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Flow Chart of Troubleshooting
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3-2
OUT
_SHDN
4
VBAT
C235
GND 2
5 GND
IN
6
LX
1
3
U205
C236
VCCD_1.8
VCCD_1.6
VCORE_1.5
R217
C232
D201
L201
VBAT
R603
C618
4
2
D
N
G
1
T
O
H
T
O
H
3
OSC600
2
1
D
N
G
80
6
L
R605
R606
1800LNA_N
9
1800LNA_P
P
Q_
X
T|
P
Q
93
BL
X
T
4
850LNA_N
04
B
H
X
T
14
D
N
G
5
850LNA_P
6
900LNA_N
7
900LNA_P
8
NC
31
NC
23
3
C
C
V
33
N
O
M
OL
43
A
N
E
GI
D
V
53
PI
_
X
T|
PI
63
MI
_
X
T|
MI
73
M
Q_
X
T|
M
Q
83
DATAIN
24
LATCHENABLE
25
CLK
26
SXENA
27
CHIPENA
28
NC
29
NC
3
VPC
30
P
P
M
O
C
71
N
P
M
O
C
81
J
D
A
F
PL
91
F
U
B
X|
Z
H
M6
2_
Z
H
M3
1
2
TXENA
02
E
N
U
T
X
21
XTAL
22
VCC2
23
1
VCC1
10
1900LNA_N
11
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
UCD600
VRF_2.9
C607
R602
C606
R604
C617
C616
C610
C608
C605
C615
R601
XOENA
MOD_SEL
SAT_DET
AFC
CLK13M_OUT
GSM74137_OUT
DCS74137_OUT
TX_EN
SX_EN
SERCLK
SERLE
SERDAT
VAPC
RX_EN
TX_FB
VPC
RTX_IP
RTX_IN
RTX_QN
RTX_QP