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7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C1022
0.5p
1K
R1024
1K
R1022
R1025 1K
ANT1001
ANTPAD_GD880
FEED
3.9n
L1005
C1015
DNI
100p
C4
C3
DNI
DNI
C2
2.2n
L1012
27p
86
01
C
3.9p
C1055
3.9p
C1029
C1057 100p
SW1001
G1
G2
ANT
G3
L
K
J
I
H
G
F
E
D
C
B
A
12
11
10
9
8
7
6
5
4
3
2
1
LGE Internal Use Only
L
K
J
I
H
G
F
E
D
C
B
A
12
11
10
9
8
7
6
5
4
3
2
1
U1001
3
2
5
4
1
NI
_F
R
FIL_OUT
VDD
S_D
GND
C1002
0.1u
DNI
C1003
6.8n
L1001
0
R1001
C1004
DNI
VREG_RF_2.7V
DNI
R1002
30
01
R
180
15n
L1002
05
01
C
33p
C1087
10n
1K
R1023
4.7u
C1026
C1049
68p
22p
C1007
3.9n
L1020
C1038
0.5p
1.8p
C1010
C1011
39p
C1012
2.7p
C1104
DNI
C1077
68p
VREG_SMPS_2.1V
C1014
1n
2.2
R1005
33p
C6
L1006
2.2n
L1004
1.2n
DNI
C1017
C1018
0.1u
R1006
5.1
C1019
0.1u
12n
L1021
C1021
1n
3.9n
L1017
C1023
22p
42
01
C
u1
.0
C1025
22p
0.75p
C1009
100p
C1027
U1002
51
8
7
9
6
10
5
11
4
12
3
13
2
14
1
RFIN_LOW
RFOUT_LOW
VMODE
GND3
VBP
VCC2
VCC1
GND2
VEN_LOW
RFOUT_HI
VEN_HI
GND1
RFIN_HI
CPL
D
N
G
P
3.6n
L1009
4.7n
L1024
C1031
0.1u
0.5p
C1063
C1056
68p
70
01
R
120
33p
C1034
C1035
22p
FL1001
1575.42MHz
5
3
2
4
1
OUT
IN
G1
G2
G3
5.1
R1008
22p
C1036
VREG_SMPS_2.1V
2.7p
C1037
FL1002
897.5 MHz,942.5 MHz
9
5
8
4
7
2
3
6
1
RX1
ANT
TX
GND1
GND4
GND2
RX2
GND3
GND6
L1022
12n
1K
R1009
33p
C1040
U1003
3
2
9
2
8
2
5
3
4
3
9
6
62
61
60
54
43
36
37
38
27
68
25
52
21
42
8
7
45
1
44
53
47
22
46
10
6
49
4
48
3
51
67
50
19
39
40
18
17
41
16
15
33
32
13
31
14
30
12
11
59
58
9
56
24
5
57
55
65
66
20
63
2
64
26
RF_ON
TX_IP
TCXO
TX_IN
SBDT
TX_QP
TX_QN
LB_RF_OUT1
LB_RF_OUT2
VTUNE1
VTUNE2
HB_RF_OUT1
VTUNE_GPS
HB_RF_OUT2
HB_RF_OUT3
PRX_QP
PRX_QN
WPRXLBP
PRX_IP
WPRXLBN
PRX_IN
WPRXHBP
WPRXHBN
DRX_QP
DRX_QN
WDRXLB
DRX_IP
DRX_IN
WDRXHB1
WDRXHB2
NC
GCELL_INP
DAC_IREF
GCELL_INN
VDDA1_1
EGSM_INP
VDDA1_2
EGSM_INN
VDDA1_3
VDDA1_4
DCS_INP
VDDA1_5
DCS_INN
VDDA1_6
GPCS_INP
VDDA2_1
GPCS_INN
VDDA2_2
VDDA2_3
GPS_IN
VDDA2_4
PDET_IN
VDDA2_5
TX_RBIAS
VDDA2_6
WPRXSE1
VDDA2_7
WPRXSE2
VDDA2_8
VDDA2_9
VDDA2_10
VDDA2_11
VDDA2_12
D
N
G
P
T
U
O_
2
E
S
X
R
P
W
T
U
O_
1
E
S
X
R
P
W
P
NI
_
X
M_
B
