LG KB770 Service Manual page 62

3.10.4. Key Pad
There are 15 main key buttons on touch screen , 3 multi-function keys and 4 side keys in
Figure. Shows the Keypad circuit. 'END' Key is connected to PMIC(PM6650).
ROW(0)
ROW(1)
ROW(2)
ROW(3)
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Only for training and service purposes
COL(0)
UP
CAMERA Auto
Focus
LOCK
CLR
Table 3.10.4 Key Matrix Mapping Table
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_COL(0)
KEY_COL(1)
PM_ON_SW_N
Figure 3.10.4 Main Keypad Circuit
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COL(1)
DOWN
CAMERA capture
SEND
N/A
UP DOWN
SW101
LOC SEND
CLR
END
3. TECHNICAL BRIEF
LGE Internal Use Only