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