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8
QWERTY-To-MAIN
+VPWR
VREG_USIM_3.0V
VREG_MSME_1.8V
27
26
25
24
23
KEY_BACKLIGHT
22
21
USIM_RESET_N
20
KPDPWR_N
19
USIM_DATA
18
17
16
USIM_CLK
15
14
QKEY_I2C_SCL
13
QKEY_I2C_SDA
12
11
10
MICBIAS
9
QKEY_RESET
7
QKEY_INT
6
5
MIC_1N
4
3
2
MIC_1P
1
CN1100
KEY BACK LIGHT
+VPWR
LD1100
LD1101
C1119
0.1u
R1121
R1122
100
100
VA1104
RF Connector
G2
ANT
G1
SW100
22n
0.5p
L1001
L1000
LGE Internal Use Only
POWER KEY
R1100
KPDPWR_N
SIM_CONNECTOR
VREG_USIM_3.0V
USIM_RESET_N
USIM_CLK
C1116
VA1102
C1118
VA1101
22pF
22p
KEY_BACKLIGHT
R1125
MIC_1P
ANT1100
ANT1101
ANT1102
C1123
39p
R1126100
MIC_1N
100p
100p
C1131
C1132
KB1100
100
QKEY_RESET
VA1100
VREG_USIM_3.0V
R1120
15K
J1100
C1
C5
VCC GND1
C2
C6
RST
VPP
C3
C7
USIM_DATA
CLK
IO
C9
C12
C1117
GND2 GND5
C10
C11
GND3 GND4
VA1103
0.1uF
KEY BACK LIGHT
KEY_COL0
KEY_COL1
MIC
KEY_COL2
KEY_COL3
MICBIAS
R1123
KEY_COL4
1K
KEY_COL5
R1124
C1120
C1121
1.2K
47p
10u
100
0.1u C1122
MIC1100
1
2
0.1u
C1124
R1127
VA1105
VA1106
2.2K
(Close to Mic)
- 139 -
KEY ENCODER
VREG_MSME_1.8V
R1101
100ohms
C1100
C1101
R1102
1UF
120K
0.1u
VREG_MSME_1.8V
R1103
R1104
3.3K
3.3K
1
21
R1105
TEST
P40
2
20
R1106
SEL_28P
P41
3
19
R1107
P57
P42
U1100
QKEY_I2C_SDA
4
18
R1108
P56
P43
PP2106M3
5
17
R1109
P55
P44
6
EUSY0300008
16
R1110
QKEY_INT
P17
P45
7
15
R1111
QKEY_I2C_SCL
P15
P46
R1112
R1113
R1114
R1115
R1116
R1117
R1118
KB1101
KB1102
KB1103
KB1104
KB1105
T
Q
W
E
R
KB1109
KB1110
KB1111
KB1112
KB1113
P
O
A
S
D
KB1117
KB1118
KB1119
KB1120
KB1121
J
K
L
BACK SPACE
FN
KB1126
KB1127
KB1128
KB1129
KB1130
N
M
, (Comma)
V
B
KB1133
KB1134
KB1135
KB1136
KB1137
HOT1
.(PRIOD)
SPACE
HOT2
SYM
LEFT SOFT
KB1141
KB1142
KB1143
KB1144
KB1145
OK
LEFT
RIGHT
DOWN
FUNCTION_L
UP
7. CIRCUIT DIAGRAM
470
KEY_ROW0
470
KEY_ROW1
470
KEY_ROW2
470
KEY_ROW3
470
KEY_ROW4
470
KEY_ROW5
470
KEY_ROW6
470
KEY_ROW7
C1102
C1103
C1104
C1105
C1106
C1107
C1108
C1109
10p
10p
10p
10p
10p
10p
10p
10p
470
KEY_COL0
470
KEY_COL1
470
KEY_COL2
470
KEY_COL3
470
KEY_COL4
470
KEY_COL5
C1110
C1111
C1112 C1113
C1114
C1115
10p
10p
10p
10p
10p
10p
KB1106
KB1107
KB1108
Y
U
I
KB1114
KB1115
KB1116
H
F
G
KB1122
KB1123
KB1124
X
Z
C
KB1125
KB1131
KB1132
ENTER
SHIFT
@
KB1138
KB1139
KB1140
RIGHT SOFT
SEND
KB1146
KB1147
FUNCTION_R
Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Troubleshooting
