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SGH-E880 Flow Chart of Troubleshooting
2-
19
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FEM
CN700
A
2
3 C
1 G
4
G
C733
GSM1900RX
GSM900RX
1
GSM900RX
2
10
GSM900TX
11
VC1
9
VC2
VC3
12
C734
ANT
13
G
7 14
G
3
GSM1800RX
GSM1800RX
4
GSM1800/1900TX
8
5
GSM1900RX
6
C725
F700
C722
L704
C723
C721
C724
L703
50
7
L
C732
C737
L707
C726
PCS_RX_EN
PCS_LNA_IN_P
PCS_LNA_IN_N
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_P
GSM_LNA_IN_N
DCS_TX_EN
GSM_TX_EN
C701
C700
C704
VRF_2.9
C702
N
D
P
_
10
N
E
S_
12
TXIP
4
TXQN
7
TXQP
6
D
D
V
9
D
D
V
32
N
E
X
26
NI
X
8
T
U
O
X
27
3
RXIP
2
RXQN
1
P
Q
X
R
28
KL
C
S
13
I
D
S
14
O
D
S
11
TXIN
5
RFIDN
19
18
RFIDP
RFIGN
21
RFIGP
20
RFIPN
17
RFIPP
16
D
O
F
R
22
G
O
F
R
23
RXIN
15
D
N
G
29
30
D
N
G
31
D
N
G
33
D
N
G
34
D
N
G
GND
35
36
GND
U700
1
G
AI
D
24
2
G
AI
D
25
GND
VRF_2.9
C703
C730
C729
C731
PCS_LNA_IN_N
PCS_LNA_IN_P
EL
R
E
S
DPCS_PAM_IN
GSM_PAM_IN
CLK13M_RF
DCS_LNA_IN_N
DCS_LNA_IN_P
GSM_LNA_IN_N
GSM_LNA_IN_P
RTX_IN
RTX_IP
RTX_QN
RTX_QP
KL
C
R
E
S
T
A
D
R
E
S
N
E_
F
R
