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Flow Chart of Troubleshooting
3-31
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R611
R609
C631
GSM_OUT
8 RSVD
5 VBATT
6 VPC
VSUP
4
R616
ENA
GND 15
GND 9
13
GND
11
GND
GND 10
17
GND
GSMIN
7
12
PAM600
3 BS
COUP_OUT 16
2 DCS|PCS_IN
DCS|PCS_OUT 14
1
R608
C624
C629
R613
C630
R607
C622
R612
C625
VBAT
C628
C620
R617
SAT_DET
GSM74137_OUT
VPC
TX_FB
BAND_SEL
DPCS_OUT
PAC_EN
GSM_OUT
DCS74137_OUT
R614
C621
C626
C627
C623
R615
R610
C619
VRF_2.9
A
2
3 GND
1
NC
NC
5
VCC
6
4
Y
U600
CLK13M_OUT
CLK13M_MC
CLK13M_TR
CLK13M_WM
VBAT
R603
C618
L602
4
2
D
N
G
1
T
O
H
T
O
H
3
6
6
OSC600
2
1
D
N
G
ANT601
1 1
2
2
3
3
4
4
5
5
C609
80
6
L
R605
L605
R606
L603
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
_
XT|
MI
73
M
Q_
XT|
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
XT
51
C
P
A
V
61
UCD600
C601
VRF_2.9
C614
C612
ground
C611
L601
C607
4
4
5
5
6
6
L606
ANT602
1
1
2
2
3 3
C613
R602
L600
C602
C606
R604
C617
C616
C610
C608
C605
C615
3
5
G
7
G
G
14
PCS_RX1 9
8
PCS_RX2
4
VC1
VC2
2
F600
ANT
6
DCS_RX1 11
10
DCS_RX2
1
DCS/PCS_TX
EGSM_RX1 13
12
EGSM_RX2
EGSM_TX
C604
A
2
3
C
1
GND
4
GND
RFS601
C603
L607
R601
U607
DPCS_OUT
GSM_OUT
GSM_TX_EN
DCS_TX_EN
ANT
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