Table of Contents
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Flow Chart of Troubleshooting and Circuit Diagrams
SBCK
SBDT
SBST
RF_ON_TX_ON
R606
TX_AGC_ADJ
UMTS_TXRF
V_2.85TX
C625
V_2.85OSC
L603
C632
VCO_TUNE
UMTS_RX_TUNE
UMTS_RX_VCO_IN
V_2.85TX
C608
V_2.7P
R604
C614
C646
43
42
41
40
44
SBCK
45
SBDT
46
SBST
47
RF_ON
48
VDDA13
49
VCONTROL
50
VDDA14
51
UMTS2100_OUT
52
VDDA15
C621
53
UMTS1900_OUT
54
VDDA16
55
UMTS800_OUT
56
VDDA17
57
GND
C626
58
NC1
59
NC2
1
2
3
4
C631
C633
R613
C637
R616
C638
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C609
C604
39
38
37
36
35
34
33
32
31
30
29
VDDA8
VDDA7
GSM1900_INP
GSM1900_INN
U601
VDDA6
GSM850_INP
GSM850_INN
DAC_REF
TX_QN
TX_QP
5
6
7
8
9
10
11
12
13
14
15
C630
C641
R620
C639
9-31
C603
R602
V_2.85OSC
R605
L600
C615
C616
10nF
6.3V
(0603)
28
V_2.85TX
FAQ2
27
26
25
PCS_RXP
24
PCS_RXN
23
22
21
20
DAC_REF
L604
19
TX_IN
L605
18
TX_IP
17
L606
16
L607
V_2.85TX
L602
C645
C620
TX_IM
C623
TX_IP
TX_QM
C624
TX_QP
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