LG GX200 Service Manual page 92

4.13.2 Circuit Diagram
KP_COL3
KP_COL2
KP_COL1
KP_COL0
KP_ROW0
[UP]
S102
1 2
KP_ROW1 [SEND]
S106
1 2
KP_ROW2
S110
1 2
3
KP_ROW3
S114
1 2
2
KP_ROW4
S118
1 2
1
KP_ROW5
KP_PWRKEY
VBAT
KP_COL0
KP_COL1
KP_PWRKEY
KP_COL3
KP_COL2
Key Board PAD Circuit
[DOWN]
S103
1 2
[OK]
S107
1 2
S111
1 2 1
6 L1410
100nH
C1412
33.0pF
S115
1 2 1
5 L1411
100nH
C1413
33.0pF
S119
1 2 1
4
L1412
100nH
C1414
33.0pF
S122
KP_COL0
2 1
ON/OFF
POWER KEY
B to B connector
KJ101
24
24
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
23
23
DF40C-20DP-0.4V(51)
Main Board Key pad Circuit
Check this around component of soldering work
properly of Key function "7" "8" "9" " *" "0" " #"
S108
1 2
S112_2
S112
C1409
2 1 2 1 2 33.0pF
9 L1407
100nH
S116_2
S116
C1410
2 1 2 1 2 33.0pF
8 L1408
100nH
S120_2
S120
C1411
2 1 2 1 2 33.0pF
7
L1409
100nH
KP_COL1
21
21
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
22
22
Check this component of KJ101
soldering work properly
-92-
ESD_PAD_1
S101
HSP1307
1 2
12
[SOFT_L]
KEY PAD
ESD_PAD_1
S105
HSP1306
1 2
12
[SOFT_R]
ESD_PAD_1
HSP1305
12
S109
1 2
S113
1 2 1 2 1
L1404 # L1401
100nH 100nH
C1406
33.0pF
S117
1 2 1 2 1
L1405 0 L1402
100nH 100nH
C1407
33.0pF
S121
1 2 1 2 1
*
L1406 L1403
100nH 100nH
C1408
33.0pF
S112_2
S116_2
S120_2
Keypad_LED
KP_ROW5
KP_ROW4
KP_ROW3
KP_ROW2
KP_ROW1
KP_ROW0
2
C1403
33.0pF
2
C1404
33.0pF
2
C1405
33.0pF