LG -V909DW Service Manual page 75

SAW Filter
33p 33p
C150 C150
33p
C150
C152 C152
C152
C131 C131
C131
33p 33p
33p
LGE Internal Use Only
1950MHz 1950MHz
TP9
1950MHz
C151 C151 2.7n 2.7n
C151 2.7n
0.5p 0.5p
0.5p
L150 L150
L150
FIG 20 Schematic of WCDMA I Tx SAW Filter
TP10
33p 33p 33p 33p
C153 C153
33p 33p
C153
L151 L151
L151
DNI DNI
DNI
FIG 21 Schematic of WCDMA VIII Tx SAW Filter
TP11
L117 L117
L117
2.7n 2.7n
2.7n
0.5p 0.5p
0.5p
L119 L119
L119
FIG 22 Schematic of WCDMA IV Tx SAW Filter
FL104 FL104
TP12
FL104
L109 L109
L109
4 4 1 1
4 OUT OUT IN IN 1
G3 G3 G2 G2 G1 G1
OUT IN
G3 G2 G1
5 5 3 3 2 2
5 3 2
15n 15n
15n
C122 C122
C122
FL105 FL105
897.5MHz 897.5MHz
FL105
897.5MHz
TP13
4 4 1 1
4 OUT OUT IN IN 1
G3 G3 G2 G2 G1 G1
OUT IN
G3 G2 G1
5 5 3 3 2 2
5 3 2 C112 C112
C112
DNI DNI
DNI
1732.5 MHz 1732.5 MHz
FL103 FL103
TP14
1732.5 MHz
FL103
4 4 1 1
OUT OUT IN IN
4 1
G3 G3 G2 G2 G1 G1
OUT IN
G3 G2 G1
5 5 3 3 2 2
C33 C33
5 3 2
C33
1p 1p
1p
- 75 - Copyright © 2011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
1n 1n
1n
TX_W2100 TX_W2100
TX_W2100
C157 C157
C157
DNI DNI
DNI
L104 L104
L104
TX_W900 TX_W900
1.8n 1.8n
TX_W900
1.8n
L118 L118 6.8n 6.8n
L118 6.8n
TX_AWS TX_AWS
TX_AWS
C156 C156
C156
DNI DNI
DNI
Only for training and service purposes