4. TROUBLE SHOOTING
- 105 -
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
XW_VX[^
CIRCUIT
U U
U U
U
U
U
U
TP01
TP02
TP03
TP04
TP05
TP06
TP07
TP08
ZD307
CN304
4
3
2
1
ZD308 ZD309
ZD306
X-
Y-
Y+
X+
TOUCH CONNECTOR
ENZY0020702
TP1
TP06
TP3
9
R
5
A
5
B
8
C
0
A
W_
1
S2I
L
C
S_
C2I
A
D
S_
C2I
FF
O
N
O
2.2K
R123 R124
2.2K
1V8_VDD
I2C_SCL
I2C_SDA
ST
C_
T
B
PWRON
1u
C337
TP310
TP309
10n
C338
1V8_VDD
4.7K
R313
DNI
R314
DNI
R315
VB301
2
1
C320
2.2u
0.1u
C321
2.2u
C322
1V8_VDD
VBAT
U301
19
5
51
14
13
7
6
17
4
3
2
18
9
8
16
10
11
1
12
VDN
YP
D
N
G
PWM/CLK
HEN
SCL
VDDP
XP
XN
YN
VDD
LEN
SADD
SDA
GAIN
VDP
T
A
B
V
INTB
PGND
I2C_SCL
I2C_SDA
X-
Y-
Y+
X+
VIB_PWM
VIB_EN
TOUCH_EN
TOUCH_INT
Touch & Haptic Driver Ckts
TP05
TP08
TP07
TP03
TP04
TP01
TP0