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LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Technical brief
3.1.14 Key Pad
There are 24 buttons and 3 side keys in Figure 3-1-14. Shows the Keypad circuit.
‘END’ Key is connected ONSWAn for AB3000.
Table 3-1-8. Key Matrix Mapping Table
NOTTUB_DA
P
YEK
7
21B
K
N
OTTU
B_
DAPYEK
621
B
K
NOTTUB_
D
APYE
K
1
21
BK
NO
T
TUB_DAPYEK
02
1BK
N
OT
T
U
B_
DA
P
Y
E
K
5
21
B
K
N
O
TT
U
B_DA
P
YE
K
4
21B
K
N
OTT
UB_D
A
PY
E
K
71
1
B
K
NO
TTU
B_
DAP
Y
E
K
6
11
B
K
N
O
TT
U
B_DA
P
YE
K
511
B
K
N
OTTU
B_
D
A
PY
E
K
221BK
NOTTUB_D
A
PYE
K
81
1
B
K
NO
T
TU
B_
DAPYE
K
301
B
K
NOTT
UB_DAPY
E
K
101
BK
NOTTUB_D
A
P
Y
EK
001
BK
NOTTU
B
_DAPY
E
K
601
B
K
NOTTUB_DAP
Y
E
K
701BK
NOT
T
UB_DAPYEK
5
0
1BK
NOT
TUB_DAPY
E
K
4
0
1BK
NO
TT
U
B
_D
A
PYEK
321
B
K
NO
T
TUB_DAPYEK
011BK
NOTT
UB_D
APY
E
K
9
01
BK
NOTTU
B
_DAPY
E
K
801BK
NOTT
U
B_DA
P
YE
K
111BK
NOTTUB_
D
A
PY
EK
411BK
N
OT
TUB_
D
A
PY
E
K
911BK
NOTT
U
B_
D
A
PY
EK
311BK
N
OTT
UB_D
A
P
YEK
211BK
VSMF05LCC
D100
43
52
61
R
F
051
V
1015050
L
VCI
001AV
N_
AW
SNO
5N
I
YEK
4TUO
Y
E
K
3TUOYEK
2T
U
O
YEK
1
T
U
O
YE
K
0
TUOYE
K
0
N
IY
E
K
1
N
IY
E
K
2
NI
Y
EK
3NI
Y
EK
4
NIYE
K
DN
E
th
g
iR
n
wod-loVpu-loV
p
U
tf
eL
K
ODN
E
S
n
wo
D32
1
645
987
#*
0
R
LCaremaC
1-itl
u
M
T
V
D
E
L-buS
2-
itlu
M
Figure 3-1-14. MAIN PCB Keypad Circuit
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