W
M
NI
_
X
M_
B
W
M
D
D
V
51p
C1041
01
01
R
91
DNI
C1042
C1043
33p
R1011
51
C1044
DNI
0.1u
C1045
C1046
100p
U1004
23
22
24
21
25
20
26
19
27
18
28
17
9
8
10
7
11
6
12
5
13
4
14
3
15
2
16
1
DCS_PCS_IN
DCS_PCS_OUT
BS
GND6
TX_EN
GND5
VBATT
VCC_OUT
VAPC
GND4
NC
GND3
GND1
GND2
GSM_IN
GSM_OUT
PGND1
PGND12
PGND2
PGND11
PGND3
PGND10
PGND4
PGND9
PGND5
PGND8
PGND6
PGND7
2.2n
L1013
C1048
100p
15p
C1100
2.2p
C1051
10n
C1052
10
R1012
1n
C1053
L1007
3.6n
4.7u
C1069
VREG_SYNTH_2.75V
100p
C5
L1026
15n
C1060
22p
L1011
15n
R1013
12K
22p
C1061
10K
R1014
FL1003
1950MHz,2140MHz
7
5
8
4
9
2
3
1
6
ANT
RX
TX
GND1
GND6
GND2
GND5
GND3
GND4
C1062
10u
51
01
R
120
C1039
4.7p
C1064
0.1u
100p
C1066
76
01
C
p0
01
61
01
R
91
1.2n
L1003
18n
L1019
07
01
C
u1
.0
17
01
C
u1
.0
71
01
R
180
C1073
10u
VREG_RF_2.7V
R1018
2.2K
L1008
15n
100p
C1075
C1076
0.1u
2.7n
L1023
2.7n
L1010
2140MHz
FL1004
5
2
4
3
1
IN
OUT
_OUT
G1 G3
FL1005
1950MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
C1081
0.1u
100p
C1082
52
01
L
1.2n
82
R1020
C1084
39p
+VPWR
58
01
C
u1
.0
1.8p
C1086
C1090
100p
L1014
10n
C1092
0.1u
+VPWR
C1093
4.7p
2.2p
C1094
30
R1021
0.1u
C1096
C1008
4.7u
C1097
0.1u
1n
C1098
FL1006
897.5MHz
5
3
2
4
1
IN
OUT
G1
G2
G3
68p
C1028
C1101
4.7u
C1102
0.1u
VREG_MSMP_2.6V
100p
C1103
12n
L1015
19
01
C 3.3p
C1106
DNI
DNI
C1108
C1109
3.9p
DNI
C1110
2.7n
L1016
C1111
DNI
FL1007
850,1900,2100MHz
6
5
4
3
7
11
9
22
21
20
13
24
12
23
10
15
8
14
1
17
16
2
19
18
PCS_RX1
PCS_RX2
ANT
PCN_RX1
PCN_RX2
GND1
EGSM_RX1
GND2
EGSM_RX2
GND3
GND4
GSM850_RX1
GND5
GSM850_RX2
WCDMA_2100
WCDMA_850
WCDMA_1900
PCN_PCS_TX
GSM850_EGSM_TX
D
D
V
1L
RT
C
2L
RT
C
3L
RT
C
4L
RT
C
22p
C1112
GND
SW1002
G4
G3
IN
OUT
G1
G2
2.2n
C1113
VREG_MSMA_2.6V
22p
C1114
68p
C1080
12
R1026
ANT1002
ANTPAD_GD880
FEED
59
01
C 3.3p
1.5n
L1018
GPS_LNA_EN
RTR_DRXQP
RTR_DRXQM
RTR_DRXIM
RTR_DRXIP
RTR_RXQP
RTR_RXQM
RTR_RXIM
RTR_RXIP
RTR_TXQM
RTR_TXQP
RTR_TXIM
RTR_TXIP
RTR_DAC_REF
TCXO_RTR_19.2MHZ
ANT_SEL3
GSM_PA_RAMP
GSM_PA_BAND
GSM_PA_EN
ANT_SEL2
ANT_SEL1
W_PA_R0
RTR_TX_ON
W_2100_PA_ON
W_PA_R1
RTR_SSBI
W_900_PA_ON
RX_WCDMA_2100_LNA_OUT
RX_WCDMA_2100_LNA_OUT
