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Flow Chart of Troubleshooting
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9-29
R103
ANT_M100
L107
L112
L109
TP100
L103
L113
R119
R118
R120
R102
C135
R106
R104
C103
R101
C127
GSM850|EGSM_TX
13
NC
VC1
10
2 VC2
DCS|PCS_RX
3
DCS|PCS_TX
G
4
G
6 7
G G
9 12
G
11
GRX
5
U101
8
ANT
1
C134
C133
10NF
C117
C114
C101
C116
C120
C112
XEN
2
3
XMODE
5
2
8
T
U
O
X
1
3
XTAL1
0
3
XTAL2
_PDN
0
1
9
_RESET
N
E
S
_
2
1
OI
D
S
3
VDD
3
1
2
1
VDD
VDD
8
2
VDD
9
2
1
1
VIO
6
2
XDIV
N
DI
F
R
0
2
P
DI
F
R
9
1
N
EI
F
R
2
2
1
2
P
EI
F
R
N
PI
F
R
8
1
P
PI
F
R
7
1
RFOH
6
1
5
1
RFOL
K
L
C
S
P
Q
B
5
4
1
GND
GND
3
3
NC
4
3
NC
5
3
36
C
N
N
AI
F
R
4
2
P
AI
F
R
3
2
7
2
AFC
6
NI
B
PI
B
7
N
Q
B
4
U103
OSC100
2
4
3
1
C106
C108
L101
L104
C115
L106
L105
L111
R105
G
2
G
3
G
5
1
IN
OUT
4
C109
F102
2
A
C
1
G
3 4
G
RFS100
C102
7
OUT2
3
G
5
G
G
0
1
1 IN1
IN2
4
OUT1 8
9
OUT1
OUT2 6
F100
G
2
C113
L110
ANT_M101
C118
C119
C110
L108
GSM_IN
16
GSM_OUT
TX_EN
23
26
VBATT
VLOGIC
25
24
VRAMP
G
G
3
G
5
G
7
8
G
G
9
0
1
G
G
1
1
6
G
G
1
3
2
3
G
G
3
3
4
3
G
G
35
36
G
G
37
38
8
1
G
0
2
G
G
1
2
G
7
2
8
2
G
2
G
G
9
2
0
3
BS
4
DCS|PCS_I N
DCS|PCS_OUT
19
G
1
2
1
G
G
3
1
4
1
G
G
5
1
G
7
1
PAM100
22
C126
VBAT
PON_PA
RAMP
BAND_SEL
VC1
VC2
DCS_TX
GSM_TX
+VDD_RX_TX_2.8V
GSM_TX
DCS_TX
+VDD_IO_LOW_1.8V
BT_CLK
+VCC_SYN_2.8V
PON_4208_M
RFIC_RESET
RF_DATA
RF_EN
RF_CLK
RX_TX_IN
RX_TX_QN
RX_TX_QP
REF_ON_PMU
RFIC_RESET
RX_TX_IP
D_REF_CLK
6
0
1
C
8
0
1
C
C109
C110
C114
5
1
1
C
6
1
1
C
9
1
1
C
0
2
1
C
F1
02
8
0
1
L
3
1
1
L
0
0
1
M
A
P
1
0
1
R
4
0
1
R
R105
8
1
1
R
9
1
1
R
0
2
1
R
TP100
C101
2
0
1
C
2
1
1
C
3
1
1
C
C117
C118
6
2
1
C
C127
4
3
1
C
3
3
1
C
5
3
1
C
0
0
1
F
1
0
1
L
L104
5
0
1
L
L106
L107
9
0
1
L
L110
L111
L112
OSC100
6
0
1
R
RFS100
U1
01
U103