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Flow Chart of Troubleshooting
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3-29
VRF_2.8V
C125
R112
C126
C129
R113
R111
AFC
CLK26M
R108
VRF_2.8V
L102
L103
42
1
C
C101
2
2
1
C
TP
L104
C123
C117
B
H
X
T
1
4
D
N
G
5
850LNA_P
6
900LNA_N
7
900LNA_P
8
1800LNA_N
9
1800LNA_P
N
O
M
O
L
4
3
A
N
E
GI
D
V
PI
_
X
T|
PI
5
3
6
3
MI
_
X
T|
MI
7
3
M
Q
_
X
T|
M
Q
8
3
P
Q_
X
T|
P
Q
9
3
B
L
X
T
4
850LNA_N
0
4
SXENA
27
CHIPENA
28
NC
29
NC
3
VPC
30
NC
31
NC
2
3
3
C
C
V
3
3
F
U
B
X|
Z
H
M
62
_
Z
H
M
31
2
TXENA
02
E
N
U
T
X
21
XTAL
22
VCC2
23
DATAIN
24
LATCHENABLE
25
CLK
26
1900LNA_P
21
A
N
E
X
R
31
4
C
C
V
41
NI
F
R
X
T
51
C
P
A
V
61
P
P
M
O
C
71
N
P
M
O
C
81
J
D
A
F
P
L
91
U100
1
VCC1
10
1900LNA_N
11
L105
R121
C102
C112
C114
VBAT
3
1
1
C
C103
7
01
R
C105
L106
C108
C107
C106
L100
L107
C121
5
1
1
C
TP
ANT
DPCS_OUT
GSM_OUT
GSM_TX_EN
DCS_TX_EN
CLK26M
VAPC
XOENA
13M_BUF
VPC
MOD_SEL
RTX_IP
RTX_IN
RTX_QN
RTX_QP
GSM74137_OUT
DCS74137_OUT
TX_EN
SX_EN
SERCLK
SERLE
SERDAT
RX_EN
TX_FB
SAT_DET