LG LG-S310, Руководство по обслуживанию

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Only for training and service purposes LGE Internal Use Only
3. TECHNICAL BRIEF
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3.12 Keypad Switching & Scanning
There are 5 columns and 6 rows to operate Key
[Figure 3.12-1] Circuit Diagram (Main BB chip pin map)
[Figure 3.12-2] Circuit Diagram (Key map)
62
2
R
08
6
12
2
R
08
6
08
6
22
2
R
32
2
R
08
6
08
6
42
2
R
52
2
R
08
6
08
6
72
2
R
82
2
R
08
6
08
6
92
2
R
03
2
R
08
6
08
6
13
2
R
8
1
C
8
1
B
8
1
A
9
1
C
9
1
B
9
1
A
0
2
D
0
2
C
0
2
B
0
2
A
1
2
D
1
2
C
1
2
B
1
2
A
2
2
B
2
2
A
7
L
O
C
K
6
L
O
C
K
5
L
O
C
K
4
L
O
C
K
3
L
O
C
K
2
L
O
C
K
1
L
O
C
K
0
L
O
C
K
7
W
O
R
K
6
W
O
R
K
5
W
O
R
K
4
W
O
R
K
3
W
O
R
K
2
W
O
R
K
1
W
O
R
K
0
W
O
R
K
N_
C
O
E_
G
H
C
L
RT
C_
Y
R
OT
C
AF
]1[
NI
_
Y
E
K
]4[
T
U
O_
Y
E
K
]0[
NI
_
Y
E
K
]2[
NI
_
Y
E
K
]3[
NI
_
Y
E
K
]4[
NI
_
Y
E
K
]0[
T
U
O_
Y
E
K
]1[
T
U
O_
Y
E
K
]2[
T
U
O_
Y
E
K
]3[
T
U
O_
Y
E
K
]5[
NI
_
Y
E
K
N
E_
A
NL
_
MF
KEY
VDD33
47n
L102
47n L105
47n L104
47n L103
KB118 KB117
KB114 KB113 KB112
KB107 KB108 KB109
KB120
KB110
KB115
KB102
KB111
KB103
KB119
KB100 KB101
KB104 KB105 KB106
KEY_IN[5]
KEY_OUT[2]
KEY_OUT[1]
KEY_OUT[0]
KEY_IN[4]
KEY_IN[0]
KEY_IN[1]
KEY_OUT[4]
KEY_IN[2]
KEY_IN[3]
KEY_OUT[3]
NUM 1 NUM 2 NUM 3 MENU
NUM 4
SEND
NUM 5 NUM 6
NUM 7 NUM 8 NUM 9
STAR NUM 0 SHARP
LEFT
RIGHT SEARCH
DOWN OK
UP