4. TROUBLE SHOOTING
- 82 -
4.5.1 Checking VCXO Block
Refer to 4.3
4.5.2 Checking Ant. SW module
Refer to 4.4
4.5.3 Checking RF TX Level
TP1
TP2
TP3
TP4
Test Point (RF TX Level)
HDET
WCDMA
C1032
0.01u
NA
C1114
0
R1031
C1028
0.01u
2
G1
5
G2
3
G3
1
IN
OUT
4
EFCH1950TDC1
FL1002
L1002
5.6nH
27p
C1007
100p
C1041
100p
C1036
3
VDDRF1
VDDRF2
12
15
16
13
PLNA_OUT
PMIXM
10
11
PMIXP
7
VDDA1
1
5
GMIXM
GMIXP
6
GND
4
14
ILNA_OUT
IMIXM
8
9
IMIXP
PGND
49
PLNA_BIAS
2
BLANK
48
GLNA_BIAS
GLNA_IN
47
GLNA_OUT
R1015
0
0.1u
C1029
TX
FL1000
ACMD-7601
ANT
G1
G2
G3
G4
G5
G6
G7
RX
C1001
27p
U1001 LMV225TLX
GND
B1
B2
OUT
A1
RFIN_EN
A2
VDD
C1031
100p
C1034
NA
1.8K
R1013
100p
C1025
8.2nH
L1013
R1001
0
C1215
12p
10K
R1012
5.6p
C1082
8.2nH
L1003
C1030
1200p
C1026
10u
1
TR1000
UMC4N
2
45
3
C1027
100p
270
R1011
C1037
0.01u
C1113
12p
VCC1B
7
VCC2A
13
VCC2B
9
6
VCONT
VREF
5
SKY77410
BGND
17
2
GND1
4
GND2
8
GND3
10
GND4
12
GND5
14
GND6
NC
1
RF_IN
3
RF_OUT
11
16
VBIAS
VCC1A
15
C1038
U1002
0.1u
VREG_W_PA
VREG_TCXO_RFR
ILNA_OUT
PA_ON
PA_ON
VREG_RFTX_2.85V
IMT_RX_P
IMT_RX_M
+VPWR
TX_AGC_ADJ
HDET1
VREG_RFTX_2.85V
4.7nH
L1035
15nH
L1034
KMS-512
SW1002
ANT
G1
G2
RF
GND6
RX_DCS1
12
13
RX_DCS2
RX_EGSM1
16
17
RX_EGSM2
RX_PCS1
14
15
RX_PCS2
3
TX_DCSPCS
1
TX_EGSM
UMTS
8
ANT
7
CTRL1
2
CTRL2
4
11
CTRL3
CTRL4
20
5
GND1
GND2
6
GND3
9
GND4
10
GND5
18
19
U1006
M054E
0.1u
C1108
33p
C1111
15p
C1230
ANT1000
0.5p
C1112
ANT1001
7.5nH
L1031
12
B2
11
B3
10
BGND
15
7
GND1
GND2
8
T__R
6
1
VCCA
14
VCCB
9
_OE
FXL4T245BQX
U1008
2
A0
3
A1
4
A2
A3
5
13
B0
B1
VREG_RFRX_0_2.85V
ANT_SEL2
ANT_SEL1
ANT_SEL0
TP1
TP2
TP3
TP4
Summary of Contents for U8500
Page 1: ...Date February 2006 Issue 1 0 Service Manual Model U8500 Service Manual U8500 ...
Page 20: ...3 TECHNICAL BRIEF 21 ...
Page 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Page 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Page 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Page 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Page 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Page 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Page 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U8500 Interface Diagram ...
Page 145: ... 146 ...
Page 154: ... 155 U8500 8 PCB LAYOUT ...
Page 155: ... 156 8 PCB LAYOUT U8500 ...
Page 156: ... 157 8 PCB LAYOUT ...
Page 157: ... 158 8 PCB LAYOUT ...
Page 158: ... 159 U8500 8 PCB LAYOUT ...
Page 159: ... 160 U8500 8 PCB LAYOUT ...
Page 166: ...9 CALIBRATION 167 Click START button U8500 U8500_ver1 1 U8500 U8500 Click U8500 ...
Page 167: ... 168 ...
Page 169: ... 170 ...
Page 194: ...Note ...
Page 195: ...Note ...