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Flow Chart of Troubleshooting
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7-35
GSM_PAM
TXVCO
ANT_SWITCH
R705
25
VDD
8
N
C
N
C
91 0
N
C
N
C
14
15
N
C
N
C
7
16
N
C
17
18
N
C
G
N
D
21
G
N
D
23
24
GND
30 GND
32 GND
N
C
7
NC
29
NC
31
ANT
22
A
N
T
26
CTL-A
CTL-B
27
28
CTL-C
1
G
N
D
G
N
D
6
12
GND
19
G
N
D
U702
C723
R706
C725
C724
R707
C722
R708
VREG_RFRX_2.8V
UMTS_ANT
GSM_ANT_SEL2_N
GSM_ANT_SEL1_N
GSM_ANT_SEL0_N
R731
R716
C755
R720
C748
R715
C754
R718
C749
C759 C760
C753
G
S
M
IN
4
11
G
S
M
O
U
T
19 RSVD
VAPC
20
VBATT
17
V
C
C
1
A
2
V
C
C
1
B
6
GND 7
8
GND
GND 9
GND 10
16
G
N
D
G
N
D
14 13
G
N
D
G
N
D
12
U701
1
B
S
3
D
C
S
/P
C
S
IN
D
C
S
/P
C
S
O
U
T
15
ENABLE
18
5
G
N
D
21 GND
R721
TA744
C756
C739
C
7
5
0
OUT2
1
2
S
W
1
S
W
2
4
8
V
B
1
12
V
B
2
10
VC
3
G
G
6
G
7
G
11
9
G
G
14
13
G
OUT1
5
OSC700
R713
R729
R726
R714
R722
C745
R727
R730
C752
R
7
1
7
R719
C758
R732
C746
C747
C738
C757
C
7
5
1
R728
R725
R724
R723
MOD_CP
VBATT
TXVCO
GSM_VCO_EN_N
DCS_VCO_EN_N
GSM_PA_PWR_CTL
GSM_BAND
VREG_RFTX_2.8V
VREG_RFTX_2.8V
GSM_PA_PWR_SV