- 150 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
REV.1.1
Rev. F
REV.1.1
27p
C122
G1
G2
C121
22nH
SW101
KMS-518
A
C
DNI
smd_0603h_25_r_na
R106
34
PGND4
RSVD
10
RX1
16
15
RX2
RX3
14
13
RX4
4
VAPC
VBATT
5
WCDMA1
18
19
WCDMA2
WCDMA3
20
_TXEN
8
29
GND12
GND13
30
11
GND2
GND3
12
21
GND4
GND5
22
23
GND6
GND7
24
25
GND8
GND9
26
1
HB_RF_IN
LB_RF_IN
3
9
MODE
31
PGND1
32
PGND2
PGND3
33
SKY77521
U102
17
ANT
BS1
7
6
BS2
2
GND1
27
GND10
GND11
28
C115
R105
22p
DNI
R180
51
NA
L103
R104
0
0ohm_0603_case1
R109
DNI
8.2p
C116
R107
1.5nH
GRX_900
GRX_1800
GRX_1900
WRF_BAND_2
GTX_VAM
GRX_850
WRF_BAND_5
Rev. B
Rev. 1.1
Rev. 1.1
Rev. F
68
R111
1.2p
C110
TP101
0.1u
C119
22p
C103
C113
22p
R112
68
5
VEN_BAND_2
1
7
VEN_BAND_5
SKY77175
U103
3
GND1
GND2
8
GND3
12
14
GND4
IN_BAND_2
2
6
IN_BAND_5
13
OUT_BAND_2
OUT_BAND_5
9
PGND
15
10
VBIAS
VC2
11
4
VCC1
VCONT
22p
C120
C101
5.6nH
DAP
7
4
EN
GND
3
OUT
6
5
REF
2
RF_IN
VDD
1
U105
LMV221
C104
0.1u
LDC151G8820Q-359
U101
3
CO
U
IN
2
1
OUT
4
TER
18p
R102
L102
12p
200
R110
VDDA_2V8
R103
51
33nF
C123
OUT
1
4
TER
LDC15836M20Q-360
U104
3
COU
IN
2
1K
R108
1000p
C102
VBAT
1.5nH
L101
TP102
R101
33p
470p
C112
C108
C114
22p
15nH
C118
DNI
FL102
ANT
GND1
GND2
GND3
GND4
GND5
GND6
RX
TX
CEG231G88DCB000
GND1
GND2
IN
OUT
B7638
IS101
C111
22p
ACMD-7403
FL101
ANT
G1
RX
TX
8.2nH
C117
DNI
IS102
CEG23836MDCB000
GND1
GND2
IN
OUT
C109
WPOW_DET_EN
WRX_BAND_2
WRX_BAND_5
BIAS_CTRL
WRF_BAND_5
WRF_BAND_2
WPOW_DET
VCC_WPA
WTX_BAND_2_TO_PA
WTX_BAND_5_TO_PA
WTX_BAND_2_EN
WTX_BAND_5_EN
G1
2
G2
3
5
GND
IN
1
4
OUT
FL105
SAFEB836MAL0F00
R148
DNI
R137
DNI
6.8p
R150
R145
51
R142
560
L119
NA
L116
NA
5.6nH
R149
L117
39nH
33p
C153
0
R146
L115
NA
SAFEA1G88KB7F00
FL106
2
G1
5
G2
3
G3
1
IN
OUT
4
0
R147
51
R153
WTXHB1
29
WTXHB2
33
WTXHB3
31
35
WTXLB
57
PGND
37
RFCTRL1
RFCTRL2
36
32
GND15
34
GND16
DNI
C157
C156
DNI
5.6nH
R151
WTX_BAND_2_TO_PA
TX_ADC_STRB_2V8
WTX_BAND_5_TO_PA
WDCDC_EN
TP10
R101
Duplexer Output
TP09
C116
Duplexer Output
TP12
C122
FEM Output
TP11
SW101
RF test connector
Duplexer Output
Duplexer Output
TP06
FL101
Duplexer Input
TP08
IS101
Isolator Input
TP05
FL102
Duplexer Input
TP07
IS102
Isolator Input
PAM Output
PAM Output
TP16_RF
R149
PAM Input
TP02
R146
Saw Input
TP04
R147
Saw Output
TP01
R149
Saw Input
TP03
R150
Saw Output
PAM Input
PAM Input
RF3300
Содержание TU750
Страница 1: ...Service Manual Model TU750 Internal Use Only Service Manual TU750 Date January 2009 Issue 1 0 ...
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