
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-
21
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L105
C106
R112
R113
C133
R119
C152
C101
9
G G
1012
G G
1418
G
11
PCSRX
VC1
4
VC2
16
G
2122
G G
2324
G
G
3
G
5
G
7
G
8
6
ANT
13
DCSRX
17 DPCSTX
EGSMRX
15
2 EGSM_TX
G
1
19
G
20
G
U100
FEM5440TSC
C114 C115
C121
VCCB_2.9V
C110
C109
VRF_2.8V
C112
L103
R110
R111
C130
C118
C129
C116
C132
C111
C131
C125
C126
L106
L107
C120
L108
C117
R106
D
N
G
06
D
N
G
16
D
N
G
26
D
N
G
36
D
N
G
46
B
B
_
XI
M
_2
C
C
V
7
CAP_I+
8
CAP_I-
9
LO-
53
RX_I+
54
C
N
55
BANDSEL
56
BS2
57
TX_I+
58
D
N
G
95
EDGE_REF-
6
TX_Q-
46
D
N
G
74
CAP_Q+
48
C
N
94
E
5
SX_EN
50
DATA
51
LO+
52
A
N
L
_
C
C
V
9
3
TX_Q+
4
TX_CPO
40
EDGE_LO
41
LNA900
42
LNA1800
43
D
N
G
44
TX_I-
45
B
B
_
C
C
V
1
3
O
C
V
_
X
T_
C
C
V
2
3
TX_900_OUT
33
TX_1800_OUT
34
TX_TUNE
35
RX_EN
36
TX_EN
37
V
R
D_
C
C
V
8
3
UHF_BYP
24
UHF_TUNE
25
F
H
U
_
C
C
V
6
2
O
L_
C
C
V
7
2
RX_Q-
28
RX_Q+
29
3
RX_I-
30
SYN_REF
17
UHF_CPO
18
N
F
_
C
C
V
9
1
EDGE_IF-
2
XTAL_TUNE
20
CLK
21
LE
22
D
D
V
3
2
LNA1900
1
CAP_Q-
10
26MHZ_PAD
11
LPF_ADJ
12
CLK_BUFF_OUT
13
D
N
G
41
D
C
C
V
5
1
P
F_
C
C
V
6
1
VCCD_2.9V
VRF_2.8V
U106
C122
C127
C107
C108
R105
GSM_OUT
DPCS_OUT
GSM74945_OUT
SERDAT
BAND_SEL
CHIP_EN
IF_REF-
DCS_TX_EN
GSM_TX_EN
IF_OUT-
SERCLK
SERLE
LO
DCS74945_OUT
RX_EN
SX_EN
RTX_QN
RTX_QP
RTX_IN
RTX_IP
TX_EN
CLK13M_RF