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ANT101
ANT103
C100
L102
L109
C105
LB_RX
C103
HB_RX
HB_TX
LB_TX
F101
L118
1 IN
GSM1800_OUT 6
HB_RX
GSM1800_OUT
GSM1900_OUT
GSM1900_OUT 9
L120
F102
1
LB_RX
IN
GSM850_OUT
GSM850_OUT
GSM900_OUT 8
GSM900_OUT
L113
VCC_SYN_2.8V
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RFS100
L100
L116
C101
C147
L121
GND
22
RX1
VBATT
17
11
RX0
18
TP100
GPCTRL1
TP101
10
NC
GPCTRL0
19
9
GND
13
TP102
PAM100
NC
TX_EN
12
8
GND
R104
6
GND
VRAMP
5
7
GND
3
GND
GND
1
24
GND
23
GND
C134
21
L101
L108
L103
7
8
C120
L110
C123
L112
C128
6
7
L111
9
L114
L115
REF_ON_PMU
XMODE
XDIV
AFC
VDD
VDD
XTAL2
XTAL1
XEN
GND
NC
NC
OSC100
RF_CLK
RF_EN
RF_DATA
9-27
Flow Chart of Troubleshooting
VBAT
MOD_STANDBY
BAND_SEL
C104
PON_PA
RAMP
R102
RFOH
R103
RFOL
VDD_IO_LOW_1.8V
GND
U103
VDD
VDD
VIO
_RESET
_PDN
C111
RX_I_P
RX_I_N
RX_Q_P
RX_Q_N
C148
HB_TX
C144
LB_TX
VDD_RX_TX_2.8V
C130
TP120
RF_RESET
PON_3587_SYNTH
BT_CLK
D_REF_CLK
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