LG KG300 Service Manual page 63

5. Circuit Diagrams
LCM & Keypad Interface
VBATBB
P4 PWRKEY
P1 KCOL0
P1 KCOL1
P1 KCOL2
P1 KCOL3
P1 KROW0
P1 KROW1
P1 KROW2
P1 KROW3
P1 KROW4
P1 KROW5
LED_COM
P4 LED_COM
Earphone Jack
MicroPhone
P1 MICP0
P1 MICN0
1
1 GND1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29 GND2
B200 B200
MMZ1608S102C MMZ1608S102C
C200 100N C200 100N
L0603 L0603
C212 C212
C205 C205 33P 33P
100P 100P C0402 C0402
C0402 C0402
B202 B202
MMZ1608S102C MMZ1608S102C
C208 100N C208 100N
L0603 L0603
C211 C211
33P 33P
C0402 C0402
KCOL3
KCOL2
KCOL1
KCOL0
KROW0
SW101 SW101 SW102 SW102
KSW KSW KSW KSW
[SOFT_R] [SOFT_L]
KROW1
SW103 SW103 SW104 SW104
KSW KSW KSW KSW
[SEND]
KROW2
SW105 SW105 SW106 SW106
KSW KSW KSW KSW
[3]
KROW3
SW109 SW109 SW110 SW110
KSW KSW KSW KSW
[6]
KROW4
SW113 SW113 SW114 SW114
KSW KSW KSW KSW
[9]
KROW5
SW117 SW117
KSW KSW
[#]
MICIN+
C0402 C0402
R202 R202
N.C_0R N.C_0R
ESD205 ESD205
R0402 R0402 ESD ESD
C0402 C0402
R203 R203
1K 1K
R0402 R0402
- 64 -
SW107 SW107 SW108 SW108
KSW KSW KSW KSW
[2] [1]
SW111 SW111 SW112 SW112
KSW KSW KSW KSW
[5] [4]
SW115 SW115 SW116 SW116
KSW KSW KSW KSW
[8] [7]
SW118 SW118 SW119 SW119
KSW KSW KSW KSW
[0] [*]
MICBIASP
R206 R206
SMT Microphone
1K 1K
U201 U201 R0402 R0402
1 4
OUT POW
3 2
GND IN/C
SPM0204HE5 SPM0204HE5
SPM0102ND3 SPM0102ND3
C202 C202
10U 10U
C0805 C0805
P3 USBD-
MICIN+
P3 USBD+
D201 D201
PESD5V0L5UY PESD5V0L5UY
SC88 SC88