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