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SGH-i300 Flow Chart of Troubleshooting and Circuit Diagrams
2-6
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2-4. SIM Part
Phone can't access SIM
card
Yes
Yes
Check the circuit to
CN701
No
No
Resolder CN701
Yes
Check the
SIM connector CN701
connection to SIM card
Check the
pin 1 of CN701
voltage is 2.8V
END
C703
5
5
6
6
7
GG
89
GG
10
CN701
11
22
33
4
4
C705 C706
C702
UP_RST
3
J
1
D
D
V
J13
VDD12
C11
VDD34
0
1
C
5
D
D
V
3
1
B
7
6
D
D
V
K14
SIM_CLK
J11
SIM_IO
K11
SIM_RST
N9
UP_CLK
P10
UP_IO
R10
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
1
1
F
R
U
C
H
_
D
N
G
8
E
Q
D
N
G
C704
SIMCLK
SIMDATA
SIMRST