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4. TROUBLE SHOOTING
- 74 -
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
͑
ͽͶ͑ ͺΟΥΖΣΟΒΝ͑ ΆΤΖ͑ ΟΝΪ͑
͑
Battery Level check (AWS)
FIG 17 Schematic of WCDMA IV Power Supply
Duplexer and Power amplifier
FIG 18 Schematic of WCDMA I, VIII Duplexer and PA Stage
FIG 19 Schematic of WCDMA IV Duplexer and PA Stage
{wGYG
{wGZG
{wG\
{wG[
{wG]
{wG^
{wG_
100p
C137
2.2u
C126
330p
C127
VBAT
100p
C135
330p
C125
100p
C136
U101
6
5
7
4
8
3
9
2
10
1
11
PGND
VCC1
VCC2
RFIN
RFOUT
VMODE_1
CPL_IN
VMODE_0
GND
VEN
CPL_OUT
AWS_ON
R0
6.8n
L118
1950MHz
FL104
5 3 2
4
1
IN
OUT
G1
G2
G3
897.5MHz
FL105
5 3 2
4
1
IN
OUT
G1
G2
G3
2.7n
C151
1p
L120
1732.5 MHz,2132.5 MHz
FL102
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
43
R100
p5
1
41
1L
03
1
10
1
R
n2.
1
80
1L
DNI
L112
DNI
L115
n2.
1
50
1L
100p
C137
1950 MHz,2140 MHz
FL100
9
5
7
4
1
2
8
3
6
ANT
TX_IN
RX_OUT2
GND1
RX_OUT1
GND2
GND4
GND3
GND5
2.2u
C126
330p
C127
VBAT
4p
C105
100p
C135
330p
C125
DNI
L116
33p
C131
1732.5 MHz
FL103
5 3 2
4
1
IN
OUT
G1
G2
G3
2.7n
L117
1p
C33
0.5p
L119
DNI
L121
n1
00
1
C
DNI
L107
10p
C109
2.2u
C108
330p
C107
VBAT
4.7n
L103
330p
C106
4p
C110
n1
92
1
C
10n
L102
1.5n
L113
DNI
C103
33p
C150
p5
1
42
1
C
DNI
C112
1.8n
L104
DNI
C119
1.8n
C130
DNI
C118
33p
C117
5.1n
L106
33n
L110
100p
C121
DNI
C123
03
1
20
1
R
33p
C115
10p
C104
0.5p
C102
DNI
L100
100p
C136
897.5 MHz,942.5 MHz
FL603
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
100p
C113
100p
C114
p5
1
11
1L
1n
L109
DNI
C156
U101
6
5
7
4
8
3
9
2
10
1
11
PGND
VCC1
VCC2
RFIN
RFOUT
VMODE_1
CPL_IN
VMODE_0
GND
VEN
CPL_OUT
p5
1
82
1
C
2.2n
C155
1n
C116
100p
C138
100p
C139
1.5n
C101
15n
C122
U801
51
8
7
9
6
10
5
11
4
12
3
13
2
14
1
RFIN_LOW
RFOUT_LOW
VMODE
GND3
VBP
VCC2
VCC1
GND2
VEN_LOW
RFOUT_HI
VEN_HI
GND1
RFIN_HI
CPL
D
N
G
P
DNI
C157
33p
C152
DNI
L151
0.5p
L150
33p
C153
2.2u
C154
DNI
L101
PWR_DET_IN
PRX_AWS_M
PRX_AWS_P
PRX_W900_P
TX_AWS
AWS_ON
W2100_ON
TRX_W2100
aws_dpx_tx_in
w900_dpx_tx_in
TX_W2100
TX_W900
PRX_W2100_M
PRX_W2100_P
W900_ON
R0
R0
TRX_W900
PRX_W900_M
TRX_AWS
Band8 : 900
Band 1 : 2100
Band 4 : AWS
6.8n
L118
1950MHz
FL104
5 3 2
4
1
IN
OUT
G1
G2
G3
897.5MHz
FL105
5 3 2
4
1
IN
OUT
G1
G2
G3
2.7n
C151
1p
L120
1732.5 MHz,2132.5 MHz
FL102
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
43
R100
p5
1
41
1L
03
1
10
1
R
n2.
1
80
1L
DNI
L112
DNI
L115
n2.
1
50
1L
100p
C137
1950 MHz,2140 MHz
FL100
9
5
7
4
1
2
8
3
6
ANT
TX_IN
RX_OUT2
GND1
RX_OUT1
GND2
GND4
GND3
GND5
2.2u
C126
330p
C127
VBAT
4p
C105
100p
C135
330p
C125
DNI
L116
33p
C131
1732.5 MHz
FL103
5 3 2
4
1
IN
OUT
G1
G2
G3
2.7n
L117
1p
C33
0.5p
L119
DNI
L121
n1
00
1
C
DNI
L107
10p
C109
2.2u
C108
330p
C107
VBAT
4.7n
L103
330p
C106
4p
C110
n1
92
1
C
10n
L102
1.5n
L113
DNI
C103
33p
C150
p5
1
42
1
C
DNI
C112
1.8n
L104
DNI
C119
1.8n
C130
DNI
C118
33p
C117
5.1n
L106
33n
L110
100p
C121
DNI
C123
03
1
20
1
R
33p
C115
10p
C104
0.5p
C102
DNI
L100
100p
C136
897.5 MHz,942.5 MHz
FL603
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
100p
C113
100p
C114
p5
1
11
1L
1n
L109
DNI
C156
U101
6
5
7
4
8
3
9
2
10
1
11
PGND
VCC1
VCC2
RFIN
RFOUT
VMODE_1
CPL_IN
VMODE_0
GND
VEN
CPL_OUT
p5
1
82
1
C
2.2n
C155
1n
C116
100p
C138
100p
C139
1.5n
C101
15n
C122
U801
51
8
7
9
6
10
5
11
4
12
3
13
2
14
1
RFIN_LOW
RFOUT_LOW
VMODE
GND3
VBP
VCC2
VCC1
GND2
VEN_LOW
RFOUT_HI
VEN_HI
GND1
RFIN_HI
CPL
D
N
G
P
DNI
C157
33p
C152
DNI
L151
0.5p
L150
33p
C153
2.2u
C154
DNI
L101
PWR_DET_IN
PRX_AWS_M
PRX_AWS_P
PRX_W900_P
TX_AWS
AWS_ON
W2100_ON
TRX_W2100
aws_dpx_tx_in
w900_dpx_tx_in
TX_W2100
TX_W900
PRX_W2100_M
PRX_W2100_P
W900_ON
R0
R0
TRX_W900
PRX_W900_M
TRX_AWS
Band8 : 900
Band 1 : 2100
Band 4 : AWS
TP2
TP3
TP6
TP4
TP7
TP5
TP8