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Flow Chart of Troubleshooting
7-16
C911
35
VCC2GSM
2
VCC3DCS/PCS
2118
VCC3GSM
VCCOUT
19
VCCOUT
20
VRAMP
45
12
NC
13
NC
14
TXENABLE
41
VBATT
4243
VBATT
VCC1DCS/PCS
39
VCC1GSM
46
VCC2DCS/PCS
33
NC
38
NC
36 44
NC
NC
8
NC
91 0
NC
NC
11
NC
23
NC
24
NC
25
NC
26
NC
27
NC
28
NC
3
NC
29
NC
51
GSM850/900IN
48
GSM850/900OUT
6
NC
1
NC
15
NC
16
NC
17 22
NC
NC
47
GND
5
7
GND
GND
30
GND
32
GND
34
49
GND
50
GND
GND
BANDSEL
40
DCS/PCSIN
37
DCS/PCSOUT
31
GND
4
GND
52
GND
53
GND
54
GND1GSM
U900
C904
31
0VC1
VC2 4
2VC3
5
DCS/PCS_TX
G
68
GG
12
G
1314
G
11
GSM850/900_RX
GSM850/900_TX
7
PCS_RX
F900
ANT
9
1
DCS_RX
C902
C901
VBAT
C906
C909
L904
R902
C910
ANT900
R901
L903
A
23
CG
1
G
4
CON901
C903
C907
C905
C908
C912 C913 C914 C915
ANT901
C916
L902
L901
R903
GSM_TX_EN
PCS_RX_EN
PCSRX
TX_BAND_SEL
TXPOWER
EGSMRX
DCSRX
DCS_TX_EN
TX_EN
DCS_PAM_IN
GSM_PAM_IN
J_ANT
