Circuit Diagram - LG -P715 Service Manual

7. CIRCUIT DIAGRAM

SW1001
SW1002
G1
2
G2 ANT ANT COMMON
1
G3 G4
L1002 3 4
L1003
DNI DNI
0603
R1002
GSM_PA_RAMP
2.2K
C1015
39p
R1003
1
GSM_HB_TX HB_IN
2
68
GND1
3
DCS(1710-1785 MHz)
R1004 R1005 LB_IN
10dB Atten
4
PCS(1850-1910 MHz) VAPC
100 100
5
VBATT
6
BS2
7
BS1
8
R1007
GSM_LB_TX TXEN_
68
GSM850(824-849MHz)
R1009 R1008
29
10dB Atten.
PGND1
GSM900(880-915MHz) 30
100 100
PGND2
31
PGND3
32
2mm
PGND4
33
PGND5
+VPWR 34
PGND6
0603
C1032 C1033
0603
10u 47p
ANT_SEL3
ANT_SEL2
ANT_SEL1
ANT_SEL0
ANTENNA SWITCH MODULE LOGIC(SKY77544)
ANT_SEL0 ANT_SEL1 ANT_SEL2
GSM850/GSM900 TX LOW HIGH LOW
DCS1800/PCS1900 TX HIGH HIGH LOW
PCS1900 RX LOW LOW LOW (X)
LOW HIGH
DCS1800 RX LOW (X)
GSM900 RX
HIGH HIGH LOW (X)
GSM850 RX HIGH LOW LOW (X)
W1900 HIGH LOW LOW
W900(W850) LOW LOW HIGH
W2100 HIGH LOW HIGH
WCDMA Triple
VREG_SMPS_2.1V
C1070
0.1u
L1031
1n
WCDMA2100_RX_LNA_OUT
C1081
DNI
GND
FL1009
3
C1097 L1048
1575.42 MHz G3
1 4
IN OUT
3.9n 3.3n
G1 G2
2 5
L1051
L1050 C1099
PESD5V0F1BL
C1129 8.2n DNI
1n
for contacting to GND
R1017
GPS_MODE
12
C1110
6.8p
LGE Internal Use Only
C1001 2.2n
L1005
L1004
100n
0.5p
WCDMA_900_RTX
WCDMA_1900_RTX
WCDMA_2100_RTX
L1006
DNI
881.5MHz,942.5MHz L1008
FL1001
56n
C1019 1.2n
4 7
IN_881_5 OUT_881_5_1
44
PGND16 6
43 OUT_881_5_2
9
PGND15
42 L1009 1.2n OUT_942_5_1
1 8
PGND14
IN_942_5 OUT_942_5_2
41
PGND13
2 5
GND1 GND3
3 10
L1011 GND2 GND4
DNI
22 C1025
GND5
21
39n
GND4
U1002 20
GND3
19
GND2
18
FEM ANT
17
WCDMA3
16
WCDMA2
15
WCDMA1
GSM Quad
40
PGND12
39
PGND11
38
PGND10
C1037
DNI
1842.5MHz,1960MHz C1053
FL1002
DNI
4 7
IN_1842_5 OUT_1842_5_1
6
OUT_1842_5_2
9
OUT_1960_1
1 8
IN_1960 OUT_1960_2
2 5 GND
GND1 GND3
L1019 3 10
GND2 GND4
DNI
ANT_SEL3
LOW
LOW
MUST CHECK
HIGH
HIGH
HIGH
HIGH
LOW
LOW C1063
WCDMA_900_RTX
100p
LOW
L1024
DNI
WCDMA_2100_RTX
RX_WCDMA_2100_MIX_INM
L1034
2 3
0.5p
FL1006
1 G1 O1
IN C1075
G2 O2
DNI
5 4
RX_WCDMA_2100_MIX_INP
2140MHz
W1900 TX(1850 -1910 MHz)
L1041
WCDMA_1900_RTX
100p
L1043
DNI
LNA for the GPS
Near To LNA
C1100 L1053
R1013
DNI
12
4.7n VREG_RF_2.7V
C1104 C1105
18p 0.1u
GND VDD L1056
3 5
GPS_IN
S_D FIL_OUT
2 4 3.3n
U1007
C1107 C1108
DNI DNI
M7
TX_ON
RF_ON
C1
TCXO_RTR_19.2MHZ TCXO
M3
RTR6285_SSBI SBDT
C1004 100p A10
GSM_LB_TX LB_RF_OUT1
100p
C1005 B9
WCDMA_900_TX_OUT LB_RF_OUT2
A9
GSM_HB_TX HB_RF_OUT1
A8
C1008
WCDMA_1900_TX_OUT HB_RF_OUT2
C1011 A7
WCDMA_2100_TX_OUT
HB_RF_OUT3
C1012
N9
RX_WCDMA_900_P WPRXLBP
M9
RX_WCDMA_900_M
WPRXLBM
N10
RX_WCDMA_1900_P WPRXHBP
N11
GSM850_RX_M
RX_WCDMA_1900_M WPRXHBM
H13
WDRXLB
L1007
GSM(869-894 MHz)
18n
J12
WDRXHB1
J13
WDRXHB2
GSM850_RX_P
C13
GSM850_RX_P
GCELL_INP
B13
GSM850_RX_M
GCELL_INN
GSM900_RX_M
C12
GSM900_RX_P
EGSM_INP
B12
GSM900_RX_M
EGSM_INN
L1012
GSM(925-960 MHz) E13
DCS_RX_P
15n DCS_INP
D13
DCS_RX_M
DCS_INN
GSM900_RX_P E12
PCS_RX_P
GPCS_INP
D12
PCS_RX_M
Near To RTR GPCS_INN
