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Flow Chart of Troubleshooting
7-32
C136
L104
R110
C140
C111
L102
R108
R119
TA123
C115
C135
C134
C133
L111
C126
C120
C112
F101
2
1
3
C122
C138
G
N
D
17
9 GSM850/900IN
GSM850/900OUT
10
6
MODE
4 TX_EN
5
VBATT
VBIAS
8
12
VCC
7
VRAMP
DCS/PCSIN
1
DCS/PCSOUT
14
2
G
N
D
G
N
D
11
G
N
D
13
G
N
D
15 16
G
N
D
PAM100
3 BAND
C130
C124
L103
F103
2
GND1 GND2
4
1 IN
3
OUT
PON_PA
DCS
DCS_TX
VBAT
GSM_TX
MODE_SELECT
RAMP