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Flow Chart of Troubleshooting
9-36
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B S
L
GSM 850 / 900
High
5.9 dB
L
Low
L
L
L
ANT_SEL3
T X _ E N
Operational Mode
< GSM / EDGE Logic Table >
9.63 dB
L
C106
25V
KMS-515
RFS100
2
AC
3
1
GG
4
C163
L107
NC
L134
C171
GSM_OUT
10
NC
13
3
TX_EN
VBATT
4
VRAMP
6
14
G
G
12
11
G
G
9
19
G
17
G
8
G
7
GSM_IN
AWT6280RM11P8
2
BS
5
CEXT
DCS/PCS_IN 1
DCS/PCS_OUT
16
15
G
G
18
PAM100
C111
25V
R102
R110
L114
C177
C144
R127
C146
GSM900_RX2
UMTS1
15
UMTS2
16
17
UMTS3
14 VC1
VC2
13
VC3
12
11
VC4
VDD
10
GSM1800_RX2
22
GSM1800|1900_TX
GSM1900_RX1
7
8
GSM1900_RX2
1
GSM850_RX1
GSM850_RX2
2
GSM850|900_TX
25
GSM900_RX1
3
4
21
G4G5
23
G6
24 26
G7G8
27 28
G9
GSM1800_RX1
5
6
LMSP4LMA-550
F100
ANT
19
9
G1
18
G2G3
20
R125
25V
C174
C157
C176
6.3V
C102
20369-001E
RFS101
G
3
2
G
G
4
RFIN
1
C148
C169
L116
C104
R107
C160
C158
L135
C113
C136
L101
C170
C112
C168
10V
L102
C162
C145
L108
R130
L129
R126
C143
R108
L112
TA101
10V
R106
C110
L100
L128
C147
DCS1800_PCS1900_TX
EGSM900_TX
C140
*
PCS_RXM
JTAG_ANT
GSM_PA_PWR_CTL
VBATT_4.2V
GSM_PA_EN
GSM_BAND
PCS_RXP
GSM_RXM_900
GSM_RXP_900
DCS_RXM
DCS_RXP
UMTS_ANT_2100