G13
GPS_IN
GPS_IN
C1030 100p A12
PDET_IN
PDET_IN
A2
R1010 12K
TX_RBIAS
1%
Near To RTR
L1014
K13
5.6n WPRXSE1
L13
RX_WCDMA_2100 WPRXSE2
DCS_RX_M
L1016 DCS(1805-1880 MHz)
4.7n
WCDMA2100_RX_LNA_OUT
DCS_RX_P
PCS_RX_M
C1057 L1021 PCS(1930-1990 MHz)
8.2n
4.3n
PCS_RX_P
W850 TX(824 - 849 MHz)
W900 TX(880 - 915 MHz)
FL1003
L1023
6 1
ANT RX
100p L1026
3
TX
L1025 6.2n
2 9
5.6n
GND1 GND6
L1029
4 8 C1128
GND2 GND5
12n
5 7
0.5p
GND3 GND4
897.5MHz, 942.5MHz
PDET_IN
W2100 TX(1920 -1980 MHz)
FL1005
L1033
6 1
ANT RX
100p
3
TX
L1035
2 9 C1074
1.8n
GND1 GND6
DNI
4 8
GND2 GND5
5 7 L1038
GND3 GND4
1950MHz, 2140MHz 3n
C1082
0.75p
FL1008
L1042
6 1
ANT RX
100p
3
TX
L1044
2 9
10n C1092
GND1 GND6
4 8 DNI L1045
GND2 GND5
5 7 6.8n
GND3 GND4
VREG_RF_2.7V
1880,1960MHz
C1093
C1094 10n
10p
L1047
3.3n
C1101
22p
6 17
RFINM PGND
C1106
7 16
RFINH RFOUTM
U1006
10p
8 15
L1054
RFGNDM1 RFOUTH
2.7n
9 14
RFGNDM2 RFOUTL
C1112
22p
C1116 3p
L1058
9.1n
C1120
ANT_SEL2
22p
ANT_SEL0
- 164 -
C1002
150p
A4
TX_IP
B5
TX_IN C1003
B3
TX_QP
150p
B4
TX_QN
E1 C1006 10n
VTUNE1
N5 10n
C1007
VTUNE2
G1
C1009 1n
VTUNE_GPS
C1010
150p
J1
PRX_QP RX0_Q_P
J2
PRX_QN RX0_Q_M
K2
PRX_IP RX0_I_P
C1013
K1
RX0_I_M
PRX_IN
150p
L1
DRX_QP RX1_Q_P
L2
RX1_Q_M
DRX_QN
M1
DRX_IP RX1_I_P
M2
DRX_IN RX1_I_M
N2
NC C1020 C1021 C1022 C1023
U1001
A3 0.1u 0.1u 0.1u 0.1u
DAC_REF
DAC_IREF
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
C1039 C1040 C1041 C1042 C1043 C1044 C1045 C1046 C1047 C1048 C1049
0.1u 4.7u 0.1u 4.7u 0.1u 0.1u 4.7u 0.1u 0.1u 0.1u 0.1u
VREG_RF_2.7V_RTR
C1055 C1056
0.1u 4.7u
VREG_MSME_1.8V
C1058 C1059 C1060
0603
22p 100p 0.1u
+VPWR
W900
C1066 C1122
2.2u 1n
U1003
11
PGND
10 1
VCC2 VCC1
9 2 4
RFOUT RFIN
8 3
ISO NC
7 4
GND VMODE PA_R0
C1130 6 5
L1030
CPL VEN PA_ON0
2p
DNI
C1068 C1069
DNI 100p
R1014
68
+VPWR
9.5dB
C1124
C1123
W2100
2.2u 1n
U1004
11
PGND
10 1 FL1007
VCC2 VCC1
4
9 2
RFOUT RFIN OUT
8 3 G3
ISO NC
7 4
GND VMODE PA_R0 C1080
6 5
C1077 CPL VEN PA_ON1 DNI
0.5p
C1086 C1087 R1020
100p 100p
+VPWR
C1125 C1126
W1900
2.2u 1n
U1005
11
PGND
10 1 FL1010
VCC2 VCC1
9 2 4
RFOUT RFIN
49.9
8 3
ISO NC
7 4
R1011 PA_R0
GND VMODE
6 5
CPL VEN PA_ON2
L1052
DNI
C1102
C1103
DNI
100p
RX_WCDMA_900_M
2 3
FL1011
G1 O1
C1114 1 C1113 L1057
IN
G2 O2 942.5MHz DNI 18n
68
5 4
RX_WCDMA_900_P
RX_WCDMA_1900_M
2 3
FL1012
C1119 1 G1 O1 C1118 L1059
IN
G2 O2 6.8n DNI
36
5 4 1960MHz
RX_WCDMA_1900_P
7. CIRCUIT DIAGRAM
TX_I_P
TX_I_M
TX_Q_P
R1001
VREG_RF_2.7V_RTR
0
TX_Q_M
C1016
C1017 C1018
1n 0.1u 4.7u
VREG_RF_2.7V
VREG_SMPS_2.1V
C1027 C1028 C1029
0.1u 10u 4.7u
C1050 C1051 C1052
0.1u 0.1u 4.7u
W900
FL1004
1
OUT IN WCDMA_900_TX_OUT
G3 G2 G1
5 3 2 C1067
897.5 MHz DNI
R1019
DNI
W2100
1
IN WCDMA_2100_TX_OUT
G2 G1
5 3 2
1950MHz C1083
3.9n
DNI
W1900
1
OUT IN WCDMA_1900_TX_OUT
G3 G2 G1
5 3 2
L1049
DNI
RX_WCDMA_2100
C1109
DNI
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