4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Schematic of WCDMA Band1,2,5,8 Tx Block
L1012
DNI
L1001
DNI
DNI
L1015
C1050
33p
27p
C1043
120
FB1001
SW1000
G1
ANT
G2
C1037
1.5n
C1032
1.2n
L1007
DNI
C1036
100p
VBAT
C1045
100p
C1033
1n
L1005
DNI
C1051
33p
SW1001
4
3
2
1
ANT
COMMON
G3
G4
L1011
33n
C1038 3.3p
100n
L1000
10n
C1044
L1002
15n
L1004
DNI
L1014
56n
L1003
DNI
C1035
2.7n
FL1001
21
20
15
19
10
18
16
8
11
7
9
6
5
12
4
3
13
2
14
1
17
VD
D
TRX_3
CLK
TRX_2
DRW
TRX_1
GND1
GND6
GND2
HB_TX
GND4
GND3
AN
T
LB_TX
VSPI
TRX_6
GND5
TRX_5
SS
TRX_4
PGND
L1032
DNI
L1033
DNI
C1084 100p
C1019
1.2n
C1046
10p
C1052
1n
L1008
4.7n
C1059
2.2n
1n
C1034
C1047
1.5n
C106
3
2.2n
FL1
49
47
45
43
42
41
40
39
38
37
36
35
34
23
22
21
20
17
16
15
14
19
18
10
8
6
5
4
2
44
46
50
12
48
33
32
31
30
29
28
27
26
25
24
13
11
1
3
7
9
Tx_Band1
Tx_Band2
Tx_Band5
Tx_Band8
GND7 GND8 GND9 GND10 GND11 GND12 GND13 GND14 GND15 GND16 GND17 GND18
ANT_GSM1800
ANT_Band1
ANT_Band2
ANT_Band5
ANT_Band8
GND1
GND2
GND3
GND4
GND5
GND6
Rx_GSM1800_1
Rx_GSM1800_2
Rx_Band1_1
Rx_Band1_2
Rx_Band2_1
Rx_Band2_2
Rx_Band5_1
Rx_Band5_2
Rx_Band8_1
Rx_Band8_2
GND19
GND20
GND21
GND23 GND24 GND25 GND26 GND27 GND28 GND29 GND30 GND31 GND32
L1019
DNI
DNI
L1024
C1031
33p
RX_B1_H2
RX_B2_M2
RX_B8_L1X
SPI_DRW
SPI_S
S
SPI_CL
K
VSPI
GSM_HB_TX
GSM_HB_TX
GSM_LB_TX
GSM_LB_TX
RX_GSM1800_M1
RX_GSM1800_M1X
RX_B8_L1
RX_B2_M2X
RX_B1_H2X
RX_B5_L2X
RX_B5_L2
B2/GSM1900
B5/GSM850
B8/EGSM
GSM1800_RX
B1
TP1
TP2
TP3
L1013
DNI
R1004
10
0.1u
C1042
U1002
17
18
19
20
21
10
11
12
13
14
15
16
9
8
7
6
5
4
3
2
1
B8_TX
B5_TX
GSM_LB_TX
B2_TX
B1_TX
GSM_HB_TX
B4_TX
HB_RFIN
SPI_SS
VCC
LB_RFIN
VSPI
NC
SPI_GND
SPI_CLK
SPI_DRW
GND
VCMO
S
FB_A
M
VBAT
RF_OUT
C1040
220n
VBAT_PAM
VBAT
C1054
DNI
C1048
5.6n
DNI
L1016
C1053
33p
C1041
100n
C1049
12n
R100
3
0
SPI_DRW
SPI_SS
SPI_CLK
VSPI
PA_RF
PA_POW_DET
TX_H
TX_L
CP_OUT
TP4