LG -P970 Service Manual page 116

GSM_TX
PA_RAMP
DCS_PCS_TX
Band2
FL106
C148
L117 1.5n
ANT RX
33p
TP2
TX
L109
8.2n
GND1 GND6
GND2 GND5
GND3 GND4
1880,1960MHz
Band8
FL108
C153 33p L119 3.9n 6
ANT RX
TP2
TX
C131
2
DNI
GND1 GND4
4
GND2 GND5
5
GND3 GND6
897.5 MHz,942.5 MHz
Band1
FL110
C169 27p L114 2.2n 6
ANT RX
TP2
TX
L123
10n 2
GND1 GND4
4
GND2 GND5
5
GND3 GND6
1950MHz, 2140MHz
For testing, Max power output is needed.
LGE Internal Use Only
ENWY0003901(Hirose)
SW101
G1
G2 ANT
1
L133
1.2n
C170
C171
1.8p
1.8p
PA_POW_DET
VBAT
C178
1u
C180
15p
C185 15p
TP3 11
10
9
100p L110
8
CPL
7
L122
8.2n
6
DNI
C157
C164 C165
1n 2.2u
TP3
1
L129 1n
3
14
RFOUT_LOW
13
GND3
7
12
VCC2
C174
8 L124
11
GND2
0.5p
9 DNI
10
RFOUT_HI
9
GND1
8
CPL
CPL
1
TP3
3 L125 1.5n
7
C194
8 C104
1p
9
DNI
SW102
C142 33p
2
ANT COMMON
G3 G4
3 4 L107
27n
VBAT
C150 C151 C152
22u
10n 22p
25
TX_LB
24
GND_LB
23
DET
22
SS
SS
21
DRW
DRW
U104
20
CLK CLK
19
VSPI
VSPI
C179 0.1u 18
GND_SPI
17
VCMOS
16
VRAMP
15
GND_HB
14
TX_HB
VBAT
C145 C146 C147
1n 2.2u 100p
U103
PGND
1
VCC2 VCC1
2
RFOUT RFIN
3
PA_MODE
ISO VBP
4
PA_MODE2
GND VMODE
5
PA_EN_1900
CPL VEN
C167
100p
1
RFIN_LOW
2
PA_MODE2
VMODE
3
PA_MODE
VBP
U105
4
VCC1
5
PA_EN_900
VEN_LOW
6
PA_EN_2100
VEN_HI
7
RFIN_HI
- 116 - Copyright © 011 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
TP1
L108
DNI
1
ANT
2
GND1
3
RX_850
RX_L1
4
GND2
5
RXTX_L2
6
GND3
7
RXTX_H
8
GND4
9
RXTX_M1
10
GND5
11
RX_M2 RX_1900
12
RX_1800
RX_M3
FL107
3
L130 2.7n G3
C154 33p L131
4 1
OUT IN
G2 G1
5 2
C107
DNI
1880MHz
VBAT
FL109
L113
C172 33p C173
4 1
OUT IN
2.7n
G3 G2 G1
C177
5 3 2
DNI
897.5 MHz
FL111
3
L115
G3
C187 33p C188
4 1
OUT IN
2.7n
G2 G1
5 2
C193
DNI
1950MHz
Only for training and service purposes
TP4
2.7n
TX3G_M1_1900
C158
DNI
TP4
56p
TX3G_L_900
C176
DNI
TP4
10p
TX3G_H_2100
C192
DNI