4. TROUBLE SHOOTING
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4.6.2 Checking Ant. SW Module
Refer to chapter 4.4
4.6.3 Checking RF Tx level
TP1
TP2
TP3
Test Point (RF Tx Level)
R102
0
6.8nH
L119
R114
100
C117
10u
L118
NA
15p
10nH
L100
C148
15p
C149
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
C123
0.01u
ANT100
NA
C101
C116
33p
C122
0.01u
SW100
KMS-512
ANT
G1
G2
RF
C121
10u
6
GND1
7
GND2
GND3
8
9
GND4
GND5
10
12
GND6
GND7
13
14
GND8
16
GND9
GSM_IN
4
GSM_OUT
11
PGND
21
RSVD_GND
19
20
VAPC
VBATT
17
VCC1A
2
VCC1B
U102
SKY77328
1
BS
3
DCS_PCS_IN
DCS_PCS_OUT
15
18
ENABLE
5
C124
68p
0.01u
C118
ANT102
R115
100
15K
R105
C100
6.8p
ANT_SEL2
ANT_SEL0
ANT_SEL1
GSM_PA_RAMP
GSM_PA_EN
GSM_PA_BAND
+VPWR
Schematic of RF Tx Level
TP1
TP2
TP3
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 ...