Circuit Diagram - LG -E435 Service Manual

7. CIRCUIT DIAGRAM

C1001
C1003
0.5p
1
GND1
2
GND2
3
GND3
4
GND4
5
GND5
6
GND6
7
GND7
8
GND8
29
PGND1
30
PGND2
31
PGND3
32
PGND4
33
PGND5
34
PGND6
R1011
DCS_PCS_TX
47
DCS(1710-1785 MHz)
7dB
PCS(1850-1910 MHz)
R1006
GSM850_GSM900_TX
75
GSM850(824-849MHz)
GSM900(880-915MHz)
11dB
ANTENNA SWITCH MODULE LOGIC(SKY77584)
ANT_SEL0 ANT_SEL1
STAND-BY LOW
GTX_LB LOW
GTX_HB LOW
GRX_LB HIGH
GRX_HB HIGH
WTRX_HB HIGH
WTRX_LB LOW
WCDMA RX 2100 LNA Circuit
VDD_RX
L1017
2n
R1015
RX_WCDMA_2100_LNA_OUT
0
C1086
8.2n
R1016
RX_WCDMA_1900_LNA_OUT
DNI
FL1005
3
1575.42 MHz
1 G3 4
IN OUT
G1 G2
2 5
L1026 L1027 C1099
L1028
4.7n 100n DNI
1n
R1023
GPS_MODE
12
C1115
6.8p
LGE Internal Use Only
E435_REV_1.1
REV_1.1
C1002 6.8p
SW1000
100p
2
ANT COMMON
1
G3 G4
C1005 L1001
L1037 3 4
27n 15n
100n
RX_PCS_P
W850_W900_RTX
W1900_W2100_RTX
C1022 1.2n
1 9
GSM1800/1900_IN GSM1900_Bal_OUT2
44
2 8
PGND16
GND1 GSM1900_Bal_OUT1
43
PGND15 RX_PCS_M
42
PGND14 3 7
41 GND2 GSM1800_Bal_OUT2
L1004
PGND13
4.7n
4 6
GND3 GSM1800_Bal_OUT1
22
GND10
21
U1001 TRX3 FL1002
20
TRX2
19
TRX1
18
VRAMP
17
TXEN
16
MODE
15
GND9
C1046
100p
1 9
GSM850/900_IN GSM900_Bal_OUT2
2 8
40
PGND12 GND1 GSM900_Bal_OUT1
39
PGND11
38 3 7
GND2 GSM850_Bal_OUT2
PGND10
L1009
8.2n 4 6
GND3 GSM850_Bal_OUT1
FL1001
VBAT
R1002
GSM_PA_RAMP
2mm
2.2K
C1047
39p
C1039 C1038
C1118
6.8p 100p 10u
GSM_PA_EN
ANT_SEL0
C1126 C1123
DNI DNI
ANT_SEL1
ANT_SEL2
C1125 C1124
DNI DNI
WCDMA DUAL
ANT_SEL2 TX_EN
LOW LOW LOW
LOW HIGH HIGH
HIGH HIGH HIGH
LOW LOW LOW
HIGH LOW LOW
LOW HIGH LOW
W1900_W2100_RTX
HIGH LOW LOW
L1018
WB2100_MIX_INP
FL1003
1.8n
1 3
IN OUT W2100 RX(2110 - 2170 MHz)
DNI
4
_OUT C1083
G1 G3
2 5
2140MHz
L1024
WB2100_MIX_INM
1.8n
LNA for the GPS
Near To LNA
C1100 L1030
R1021
VREG_RF_2.7V_RTR W850_W900_RTX
DNI
12
4.7n
C1105
C1106
18p 0.1u
L1032
GND VDD
3 5
GPS_IN
S_D FIL_OUT
2 4 3.3n
U1004 C1113
C1114
DNI
DNI
M7
TX_ON RF_ON
C1
TCXO_RTR_19.2MHZ
TCXO
M3
RTR6285_SSBI
SBDT
C1014 100p A10
GSM850_GSM900_TX
LB_RF_OUT1
B9
W850_W900_TX_OUT
LB_RF_OUT2
C1015 1n
C1018 33p A9
DCS_PCS_TX HB_RF_OUT1
A8
HB_RF_OUT2
C1023 33p A7
W1900_W2100_TX_OUT HB_RF_OUT3
C1013 1.5n N9
RX_WCDMA_900_P
WPRXLBP
M9
RX_WCDMA_900_M WPRXLBM
N10
WPRXHBP
N11
L1002 WPRXHBM
DNI PCS(1930-1990 MHz)
L1003 2.2n
H13
WDRXLB
C1024 1.5n
J12
WDRXHB1
C1028 8.2p J13
WDRXHB2
RX_DCS_P
C13
RX_GSM_850_P
GCELL_INP
B13
L1006 L1005 DCS(1805-1880 MHz) RX_GSM_850_M GCELL_INN
DNI 3.9n
C12
RX_GSM_900_P
