Only For Training And Service Purposes - LG GU280 Service Manual

3. Technical Brief
L116 DNI FL101 B7686
C149 DNI
6 3
WCDMA_1900 ANT TX_IN
1
1
RX_OUT1
C127 8
RX_OUT2
DNI 4
GND1
2 5 2
GND2 GND4
9 7
GND3 GND5
WCDMA_1900
1880,1960MHz
2
C134 2.2p
WLNA_HB1_IN_M
1 L121
L118
DNI 10n
2
C138 2.2p
WLNA_HB1_IN_P
2
B7696
FL106
L120 4.7p C144 3.3n
6 3
1
WCDMA_2100
ANT TX_IN
2
1
RX_OUT1
L119
8
RX_OUT2
DNI
2
GND1
4 7
WCDMA_2100 GND2 GND4
5 9
GND3 GND5
1950 MHz,2140 MHz
C116 1.8n
1
WLNA_HB2_IN_M
2
1
1
L115 L117
1p DNI
2 2
C142 1.8n
1
WLNA_HB2_IN_P
2
FL103 B7671
R111 6.8n
C148 8.2p
6 3
1
WCDMA_LB
ANT TX_IN
2
1
C160 RX_OUT1
8
12n RX_OUT2
2
GND1
4 7
GND2 GND4
5 9
GND3 GND5
836.5 MHz,881.5 MHz
WCDMA_850/900
L108 33p
WLNA_LB_IN_M
1
L107 C124
10n 0.5p
2
L109 33p
WLNA_LB_IN_P
LGE Internal Use Only
0
1 PCS_IN_M
C126
DNI C133
+VPWR
2 2
1
C173
C151 C158
DNI
2.2u 330p
2
1 1
C128 1n
1
DNI C129
2
1 1
C135 C159
DNI DNI
0
1
1
PCS_IN_P
C143
C123 2 2
33p
2
L123 DNI
1 1
C132 C180
DNI DNI
2 2
R109
PWR_DET
1 2
68
Figure 1.2.3.2 WCDMA PAM schematic
+VPWR
2 2
C147 C130
330p 2.2u
1 1
ACPM-5201 U102
11
PGND
10 1
C119 1.5n
VCC2 VCC1
9 2 1
RFOUT RFIN
R103
8 3
1
2 ISO VBP PA_R1
49.9 7 4
GND VMODE PA_R0
6 5
CPL VEN 2 2 L125
C140 C155
DNI
1n 1n
1 1
WCDMA_PA_ON0
2
C139
1n
1
+VPWR +VPWR
2
2
C145
C146
680p
680p
1
1
VCC2 VCC1
6 5
RFOUT RFIN
7 4
ISO VBP
8 3
GND VMODE PA_R0
9 2
2 2
CPL VEN
10 1
C137 C156
PGND
11
DNI DNI
ACPM-5305 U104
1 1
WCDMA_PA_ON1
2
C136
DNI
1
- 18 - Copyright © 2009 LG Electronics. Inc. All right reserved.
C181 DNI
FL104 B9414
C118 2.7n
C117 33p
4 1 1
OUT IN
2 2
G3 G2 G1
5 3 2
2
1 1950MHz
C150
L122
C141
4.7n
0.5p
DNI
1
2
FL102 B9425
L110 DNI
C125 DNI
4 1
OUT IN
G3 G2 G1
2
5 3 2
L111 836.5MHz 1 WCDMA_850/900
L124
DNI
PA_R1
DNI
1
2

Only for training and service purposes

WCDMA_1900
WCDMA_1900_TX_OUT
WCDMA_2100_TX_OUT
WCDMA_2100
WCDMA_900_TX_OUT