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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
ZD404
ZD402
ZD405
ZD403
CN404
4
3
2
1
Y-
Y+
X+
X-
ENZY0020701
CIRCUIT
TP05
1n
C236
1n
C237
C242
220n
R229
1K
1K
R230
VDD_IO_1V8
TP204
T12
P13
R12
P15
P14
T15
R15
1
1
F
1
T
8
1
T
8
1
A
1
A
1
1
R
7
A
7
B
0
1
C
0
1
B
X
T
_
1
S
2
I
0
A
W
_
1
S
2
I
L
C
S
_
C
2
I
A
D
S
_
C
2
I
F
F
O
N
O
1
C
N
2
C
N
3
C
N
4
C
N
S
F
D
D
V
MICN2
MICP2
VMIC
VUMIC
ACD
AGND
VREF
PWRON
ST
C_
T
R
A
U_
T
B
T
U
O_
M
C
P_
T
B
I2C_SDA
I2C_SCL
HS_JACK_DET
1T
NI
E
6T
NI
E
1
GI
D_
P
D
D
V
TP400
U402
B2
D1
C3
A2
D3
C2
A3
D2
B3
A1
C1
B1
NIRQ
SDA
AUX
Y+
GND
X+
NRST
Y-
VDD
X-
SCL
A0
TP401
VDD_IO_1V8
0.1u
C417
I2C_SDA
I2C_SCL
Y-
Y+
X+
X-
TOUCH_RST
TOUCH_INT
TP06
TP07
TP08
TP04
TP03
TP01