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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3. TECHNICAL BRIEF
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
\WVXZZ
3.11 Keypad Interface
Figure 3-11-1 MAIN KEY STRUCTURE
3. TECHNICAL BRIEF
Figure 3-11-1 MAIN KEY STRUCTURE
KB431KB432KB433
CN401
4
3
2
1
VA419
KB404
KB434KB430KB435KB436
KB437
KB405KB406KB407KB445
KB411 KB410 KB409 KB438 KB408
KB403
KB402 KB401
KB419KB418
KB417
KB416KB415KB414KB413KB412
KB440 KB439
KB443
KB444 KB421 KB441
KB442 KB420
KB429KB428KB427KB426KB425KB424KB423KB422
R416 100ohms
VA417
R428 100ohms
R429 100ohms
VA418
KEY_COL0
KEY_COL2
KEY_COL3
KEY_COL4
KEY_ROW7
KEY_ROW7
KEY_COL5
KEY_COL5
KEY_ROW0
KEY_ROW1
KEY_ROW2
KEY_ROW5
KEY_ROW6
KEY_ROW6
KEY_ROW3
KEY_COL1
KEY_ROW4
@
Q W E R
T
Y
U
I
O
P
A
S
D
F G H
J
K
L
BACK
SHIFT
Z
X
C
V
B
N
M
?(QUES)
ENTER LOCK MESSAGE
SENDRIGHT SOFT
LEFT SOFT
SYM
.(PRIOD)
,(COMMA)
SPACE
OK
LEFT RIGHT
UP
DOWN
2.2u
C146
VRTC
100K
R117
100
R118
D101
END_KEY
KB101
PWRON
POWER ON