
4. TROUBLE SHOOTING
- 79 -
LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ZD100
100K
R126
KB100
VRTC
100
R125
PWRON
TP1
1V8_VDD
0.1u
C101
2.2u
C104
VUSB
VBAT
VCORE
VMMC
0.1u
C108
VAUX
0.1u
C105
470n
C107
VPMU
220n
C109
470n
C106
Speaker Supply
VBATSP
VDD1V8CP
PIN P16
PIN P18
ABB SUPPLIES
(10V)
PMU SUPPLIES
PIN K10
PIN M11
PIN L9
PIN P10
VBAT_PMU
PIN P12
PIN N10
(LS : not used)
0
R100
VDDMS
VDDTRX
1V8_VDD
VDDRF2
VDDTDC
VRF1
1u
C119
VDDXO
4.7n
C116
VBAT_RF2
470n
C122
47n
C118
47n
C117
VBAT
1u
C113
220n
C115
18p
C114
1V8_VDD
1V8_VDD
C121
1u
0.1u
C111
1V8_VDD
0.1u
C112
1u
C110
75
FB100
PIN_H12
Seperate and shield
PIN_H15
PIN_B16
RF SUPPLIES (DIRTY GND)
RF SUPPLIES (CLEAN GND)
(10V)
PIN_B14
PIN_E13
PIN_G16
PIN_G15
VDD_IO2
VDD_IO1
PIN F6,P6
PIN G11
DBB SUPPLIES
PIN K9
VDD_EBU
CIRCUIT
Figure 4.5.3 power block of LG-A258
C148
0.1u
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
VBAT
VRTC
VRF1
VDDRF2
VUSB
VMMC
VAUX
VBAT_RF2
VPMU
1V8_VDD
1V8_VDD
1V8_VDD
1V8_VDD
VBAT
10u
C128
22u
C126
5.6K
R106
3.9K
R103
VDDXO
VBAT
3.3u
L100
100K
R105
VDDMS
Q100
1
2
3
VCORE
470
R102
1V8_VDD
VDDTDC
1V8_VDD
1V8_VDD
1V8_VDD
VBUS
RF_TX_RAMP
(1%)
TP8
TP10
TP3
TP9
TP
TP6
TP5
TP11 TP7
TP13 TP1 TP4