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SGH-E770 Flow Chart of Troubleshooting
C127
C128
PAC_EN
BAND_SEL
DCS74945_OUT
GSM74945_OUT
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VBAT
C100
43
42
41
40
39
44
GND26
45
PAC_EN
46
BANDSEL
47
VCCA
48
GND27
49
GND28
50
GND29
51
DCS_IN
52
GND30
53
GSM_IN
54
GND31
55
GND32
56
GND33
57
GND
1
2
3
4
5
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38
37
36
35
34
33
32
31
30
29
CLK
LE
DATA
IF_OUT-
IF_OUT+
V_IF1
PAM101
LO_IN
V_RF
GND17
DCS_OUT
GND16
GND15
GND14
6
7
8
9
10
11 12 13 14
15
VRF_2.9V
VRF_2.9V
C117
C118
C121
R111
28
SERCLK
27
SERLE
26
SERDAT
25
IF_OUT-
24
IF_OUT+
23
L107
22
LO
21
20
R114
19
DPCS_OUT
18
17
C135
C136
16
R115
GSM_OUT
C137
C138
VAPC
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