WB2100_MIX_INP
WB2100_MIX_INP
WB2100_MIX_INM
WB2100_MIX_INM
RX_PCS_P
RX_PCS_P
RX_PCS_M
RX_PCS_M
RX_DCS_P
RX_DCS_P
RX_DCS_M
RX_DCS_M
RX_GSM_900_P
RX_GSM_900_P
RX_GSM_900_M
RX_GSM_900_M
RX_GSM_850_P
RX_GSM_850_P
RX_GSM_850_M
RX_GSM_850_M
WCDMA_900_TX_OUT
WCDMA_900_TX_OUT
RX_WCDMA_2100
RX_WCDMA_2100
RX_WCDMA_900_M
RX_WCDMA_900_M
PDET_IN
PDET_IN
GPS_IN
GPS_IN
RX_WCDMA_900_P
RX_WCDMA_900_P
DCS_PCS_TX
DCS_PCS_TX
GSM_TX
GSM_TX
ANT_SEL0
WCDMA_2100_TX_OUT
WCDMA_2100_TX_OUT
PCS1900(1850-1910 MHz)
W2100 RX(2110 - 2170 MHz)
LOW
SFSY0035101
VDDA1 : Pin 3,4,6,10,22,53 = +2.7V VDC
W900 RX(925 - 960 MHz)
2mm
HIGH
HIGH
LOW
LNA for the GPS
HIGH
HIGH
BAND1(2520):SAYP1G95AA0B00
LOW
SDMY0002801
LOW
W2100 RX(2110 - 2170 MHz)
LOW
LOW
HIGH
LOW
GSM(925-960 MHz)
SMZY0016501
HIGH
5dB
LOW
LOW
HIGH
BAND1: SFSY0035001
Near to RTR6285
LOW
(WCDMA_1900)
LOW
Band 1
W900 TX(880 - 915 MHz)
LOW
LOW
LOW
LOW
LOW
ANTENNA SWITCH MODULE LOGIC
DCS/PCS TX
HIGH
BAND5 : B9425 ( SFSY0036501)
GSM900(880-915 MHz)
LOW
BAND 5/8
BAND2 : B9640 (SFSY0036601)
ANT_SEL0
ANT_SEL2
(WCDMA_1900)
WCDMA RX 2100 LNA Circuit
PCS(1930-1990 MHz)
BAND8(2520) : B7953 (SDMY0002801)
LOW
SFSY0036501
WCDMA 2100 (UMTS2)
LOW
GSM850/EGSM TX
HIGH
DCS1800 RX
WCDMA 900 (UMTS1)
GSM850 RX
HIGH
BAND8 : B9442 (SFSY0037601)
BAND1 : B9414 (SFSY0035101)
HIGH
GSM850(824-849 MHz)
1%
SDMY0001901
WCDMA
DCS1800(1710-1785 MHz)
+2.1V
GSM
LOW
LOW
ANT_SEL3
BAND1 : B9411 (SFSY0035001)
BAND2 : B9419 (SFSY0034901)
GSM(869-894 MHz)
ANT_SEL1
BAND2(2520) : ACMD-7407
DCS(1805-1880 MHz)
EGSM RX
PCS1900 RX
SMPY0019101
Band 8
10
04
43
0
Y
S
U
E
BAND 1/2
+2.7V
W2100 TX(1920 - 1980 MHz)
Route together
VDDA2 : Pin 1,7,8,21,25,27,37,43,54,60,61,62 = +2.1V VDC
8dB
Содержание GD88O
Страница 1: ...Service Manual Model GD880 Internal Use Only Service Manual GD880 Date March 2010 Issue 1 0 ...
Страница 183: ... 184 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 199: ... 200 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 217: ... 218 LGE Internal Use Only Copyright 2010 LG Electronics Inc All right reserved Only for training and service purposes ...