Only For Training And Service Purposes - LG KF700 Service Manual

3. TECHNICAL BRIEF
3.10.4 Key Pad
There are 18 key buttons. Shows the Key Matrix & Keypad circuit. 'END' Key is connected to
PMIC(PM6650).
ROW0
ROW(1)
ROW(2)
ROW(3)
VREG_MSMP_2.7V
KEY_ROW(0)
100ohm R101
KEY_ROW(1)
100ohm R102
KEY_ROW(2)
100ohm R103
100ohm R104
KEY_ROW(3)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
100ohm R105
KEY_COL(4)
LGE Internal Use Only
COL(0) COL(1)
1 2
4 5
7 8
* 0
[Table 3.9] Key Matrix Mapping Table
PM_ON_SW_N
C100
0.1u
100 101
1 2 3
103 104
4 5 6
106 107
7 8 9
HOT100 109
HOT4 0 HOT3
KEY MAP
[Fig. 3.17] Main Keypad Circuit
COL(2)
3
6
9
#
END
PRSB6.8C
102 SND
105 CLR
108 COM
CAMERA
CAMERA
HOT101
FOCUS
Copyright © 2008 LG Electronics. Inc. All right reserved.
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COL(3) COL(4)
SEND
CLR 0
COM CAMERA
FOCUS
VREG_MSMP_2.7V
OK
KEY_ROW(0)
KEY_COL(4)
SIDE KEY

Only for training and service purposes