
- 139 -
LGMC
PCS
5
E
F
A
ANT_SEL0
3
LOW
2
TCXO
VTUNE-Connected directly to GND
C
D
GSM/EDGE
ANT_SEL1
DCS
C
D
6
GSM 850/GSM 900 TX/ WCDMA
LOW
4
HIGH
D
9
14
E
WCDMA
8.5dB
13dB
8
C
HIGH
LOW
MODE
LG(42)-A-5505-10:01
20dB
LOW
16
1
GSM
E
1
7dB
GSM 1800/GSM 1900 RX
2
GSM 850/ GSM 900 RX
E
F
C
15
LOW
A
4
GSM_PA_BAND
5
HIGH
B
7
D
F
EGSM
(1%)
HIGH
B
HIGH
DCS/PCS
LG Electronics Inc.
(1%)
GSM 1800/GSM 1900 TX
C124
22p
R108
15K
C142
91
R111
12p
68p
C121
U103
CP0402A1950DNTR
50OHM
4
3
COUP
2
IN
1
OUT
100p
C150
2
45
31
KRX102U
TR100
2.7nH
L114
L115
5.6nH
R123
100ohm
C199
NA
130
R121
GSM1900_RX2
GSM900_RX1
5
6
GSM900_RX2
16
GSM900_TX
VDD
19
WCDMA2100
9
18
CTRL2
22
7
GND1
GND10
23
GND2
8
GND3
10
GND4
12
GND5
13
15
GND6
17
GND7
GND8
20
GND9
21
14
GSM18001900_TX
GSM1800_RX1
1
GSM1800_RX2
2
GSM1900_RX1
3
4
D5011
U100
ANT
11
CTRL1
NA
L118
C164
3.3nH
C123
15p
C143
0.1u
100p
C154
10nH
L121
C135
FL102
ACMD-7602
ANT
3
PGND
4
1
RX
TX
2
0.1u
NA
C160
2
G1
3
G2
5
G3
1
IN
4
O1
FL101
EFCH1950TDF1
L113
1.5nH
10p
C168
C163
1.2nH
10p
100p
C167
C113
C136
33p
33p
C131
22p
C139
33p
C107
C104
0.1u
3.9nH
C137
0.1u
C147
EFCH2140TDE1
FL103
G1
2
G2
5
IN
1
O1
3
O2
4
L110
10nH
2.7nH
C119
C149
22p
C112
33p
3.3p
6
VCC1B
C162
EGSM_OUT
11
ENABLE
18
GND1
5
GND2
7
8
GND3
9
GND4
10
GND5
GND6
12
GND7
13
GND8
14
GND9
16
21
P_GND
19
RSVD_GND
VAPC
20
17
VBATT
2
VCC1A
SKY77318
U102
BS
1
DCS_PCS_IN
3
15
DCS_PCS_OUT
EGSM_IN
4
0.5p
R119
51
L119
L122
1.8nH
L100
3.3nH
0.01u
C175
C166
1.2nH
10
R112
0.1uF
C169
R109
120
C148
22u
0
R443
C172
100p
0.01u
C158
C125
2p
C118
1000p
3300p
C117
C133
NA
L124
0.1u
C151
1000p
L116
2.2p
56p
180p
C105
22p
C100
C145
L107
15nH
1u
C435
100ohm
R115
2
G1
3
G2
5
G3
1
IN
4
O1
51
R113
4
VCC
5
EFCH897MTDB1
FL100
TC7SH04FU
U105
GND
3
2
33p
C155
8.2p
68p
C108
C115
680
R103
C120
68p
0.01u
C141
C114
180p
47
R120
0.01u
C171
22u
C129
C127
0.01u
L101
0.01u
C159
NA
ANT103
1000p
GND1
3
GND2
4
5
GND3
6
GND4
IN
1
2
OUT
C170
VDDA9
VDDM
17
VTUNE1
5
18
VTUNE2
26
WLNA_IN
29
WLNA_OUT
35
WMIX_INN
WMIX_INP
34
SW100
MM8430-2600RB3
TX_QN
TX_QP
53
VCONTROL
56
4
VDDA1
VDDA10
41
VDDA11
45
VDDA12
47
48
VDDA13
VDDA14
49
6
VDDA2
VDDA3
8
9
VDDA4
VDDA5
15
16
VDDA6
19
VDDA7
VDDA8
20
28
LB_RF_OUT1
LB_RF_OUT2
42
PGND
57
40
PWD_DET_IN
24
RF_ON
13
RX_IN
12
RX_IP
RX_QN
11
10
RX_QP
R_BIAS1
3
R_BIAS2
27
SBDT
14
7
TCXO
21
TEST
TX_IN
50
TX_IP
51
52
CAL_INP
54
DAC_REF
DCS_INN
39
38
DCS_INP
EGSM_INN
33
32
EGSM_INP
1
ENV_LNN
ENV_LNP
2
55
ENV_OUT
GCELL_INN
30
GCELL_INP
31
25
GND
GPCS_INN
37
36
GPCS_INP
HB_RF_OUT1
46
HB_RF_OUT2
44
43
RTR6275
U101
CAL_INN
23
22
91
NA
C122
R110
1000p
C173
0.01u
C140
180p
C103
100nH
L102
C152
22p
C110
180p
15nH
L104
C156
4.7u
C161
2.2p
R122
130
C146
100p
R116
100ohm
47p
L123
2.7nH
C111
22p
C144
ANT101
33p
C130
C165
10nH
C109
6p
NC1
5
6
NC2
NC3
7
8
NC4
3
OUTPUT
4
VCC
1
VCONT
ANT102
DSA321SCE-19.2M
X100
19.2MHz
GND
2
12K
R102
R124
100K
100p
3
GND2
6
7
GND3
9
GND4
RFIN
2
RFOUT
8
1
VCC1
VCC2
10
4
VCONT
5
VREF
C157
WS2512_TR1G
U104
11
BGND
GND1
C101
1.2p
C153
0.01u
L109
NA
33u
C174
1000p
C126
VDD_RX
VREG_SYNTH_2.6V
VREG_RF_SMPS
VREG_RF_SMPS
VREG_MSMP_2.7V
+VPWR
ANT_SEL0
VDD_RX
GSM_PA_RAMP
GSM_PA_EN
GSM_PA_BAND
TRK_LO_ADJ
VREG_TCXO_2.85V
TCXO_BT
VREG_BT_2.85V
TCXO_PM
RTR6275_TCXO
+VPWR
+VPWR
PA_R0
PA_ON
VREG_TCXO_2.85V
TX_QM
TX_QP
TX_AGC_ADJ
DCS_PCS_TX
GSM_TX
PWR_DET
DAC_REF
PWR_DET
TX_ON
RX_IM
RX_IP
RX_QM
RX_QP
SSBDT_RTR
RTR6275_TCXO
TX_IM
TX_IP
ANT_SEL1
VREG_RF_SMPS
DCS_PCS_TX
GSM_TX
7. CIRCUIT DIAGRAM
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Содержание U370
Страница 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...
Страница 137: ... 138 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 147: ... 148 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 159: ... 160 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 178: ...Note ...
Страница 179: ...Note ...