Keypad Interface - LG -S310 Service Manual

7. CIRCUIT DIAGRAM
16 15 14
L

KEYPAD INTERFACE

K
KEY_IN[0]
NUM 1
J KEY_IN[1]
NUM 4
KEY_IN[2]
NUM 7
I
KEY_IN[3]
STAR
L102
KEY_IN[4]
47n
H
KEY_IN[5]
L103 47n
KEY_OUT[0]
L104 47n
KEY_OUT[1]
L105 47n
KEY_OUT[2]
G
KEY_OUT[3]
KEY_OUT[4]
F
E
MAIN TO KEY FPCB
D
KEY_IN[0]
KEY_IN[1]
KEY_IN[2]
KEY_IN[3]
C
KEY_IN[4]
KEY_IN[5]
END_KEY
MAIN_KEY_BACKLIGHT
B
A
16 15 14
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
13 12 11 10
OK DOWN
KB100 KB101
NUM 2 NUM 3 MENU UP
KB102 KB103 KB104 KB105 KB106
NUM 5 NUM 6 SEARCH RIGHT
KB107 KB108 KB109 KB110 KB111
NUM 8 NUM 9 LEFT
KB112 KB113 KB114 KB115
NUM 0 SHARP
KB117 KB118 KB119
SEND
KB120
VBAT
VMIC_BIAS_P
CN100
G1 G2
1 24
2 23
NC 3 22
4 21
KEY_OUT[0]
5 20
KEY_OUT[1]
6 19
KEY_OUT[2]
7 18
KEY_OUT[3]
8 17
KEY_OUT[4]
9 16
10 15
MIC_P
11 14
MIC_N
12 13
G3 G4
AXT524124
13 12 11 10
9 8 7 6
POWER KEY
KB116
END_KEY
MAIN_KEY_BACKLIGHT
MEMS MIC
VMIC_BIAS_P
L100 47n 1
MIC_P
OUT
L101 47n 2
MIC_N
G1
3
SUMY0010610
G2
4 UNIT,-42dB,4.72*3.76*1.25
G3
5 SPM0410LR5H-QB
PWR
6 MIC100
G4
9 8 7 6
- 169 -
5 4 3 2
KEY BACKLIGHT
VBAT
R100 R101 R102 R103
R104 R105 R106 R107
C101
100 100 100 100 100 100 100 100
1u
LD100 LD101 LD102 LD103 LD104 LD105 LD106 LD107
VA100
MAIN ANTENNA
SW100
ANT100
G1
C102 0 C103 0
ANT G2
ANTENNA_PAD
C104 C105
1p
33n
ANT101
ANTENNA_PAD
5 4 3 2
1
L
K
J
I
H
G
F
E
D
C
B
A
1
LGE Internal Use Only