4. TROUBLE SHOOTING
- 82 -
4.5.5. Check RF Rx Level
TP1
TP3
TP4
Bias1
TP2
33p
C154
2.2nH
L125
L123
33nH
3
O1
4
O2
B7827
FL100
2
G1
5
G2
1
IN
C155
8.2p
L122
3.9nH
3.9nH
L124
0
R123
33p
C161
C156
0.1u
ILNA_OUT
IMT_RX_M
IMT_RX_P
Test Point (RF Rx Level)
TP1
10nH
L100
C102
33p
18
19
GND6
12
RX_DCS1
RX_DCS2
13
16
RX_EGSM1
RX_EGSM2
17
14
RX_PCS1
RX_PCS2
15
TX_DCSPCS
3
TX_EGSM
1
8
UMTS
D1040
U100
7
ANT
2
CTRL1
4
CTRL2
CTRL3
11
20
CTRL4
GND1
5
6
GND2
GND3
9
10
GND4
GND5
ANT100
NA
C101
SW100
KMS-512
ANT
G1
G2
RF
ANT102
C100
6.8p
ANT_SEL2
ANT_SEL0
ANT_SEL1
(1%)
HDET
11K
R134
470p
C84
G2
G3
G4
G5
G6
G7
RX
TX
ACMD-7601
FL102
ANT
G1
R139
4.7K
12p
C193
0
R135
27p
C189
0.1u
C198
C82
3.9n
LMV225TLX
U105
B1
GND
OUT
B2
RFIN_EN
A1
VDD
A2
R138
3.3K
0.01u
C83
C81
10p
0
R131
R130
10K
100nH
L130
VDDRF3
42
SBDT
43
44
SBST
33
TCXO
25
UMTS_TUNE
VDDA1
7
24
VDDA2
26
VDDA3
VDDA4
27
32
VDDA5
VDDA6
34
36
VDDA7
VDDA8
45
VDDM
41
VDDRF1
3
12
VDDRF2
19
ILNA_IN
ILNA_OUT
14
8
IMIXM
IMIXP
9
28
LO_OUT
49
PGND
15
PLNA_BIAS
PLNA_IN
16
PLNA_OUT
13
10
PMIXM
PMIXP
11
RX_IM
21
20
RX_IP
23
RX_QM
RX_QP
22
46
R_BIAS
SBCK
2
29
CP_DUMP
CP_OUT
30
FAQ
31
GLNA_BIAS
48
47
GLNA_IN
1
GLNA_OUT
GMIXM
5
6
GMIXP
4
GND
GPS_TUNE
35
39
GRX_IM
40
GRX_IP
37
GRX_QM
GRX_QP
38
ILNA_BIAS
17
18
RFR6250E
U106
BLANK
5.6nH
L129
C188
100p
1.2p
C194
1200p
C190
C195
680p
0.1u
C85
C191
27p
2.7nH
L131
100p
C86
R137
0
C199
10p
0.1u
C80
R129 1.8K
VREG_RFRX_1_2.85V
ILNA_OUT
PA_ON
RX_IP
RX_IM
HDET1
VREG_RFTX_2.85V
RX_QP
RX_QM
TP4
TP2
TP3
Bias1
Содержание U890
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model U890 U890c Service Manual U890 U890c ...
Страница 3: ... 4 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 2 SIGNAL PATH ...
Страница 109: ...4 TROUBLE SHOOTING 110 CN600 50pin LCD connector CN901 C907 C911 FB901 FB902 ...
Страница 115: ...4 TROUBLE SHOOTING 116 C226 C227 for MIC serial capacitor ...
Страница 118: ...4 TROUBLE SHOOTING 119 Q400 Q401 Q402 VBATT GND ...
Страница 139: ...Table 2 1 1 RF Block Component 6 BLOCK DIAGRAM 140 ...
Страница 140: ...6 BLOCK DIAGRAM 141 6 2 Interface Diagram U890 Interface Diagram ...
Страница 142: ...6 BLOCK DIAGRAM 143 Top Side ...
Страница 143: ...6 BLOCK DIAGRAM 144 Bottom Side ...
Страница 152: ... 153 8 pcb layout ...
Страница 153: ... 154 8 pcb layout ...
Страница 154: ... 155 8 pcb layout ...
Страница 155: ... 156 8 pcb layout ...
Страница 156: ... 157 8 pcb layout ...
Страница 157: ... 158 8 pcb layout ...
Страница 163: ...9 CALIBRATION 164 9 3 HOT KIMCHI Example Choose_U890 ...
Страница 164: ...9 CALIBRATION 165 Click APPLY button Click START button ...
Страница 165: ...9 CALIBRATION 166 Click Run button to lunch RF AUTOTEST ...
Страница 167: ... 168 ...
Страница 191: ...Note ...
Страница 192: ...Note ...