EGSM_INP
B12
RX_GSM_900_M
RX_DCS_M EGSM_INN
C1040 8.2p
E13
RX_DCS_P
DCS_INP
D13
RX_DCS_M
DCS_INN
C1041 10p
RX_GSM_900_P E12
RX_PCS_P
GPCS_INP
D12
RX_PCS_M
GPCS_INN
L1007 GSM(925-960 MHz)
L1008
DNI L1010 100p
G13
15n GPS_IN GPS_IN
C1054 33p A12
PDET_IN
PDET_IN
C1048 10p A2
R1004 12K
RX_GSM_900_M L1011 TX_RBIAS
1%
6.8n
L1035 8.2n L1014 DNI
K13
RX_WCDMA_HB
RX_GSM_850_P WPRXSE1
C1056 100p L13
WPRXSE2
GSM(869-894 MHz)
L1012
L1013
10n DNI
Near To RTR
L1036 8.2n
RX_GSM_850_M
RX_WCDMA_2100_LNA_OUT
RX_WCDMA_1900_LNA_OUT
GSM QUAD
C1073 C1074
22p
L1015 2n
RX_WCDMA_HB
L1016
C1076
3.6n
DNI
VBAT
FL1006
C1085 8.2p
6 1
ANT RX
L1022 10p
3
TX
L1020
L1021
3.9n DNI 2 9
GND1 GND6
4 8 C1089 C1091
GND2 GND5
DNI 0.75p
5 7
GND3 GND4
1950MHz,2140MHz
Band I
R1017
PDET_IN
51
R1018
8dB
110
VBAT
C1096
2.2u
L1029 3.3p
RX_WCDMA_900_P
C1103
C1104
DNI 6.8n
L1031 3.3p
RX_WCDMA_900_M
FL1007
C1111 33p
6 1
ANT RX1
8
RX2
L1034 3.9p
C1112
L1033 3
TX
DNI 5.6n
2
GND1
4 9
GND2 GND5
5 7 C1117
C1116
GND3 GND4
27n
8.2n
Band VIII
- 124 -
C1006
150p
A4
TX_IP
B5
TX_IN C1012
B3
TX_QP
150p
B4
TX_QN
E1 C1016 10n
VTUNE1
C1017 10n
N5
VTUNE2
C1019 1n
G1
VTUNE_GPS
C1020
150p
J1
PRX_QP RX0_Q_P
J2
PRX_QN RX0_Q_M
K2
PRX_IP RX0_I_P C1025
K1
PRX_IN RX0_I_M 150p
L1
RX1_Q_P
DRX_QP
L2
DRX_QN RX1_Q_M
M1
DRX_IP RX1_I_P
M2
DRX_IN RX1_I_M
N2
U1000 NC
A3
DAC_IREF DAC_REF
A11
VDDA1_1
D1
VDDA1_2
D2
VDDA1_3
F1
VDDA1_4
H1
VDDA1_5
H2
VDDA1_6
A5
VDDA2_1
A6
VDDA2_2
B1
VDDA2_3
B6
VDDA2_4
B10
VDDA2_5
F2
VDDA2_6
F13
VDDA2_7
G2
VDDA2_8
L12
VDDA2_9
M6
VDDA2_10
N3
VDDA2_11
N6
VDDA2_12
N7
VDDA2_13
VREG_RF_2.7V_RTR
VREG_MSME_1.8V
C1075
100p 0.1u
C1080
C1081 C1082
U1002 Close to pin1
330p
2.2u 330p
11
PGND 1950MHz
10 1 FL1004 C1087 3.3n
VCC VBAT L1023 4.7n
9 2 4 1
RF_OUT RF_IN OUT IN
8 3 G3 G2 G1
3G_PAM_MODE
CPL_IN VMODE1
7 4 5 3 2
GND VMODE0 PA_R0
6 5
CPL_OUT VEN PA_ON0 C1090
0.5p
REV_1.1 C1093 C1094
DNI DNI
R1019
110
C1095
C1097
680p
680p
U1003
11 897.5MHz
PGND
10 1 FL1008 L1102 12n
C1101 4.7n
VCC VBAT
9 2 4 1
RF_OUT RF_IN OUT IN
8 3 G3 G2 G1
CPL_IN VMODE1 3G_PAM_MODE
7 4 5 3 2
GND VMODE0 PA_R0
6 5
C1107
CPL_OUT VEN PA_ON1
DNI
C1109
C1110
DNI DNI
REV_1.1
Copyright © 2013 LG Electronics. Inc. All right reserved.
7. CIRCUIT DIAGRAM
TX_I_P
TX_I_M
TX_Q_P
VREG_RF_2.7V_RTR
TX_Q_M
VREG_RF_2.7V
R1000 0
+2.7V
0603 R1001 VDD_RX
0
VREG_SMPS_2.1V
VREG_SMPS_2.1V|VSNS_RF_SMPS
W1900_W2100_TX_OUT
C1088
DNI
W850_W900_TX_OUT
C1108
DNI
Only for training and service purposes