Table of Contents
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V_2.6P
SBCK
SBDT
SBST
RF_ON_TX_ON
R115
TX_AGC_ADJ
UMTS_TXRF
V_2.85TX
C140
V_2.85OSC
L118
C142
C145
VCO_TUNE
UMTS_RX_TUNE
UMTS_RX_VCO_IN
V_2.85TX
C126
R110
C127
43
42
41
40
39
44
SBCK
45
SBDT
46
SBST
47
RF_ON
48
VDDA13
49
VCONTROL
50
VDDA14
51
UMTS2100_OUT
52
VDDA15
53
C136
UMTS1900_OUT
54
VDDA16
55
UMTS800_OUT
56
VDDA17
57
GND
C141
58
NC1
59
NC2
1
2
3
4
C144
R120
C147
R121
C148
R122
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Flow Chart of Troubleshooting and Circuit Diagrams
C121
C122
38
37
36
35
34
33
32
31
30
29
VDDA8
VDDA7
GSM1900_INP
GSM1900_INN
VDDA6
GSM850_INP
U100
GSM850_INN
DAC_REF
TX_IN
TX_IP
TX_QN
TX_QP
5
6
7
8
9
10
11
12
13
14
15
C143
C149
C153
3-42
C120
R105
V_2.85OSC
R107
L113
C128
C130
28
V_2.85TX
FAQ2
27
26
25
PCS_RXP
24
PCS_RXN
23
22
21
20
DAC_REF
L114
19
18
L115
L116
17
16
L117
V_2.85TX
L119
C150
C133
TX_IM
C137
TX_IP
TX_QM
C139
TX_QP
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