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Flow Chart of Troubleshooting and Circuit Diagrams
3-36
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R706
MSMP_2.6V
C741
RFRX1_2.85V
VDDA6
36
VDDA7
5
4
8
A
D
D
V
1
4
M
D
D
V
3 VDDRF1
91
2
F
R
D
D
V
12 VDDRF3
T
S
B
S
33
TCXO
25
UMTS_TUNE
7 VDDA1
42
2
A
D
D
V
26
VDDA3
27
VDDA4
32
VDDA5
34
PMIXP
12
MI
_
X
R
02
PI
_
X
R
32
M
Q
_
X
R
22
P
Q
_
X
R
6
4
S
AI
B
_
R
2
4
K
C
B
S
3
4
T
D
B
S
4
4
IMIXP
28
LO_OUT
1
C
N
0
5
1
5
2
C
N
51
S
AI
B
_
A
N
L
P
61
NI
_
A
N
L
P
31
T
U
O
_
A
N
L
P
10 PMIXM
11
MI
_
X
R
G
0
4
PI
_
X
R
G
7
3
M
Q_
X
R
G
P
Q_
X
R
G
8
3
71
S
AI
B
_
A
N
LI
81
NI
_
A
N
LI
41
T
U
O
_
A
N
LI
8 IMIXM
9
S
AI
B
_
A
N
L
G
7
4
NI
_
A
N
L
G
1 GLNA_OUT
5 GMIXM
6 GMIXP
GND1
4
9
4
2
D
N
G
35
GPS_TUNE
9
3
2 BLANK
29
CP_DUMP
CP_OUT 30
31
FAQ
8
4
U700
TCXO_2.85V
R704
C726
C729
C728
L708
TCXO_2.85V
TCXO_2.85V
C744
C723
C721
TCXO_2.85V
C743
C736
C737
C738
L705
R707
C727
C734
1
IN
OUT
3
4
OUT
F700
G
2
5
G
C745
R708
C730
R705
L707
C746
P
Q_
X
R
M
Q_
X
R
PI
_
X
R
MI
_
X
R
K
C
B
S
T
S
B
S
T
D
B
S
TCXO
NI
A
N
L_
S
T
M
U
UMTS_RX_VCO_IN
UMTS_RXM
UMTS_RXP
UMTS_RX_TUNE
C711
C704
C702
R700
4
PWDN
3
RFIN
8
SREF
1 VPOS
VRMS 7
U701
COMM
5
6
FLTR
GND
9
IREF
2
C700
RFTX_2.85V
TA701
VBAT
R701
5
G
6
G
7 9
7
G
10
8
G
9
G
12
5
RX
11
TX
ANT
8
1
1
G
13
01
G
2
G
2 3
3
G
4
G
4 6
DUF700
C748
C701
C703
TA700
L700
C706
C720
21
VCC_WCDMA
3 VEN
VMODE
2
9 VRAMP
1
WCDMA_IN
WCDMA_OUT
20
D
N
G
23
GSM_IN
10
GSM_OUT
12
TX_EN
6
7
VBATT 22
VBATT
11
VCC2_GSM
15
VCC_OUT
CEXT
8
DCS|PCS_IN
4
DCS|PCS_OUT
18
13
D
N
G
D
N
G
14 16
D
N
G
17
D
N
G
19
D
N
G
PAM700
5 BS
L702
C707
C709
L701
C708
C705
C710
HDET
DCSTX_OUT
GSMTX_OUT
UMTS_LNAIN
UMTS_ANT