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4. TROUBLE SHOOTING
- 77 -
LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C101
0.1u
BAT100
1u
C120
VRTC
R101
6.8K
VDD_IO_1V8
VUSB_3V1
VBAT
VCORE_1V2
VMMC_2V85
C106
0.1u
VAUX_2V85
0.1u
C103
0.1u
C102
470n
C105
VPMU_1V3
VBAT
C100
0.1u
220n
C107
470n
C104
BACK UP Battery
(10V)
Speaker Supply
(10V)
VBATSP
VDD1V8CP
PMU SUPPLIES
PIN K10
PIN M11
PIN L9
PIN P10
VBAT_PMU
PIN P16
PIN P18
PIN P12
ABB SUPPLIES
PIN N10
PIN L12
75
FB100
FB103
75
C118
1u
VDD_IO_1V8
VDDMS
VDDTRX
VDD_IO_1V8
C116
0.1u
VDD_IO_1V8
VDDRF2
VDDTDC
VDD_IO_1V8
VRF1
1u
C114
VDDXO
4.7n
C111
VBAT_RF2
470n
C119
47n
C113
47n
C112
0.1u
C117
VBAT
C108
1u
220n
C110
18p
C109
C115
1u
PIN_H12
Seperate and shield
VDD_IO2
VDD_IO1
PIN_H15
PIN_B16
RF SUPPLIES (DIRTY GND)
RF SUPPLIES (CLEAN GND)
(10V)
PIN F6,P6
PIN G11
PIN_B14
PIN_E13
PIN_G16
PIN_G15
DBB SUPPLIES
PIN K9
VDD_EBU
CIRCUIT
Q100
EBK61572201
LSCR523EBFS8
2
1
3
VBAT
CT
R
V
1F
R
V
2F
R
D
D
V
1
V3
_
B
S
U
V
58
V2
_
C
M
M
V
58
V2
_
X
U
A
V
2F
R_
T
A
B
V
3
V1
_
U
M
P
V
8
V1
_
OI
_
D
D
V
8
V1
_
OI
_
D
D
V
8
V1
_
OI
_
D
D
V
8
V1
_
OI
_
D
D
V
VBAT
C122
10u
C121
22u
5.6K
R107
R105 3.9K
O
X
D
D
V
VBAT
3.3u
L100
100K
R106
S
M
D
D
V
2
V1
_
E
R
O
C
V
R104 470
8
V1
_
OI
_
D
D
V
C
DT
D
D
V
8
V1
_
OI
_
D
D
V
VDD_IO_1V8
2
V1
_
E
R
O
C
V
8
K
7
T
8
R
9
M
6
T
8
M
8
L
2
1
L
7
1
C
7
1
F
2
1
H
5
1
G
1
1
M
9
L
4
1
F
0
1
P
4
1
E
6
1
G
8
1
R
4
1
B
3
1
E
5
1
H
4
1
G
5
1
A
2
1
J
5
1
F
6
1
F
7
1
P
6
1
P
0
1
G
0
1
K
7
R
1
1
J
1
1
H
0
1
F
3
A
1
1
T
2
1
P
8
H
6
P
6
F
9
K
1
1
G
0
1
N
8
1
P
3
1
L
6
1
L
9
R
9
T
8
T
9
P
1
D
S
_
D
D
V
B
F
_
1
D
S
1
D
S
_
S
S
V
W
S
1
D
S
1
S
M
S
S
V
2
S
M
S
S
V
P
S
T
A
B
V
U
M
P
_
T
A
B
V
1
O
I
D
D
V
2
O
I
D
D
V
1
U
B
E
_
D
D
V
2
U
B
E
_
D
D
V
L
L
D
_
D
D
V
U
M
P
V
U
M
P
_
S
S
V
1
E
R
O
C
S
S
V
2
E
R
O
C
S
S
V
3
E
R
O
C
S
S
V
4
E
R
O
C
S
S
V
5
E
R
O
C
S
S
V
E
R
O
C
V
E
R
O
C
D
D
V
P
C
8
V
1
D
D
V
R
S
L
S
S
V
X
R
T
S
S
V
X
R
S
S
V
1
8
V
1
D
D
V
P
M
A
R
V
G
I
D
_
S
S
V
S
M
D
D
V
O
X
D
D
V
C
D
T
D
D
V
G
E
N
D
D
V
T
A
B
V
O
C
D
S
S
V
X
U
A
V
O
X
S
S
V
C
M
M
V
B
S
U
V
2
F
R
D
D
V
1
F
R
V
O
L
_
S
S
V
F
R
S
S
V
C
T
R
V
N
E
S
N
E
S
P
E
S
N
E
S
G
H
C
D
D
V
S
C
B
S
C
G
H
C
V
T
N
H
S
V
VUSB_LDO_4V9
P
M
A
R_
XT
_F
R
(1%)
TP1
TP
TP3
TP4
TP5 TP6
TP7
TP8
TP9
TP10
TP11