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Flow Chart of Troubleshooting
7-20
C106
C108
R102
C105
C137
C103
ANT101
ANT100
L101
R101
C117
TP103
C110
13
G
G
14
PCS_RX
3
10
VC1
VC2
4
2
VC3
9
1
DCS_RX
DCS|PCSTX
5
11
EGSM_RX
EGSM_TX
7
G
86
G
12
G
F100
ANT
L112
8
VCC2
VCC2
18
VCC_OUT
13
VRAMP
6
12
11
G
G
9
G
19
G
17
7
GSM_IN
GSM_OUT
10
3
TX_EN
VBATT
4
U101
2
BS
5
CEXT
DCS/PCS_IN
1
DCS/PCS_OUT
16
G
15
G
14
G
C109
C113
C111
C116
C104
C114
C107
C115
5
G
G
6
CN100
2
A
C
3
G
1
G
4
VBAT
R100
0
L102
L103
3.9nH
C112
EGSMRX
PCS_RX_EN
DCS_TX_EN
GSM_TX_EN
PCSRX
DCSRX
TXPOWER
GSM_PAM_IN
DCS_PAM_IN
TX_EN
TX_BAND_SEL