuit.
'Power Button' Key is connected to PMIC(PM7540:KPD_PWR_N).
KEY_ROW[0]
KEY_ROW[1]
KEY_ROW[2]
P O W
K P D
Figure. Power ON / OFF & Suspend Button Keypad circuit
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
KEY_COL[0]
Multitasking
FOCUS
CAMERA
Table. Key Matrix Mapping Table
E R O / N
_ P W R _ N
V A 1 0 1
E V L C 1 4 S 0
KEY_COL[1] OJ_NRST
VOL_DOWN
Optical
VOL_UP
Joystick
-
O F F K E Y
K B 1 0 1
2 0 5 0
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3. Technical Brief
LGE Internal Use Only