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L102
15n
L104
DNI
TP9
VREG_MSMP_2.6V
WCDMA
WCDMA_850
WCDMA_850
WCDMA 1900
WCDMA_1900
C129
100n
14
RFOUT_LB
RFIN_LB
13
GND4
VMODE0
12
VCC2
U102
VMODE1
11
GND2
VCC1
10
RFOUT_HB
VEN_LB
9
GND1
VEN_HB
8
CPL_OUT
RFIN_HB
GND5
EAN62246301
SKY77196
about 6dB
R111
36
R113
150
LGE Internal Use Only
C103
4.7p
C157
100p
GND
SW102
C107
C108
1u
TP8
L136 2.7n
6
L137
C131
12n
2
DNI
4
5
TP7
FL105
C150
6
ANT
100p
2
C155
L142
GND1
4
DNI
DNI
GND2
5
GND3
+VPWR
1608
C128
C130
10u
82p
1
2
PA_R0
3
PA_R1
4
5
WCDMA_PA_ON2
6
WCDMA_PA_ON1
7
15
PWR_DET
R112
150
C105
33p
L107
100n
12
ANT
13
L108
GND4
14
VDD
15n
15
VC3
16
VC2
17
33p
VC1
C137
0.5p
FL102
B8553
1
ANT
RX1
8
RX2
3
TX
GND1
9
GND2
GND5
7
GND3
GND4
L152
1.2n
TP6
C174
LS36A
2p
1
RX1
L151
1.2n
8
RX2
3
TX
C164 8.2p
7
GND4
L156
9
GND6
15n
TP4
836.5MHz
FL103
C134 5.6p
4
OUT
G3
5
L139
L118
DNI
DNI
FL104 B9459
L155
3.6n
4
OUT
G3
G2
G1
5
3
L163
L141
DNI
TP3
12n
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Copyright © 2012 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
WCDMA_1900
WCDMA_850
FL101
5
GSM850RX1
4
GSM900RX2
3
GSM900RX1
2
GSM1800/1900RX2
1
GSM1800/1900RX1
LMSP33QJ-C65TEMP
C168
W850/GSM850_RX_P
33p
TP5
L117
10n
C169
W850/GSM850_RX_M
33p
W1900_RX_P
L114
12n
W1900_RX_M
C165
1.2p
TP1
B9425
R136
12
1
IN
G2
G1
3
2
R121
C119
8.2p
100
R122
12
1
IN
2
R143
L123
TP2
DNI
100
Only for training and service purposes
C162 6.8p
L167
C133
8.2n
DNI
W850_TX_OUT
W1900_TX_OUT
<PA_ENABLE Signal>
W1900 : WCDMA_PA_ON1
W850 : WCDMA_PA_ON2
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Troubleshooting
