4. TROUBLE SHOOTING
- 93 -
Checking RF Rx Block
EGSM
.RX
DCS
.RX
PCS
.RX
HIGH
LOW
LOW
HIGH
HIGH
1930-1990 MHz
GSM 900 Rx
GSM_PA_BAND
DCS / PCS
HIGH
LOW
(1%)
GSM
OFF
HIGH
HIGH
LOW
HIGH
(1%)
(PPS)
GSM 1800 Rx
WCDMA 2100
HIGH
HIGH
925-960 MHz
(1%)
HIGH
HIGH
WCDMA 800
LOW
GSM 1900 Rx
HIGH
MODE
LOW
1805-1880 MHz
LOW
L1017
12nH
R1003
10
1.2nH
L1012
820p
C1015
0.01u
C1017
8.2nH
L1018
100p
C1016
C1020
10n
C1036
0.01u
R1008
3300
L1008
2.2uH
1000p
C1034
5.6nH
L1007
0.1u
C1010
12nH
L1014
1000p
C1029
R1012
3.3K
5.6nH
L1004
2.2uH
L1001
L1009
1.2nH
L1024
8.2nH
VDDA5
15
VDDA6
23
26
VDDA7
VDDA8
27
VDDA9
31
VDD_M
43
8
VTUNE_REF
UMTS2100_OUT
51
55
UMTS800_OUT
49
VCONTROL
VCO_TUNE
9
4
VDDA1
36
VDDA10
VDDA11
39
41
VDDA12
48
VDDA13
VDDA14
50
52
VDDA15
54
VDDA16
VDDA17
56
VDDA2
5
VDDA3
7
10
VDDA4
13
RX_IP
12
RX_QN
RX_QP
11
32
RX_VCO_IN
33
R_BIAS
44
SBCK
45
SBDT
SBST
46
6
TCXO
TX_IN
19
TX_IP
18
TX_MOD_CP
40
17
TX_QN
TX_QP
16
42
TX_VCO_FB
UMTS1900_OUT
53
1
CP_HOLD1
29
CP_HOLD2
20
DAC_REF
FAQ1
3
FAQ2
28
57
GND_SLUG
GSM1800_INN
34
35
GSM1800_INP
GSM1900_INN
24
25
GSM1900_INP
21
GSM850_INN
22
GSM850_INP
GSM900_INN
38
37
GSM900_INP
RF_ON_TX_ON
47
RX_IN
14
RTR6250D
U1001
CP1
2
30
CP2
47nH
L1019
C1035
82p
22n
C1037
R1007
1.8K
1000p
C1008
L1020
1.2nH
L1022
47nH
C1011
33p
C1033
120p
1000p
C1022
R1011
82
C1013
33p
2.2uH
L1005
33p
C1012
47
R1014
R1010
11.3K
2.2uH
L1006
L1003
1.2nH
CP2_OUT
VREG_
RX_
RX_
RX_
RX_
UHF_LO_BUFF
RTR6250
VREG_RFTX_2.85V
Set the Phone Rx is ON
Check
soldering
Change the board
Resoldering
YES
NO
Check
FEM & buffer
YES
NO
Change FEM & buffer
Test Point (RF Rx Level)
Schematic of GSM/DCS/PCS Rx Block
PCS.RX
DCS.RX
EGSM.RX
Z3X-BOX.COM
Содержание L602i
Страница 3: ... 4 Z 3 X B O X C O M ...
Страница 34: ...3 TECHNICAL BRIEF 35 3 7 Hardware Architecture Figure Simplified Block Diagram Z 3 X B O X C O M ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram Z 3 X B O X C O M ...
Страница 71: ...4 TROUBLE SHOOTING 72 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH Z 3 X B O X C O M ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 5 5 Check RF Rx Level TP1 TP3 TP4 Bias1 TP2 Z 3 X B O X C O M ...
Страница 101: ...4 TROUBLE SHOOTING 102 LCD Control data flow Z 3 X B O X C O M ...
Страница 109: ...4 TROUBLE SHOOTING 110 AUDIO AMP R502 C501 R503 FP500 501 CN600 PIN 14 15 Speaker Soldering Point Z 3 X B O X C O M ...
Страница 113: ...4 TROUBLE SHOOTING 114 Z 3 X B O X C O M ...
Страница 126: ...5 DOWNLOAD 127 Download of Module image in progress Download process has completed successfully Z 3 X B O X C O M ...
Страница 130: ...5 DOWNLOAD 131 Click on X button to use another function Z 3 X B O X C O M ...
Страница 134: ...6 BLOCK DIAGRAM 135 Table 2 1 1 RF Block Component Z 3 X B O X C O M ...
Страница 137: ...6 BLOCK DIAGRAM 138 Top Side Z 3 X B O X C O M ...
Страница 138: ...6 BLOCK DIAGRAM 139 Bottom Side Z 3 X B O X C O M ...
Страница 139: ... 140 Z 3 X B O X C O M ...
Страница 149: ... 150 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 150: ... 151 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 151: ... 152 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 152: ... 153 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 153: ... 154 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 154: ... 155 LGMC 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 155: ... 156 8 PCB LAYOUT Z 3 X B O X C O M ...
Страница 161: ... 162 Z 3 X B O X C O M ...
Страница 163: ... 164 Z 3 X B O X C O M ...
Страница 191: ...Note Z 3 X B O X C O M ...
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