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Flow Chart of Troubleshooting
9-56
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L111
C102
L110
24
3
VC1
VC2
4
5
VC3
VC4
6
7
V
D
D
G
8
9
GSM1800|1900TX
17
GSM1800RX
GSM1900RX
18
19
GSM1900RX
A
N
T
2
UMTS1
20
21
UMTS2
UMTS3
22
23
G
G
1
G
G
10
11
GSM850|900TX
GSM850RX
12
13
GSM850RX
GSM900RX
14
15
GSM900RX
GSM1800RX
16
RFS101
C109
C108
L124
C106
L117
L118
L107
C103
C101
C
1
G
3
4
G
RFS100
A
2
L114
L108
L116
C157
L112
L123
L113
VREG_SYNTH_2.7V
L106
L105
L109
TXR_WCDMA2100
TXR_WCDMA900
RX_GSM850_P
RX_GSM850_N
RX_EGSM900_P
RX_EGSM900_N
RX_DCS1800_N
RX_DCS1800_P
RX_PCS1900_N
RX_PCS1900_P
R108
C121
C117
C115
C120
N
C
7
1
N
C
8
VDDA2
VTUNE_GPS
9
T
X
_
IN
6
4
T
X
_
IP
6
5
T
X
_Q
N
6
6
T
X
_Q
P
D
A
C
_
IR
E
F
6
7
6
8
T
X
_R
B
IA
S
6
9
G
N
D
_
S
L
U
G
7
VDDA2
7
0
H
B
_R
F
_
O
U
T
1
5
7
L
B
_
R
F
_O
U
T
2
5
8
H
B
_R
F
_
O
U
T
2
5
9
H
B
_R
F
_
O
U
T
3
VDDA1
6
6
0
V
D
D
A
2
6
1
V
D
D
A
2
6
2
V
D
D
A
2
6
3
EGSM_INN
5
VTUNE1
50
GCELL_INP
51
GCELL_INN
5
2
P
D
E
T
_I
N
5
3
V
D
D
A
1
5
4
V
D
D
A
2
5
5
L
B
_
R
F
_O
U
T
1
5
6
WDRXLB
42
GPS_IN
43
VDDA2
44
GPCS_INP
45
GPCS_INN
46
DCS_INP
47
DCS_INN
48
EGSM_INP
49
W
P
R
X
S
E
2
_O
U
T
35
WPRXSE1_OUT
36
WPRXSE2
37
VDDA2
38
WPRXSE1
39
WDRXHB2
4
VDDA1
40
WDRXHB1
41
V
D
D
A
2
2
8
W
B
_
M
X
_I
N
P
2
9
W
B
_
M
X
_I
N
M
3
VDDA1
3
0
W
P
R
X
L
B
P
3
1
W
P
R
X
L
B
M
3
2
W
P
R
X
H
B
P
3
3
W
P
R
X
H
B
M
3
4
TCXO
2
0
S
B
D
T
2
1
V
D
D
A
2
2
2
V
D
D
A
1
2
3
V
D
D
M
2
4
V
T
U
N
E
2
2
5
V
D
D
A
2
2
6
R
F
_O
N
2
7
PRX_QN
13
PRX_IN
14
PRX_IP
15
DRX_QP
16
DRX_QN
17
DRX_IP
1
8
D
R
X
_
IN
1
9
N
|C
2
U100
1
VDDA2
10
VDDA1
11
PRX_QP
12
C156
C132
C122
C130
C111
C133
C131
VREG_PA_2.1V
C163
L119
C161
C160
C119
C135
C159
VREG_RFRX1_2.7V
C113
R113
C116
RTR_W2100_RX
PAM_RFOUT_W900
RX_GPS
RX_GSM850_P
RX_GSM850_N
PWR_DET
PAM_RFOUT_G850_EGSM
PAM_RFOUT_DCS_PCS
PAM_RFOUT_W2100
RX_EGSM900_P
RX_DCS1800_N
RX_DCS1800_P
RX_PCS1900_N
RX_PCS1900_P
RX_EGSM900_N