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Flow Chart of Troubleshooting
10-31
RTR6280
2.5G RF
TCXO_19.2MHz
4
OUT
F100
G
2
G
5
1
IN
OUT
3
C129
C151
ANT102
1
1
2
2
3
3
V_RF_S3_2.7V
C141
C159
C105
C144
R114
R112
C115
L100
L101
C106
C153
R107
C114
V_RF_S3_2.7V
C120
C100
C146
C145
VREG_MSMP_2.6V
C122
C162
R109
C116
R113
R119
C139
V_RF_S2_2.1V
C164
C126
C143
R118
R120
C123
C107
R104
C157
C113
R103
C149
VREG_TCXO_2.8V
C119
L109
17
NC
8
NC
9
C104
46
N
Q
_
X
T
56
P
Q_
X
T
66
F
E
RI
_
C
A
D
76
S
AI
B
R_
X
T
86
G
U
L
S_
D
N
G
96
VDDA2
7
C
N
07
C
N
75
2
T
U
O_
F
R_
B
H
85
3
T
U
O_
F
R
_
B
H
95
VDDA1
6
2
A
D
D
V
06
2
A
D
D
V
16
2
A
D
D
V
26
NI
_
X
T
36
PI
_
X
T
5
GCELL_INP
50
GCELL_INN
51
NI
_
T
E
D
P
25
1
A
D
D
V
35
2
A
D
D
V
45
1
T
U
O_
F
R
_
B
L
55
1
T
U
O_
F
R_
B
H
65
2
T
U
O_
F
R
_
B
L
42
NC
43
GPCS_INP
44
GPCS_INN
45
DCS_INP
46
DCS_INN
47
EGSM_INP
48
EGSM_INN
49
VTUNE1
35
WPRXSE2
36
NC
37
WPRXSE1
38
NC
39
VDDA1
4
NC
40
NC
41
NC
82
M
NI
_
X
M_
B
W
92
VDDA1
3
P
B
L
X
R
P
W
03
M
B
L
X
R
P
W
13
P
B
H
X
R
P
W
23
M
B
H
X
R
P
W
33
T
U
O_
2
E
S
X
R
P
W
43
WPRXSE1_OUT
02
2
A
D
D
V
12
1
A
D
D
V
22
M
D
D
V
32
2
E
N
U
T
V
42
2
A
D
D
V
52
N
O_
F
R
62
2
A
D
D
V
72
P
NI
_
X
M_
B
W
13
PRX_IP
14
NC
15
NC
16
NC
17
C
N
81
C
N
91
TCXO
2
T
D
B
S
U100
VDDA2
1
NC
10
PRX_QP
11
PRX_QN
12
PRX_IN
L111
C121
C134
C138
7
T
N
A
8
9
D
N
G
C150
26
VBATT
27
BS2
BS1
28
29 GND
RSVD
3
RX4
4
5
RX3
6
RX2
RX1
91
MODE
2
02
D
N
G
DCS|PCS_IN
21
D
N
G
22
GSM_IN
23
42
D
N
G
VAPC
25
11
21
D
N
G
31
D
N
G
41
D
N
G
D
N
G
51
D
N
G
61
71
D
N
G
D
N
G
81
D
N
G
V_RF_S3_2.7V
PAM100
1
_TXEN
WCDMA1
10
D
N
G
C158
C130
2
OUT
3
VCC
4
VCON
1
C133
OSC100
GND
C124
C118
C110
TA100
C127
C148
C161
C125
L103
G
3
G
5 10
G
IN1
1
IN2
4
8
OUT1
6
OUT2
F101
BAL1
9
BAL2
7
2
G
R123
V_RF_S2_2.1V
C142
C135
L102
V_RF_S2_2.1V
L105
L106
C140
R121
C166
C103
C163
R106
C155
C109
R110
C154
C102
L112
V_RF_S3_2.7V
C132
C152
ANT100
1
1
2
2
3
3
C137
C128
C131
C165
L110
C117
C136
C111
V_RF_S3_2.7V
R100
C108
VBATT
R105
IN
OUT
3
OUT
4
C156
F102
G
2
G
5
1
C147
V_RF_S2_2.1V
20
1
R
RFS100
2
A
C
1
G
3
G
4
C160
R108
C101
C167
C112
GSM_ANT_SEL0_N
GSM_TX
DCS1800_PCS1900_TX
UMTS_ANT
T
N
A_
J
PWR_DET
PCS_RX_P
PCS_RX_N
GSM_RX_N
GSM_RX_P
DCS_RX_N
DCS_RX_P
GSM_ANT_SEL1_N
GSM_ANT_SEL2_N
GSM_PA_PWR_CTL
RTR6280_TCXO
DCS1800_PCS1900_TX
TCXO
TRK_LO_ADJ
R
T
R_
T
D
B
S
S
RX_Q_P
RX_Q_N
RX_I_P
RX_I_N
DAC_REF
GSM_TX
UMTS_RXP_2100
UMTS_RXM_2100
00
12
_
P
X
R_
S
T
M
U
00
12
_
M
X
R_
S
T
M
U
N
O_
X
T_
N
O_
F
R
TX_Q_N
TX_Q_P
TX_I_P
TX_I_N
GSM_RX_N
GSM_RX_P
DCS_RX_N
DCS_RX_P
PCS_RX_P
PCS_RX_N
RTR6280_TCXO
UMTS_TX
UMTS_RX
Summary of Contents for SGH-F400
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