Service manual
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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10-22
C137
R116
VCCA
47
B
C
C
V
1
41
C
P
V
V_IF1
23
29
2
F
I
_
V
21
V_RF
IF_OUT+
24
IF_OUT-
25
27
LE
LO_IN
22
C
N
33
45
PAC_EN
C
P
A
V
30
T
A
B
V
35
6
D
N
G
7
7
D
N
G
89
8
D
N
G
9
D
N
G
10
GSM_IN
53
T
U
O
_
M
S
G
15
+
N
I
_
F
I
31
-
N
I
_
F
I
32
3
D
N
G
4
52
GND30
54
GND31
GND32
55
56
GND33
GND
57
5
4
D
N
G
5
D
N
G
6
2
2
D
N
G
39
3
2
D
N
G
4042
4
2
D
N
G
5
2
D
N
G
43
GND26
44
GND27
48
GND28
49
50
GND29
GND15
17
GND16
18
20
GND17
8
1
D
N
G
34
9
1
D
N
G
36
2
D
N
G
3
0
2
D
N
G
37
1
2
D
N
G
38
DCS_IN
51
DCS_OUT
19
2
1
D
N
G
0
1
D
N
G
11
1
1
D
N
G
12
2
1
D
N
G
13
3
1
D
N
G
14
16
GND14
U508
BANDSEL
46
CLK
28
DATA
26
C150
R115
C151
R118
C140 C141
C147C146
C139
C135
VBAT
C138
4
4
1
C
L109
VRF_2.8V
VRF_2.8
V
PAC_EN
LO
DPCS_OUT
GSM_OUT
SERLE
SERCLK
SERDAT
DCS74945_OUT
GSM74945_OUT
BAND_SEL
VAPC
-
F
E
R
_
F
I
+
F
E
R
_
F
I
IF_OUT-
IF_OUT+