Samsung SGH-E720, Service Manual

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SGH-E720 Flow Chart of Troubleshooting
2- 10
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D
(0
)
D
(1
4)
2
4
O
S
C
30
0
D
(1
)
D
[0
:1
5]
D
(1
0)
D
(9
)
D
(8
)
D
(7
)
D
(6
)
D
(5
)
D
(4
)
D
(3
)
D
(2
)
D
(1
)
D
(0
)
D
(0
:1
5)
D
(1
3)
D
(1
2)
2.5
V
_V
C
A
M
D
(0
:1
5)
D
(1
5)
D
(1
4)
D
(1
3)
D
(1
2)
D
(1
1)
V
B
A
T
D
(1
1)
D
(1
0)
D
(9
)
D
(8
)
D
(7
)
D
(6
)
D
(5
)
D
(4
)
D
(3
)
D
(2
)
A
(1
8
)
C
P
_
W
E
N
V
C
A
M
_E
N
D
(1
5)
A
(1
:1
6)
A
(1
6)
A
(1
5)
A
(1
4)
A
(1
3)
A
(1
2)
A
(1
1)
A
(1
0)
A
(9
)
A
(8
)
A
(7
)
A
(6
)
A
(5
)
A
(4
)
A
(3
)
A
(2
)
A
(1
)
A
(2
4)
A
(1
5)
A
(1
4)
A
(1
3)
A
(1
2)
A
(1
1)
A
(1
0)
A
(9
)
A
(8
)
A
(7
)
A
(6
)
A
(2
3)
A
(5
)
A
(4
)
A
(3
)
A
(2
)
A
(1
)
A
(2
2)
A
(2
1)
A
(2
0)
A
(1
9)
A
(1
8)
A
(1
7)
A
(1
6)
A
(1
:2
4)
C
31
2
O
N
E
N
A
N
D
_C
S
N
A
N
D
_IN
T
R
O
M
1_
C
S
L
O
W
E
R
_B
Y
T
E
C
P
_O
E
N
U
P
P
E
R
_B
Y
T
E
C
P
_W
E
N
F
L
A
S
H
_R
E
S
E
T
R
A
M
1_
C
S
C
31
0
R
31
8
C
32
7
2.5
V
_V
C
A
M
C
32
2
1
3 2
R
3
02
C
3
58
1.8
V
_V
C
A
M
C
3
08
V
C
C
D
_1
_8
V
C
C
D
_1
_8
C
32
6
4
C
B
Y
P
U
3
02
R
20
4 R
20
2
R
20
3
H
E
R
A
_1
_
8
C
21
9
R
20
5
U
30
0
R
38
0
C
3
46
C
3
11
C
3
30
C
3
29
V
B
A
T
16
GND
N
/C
5
8
N
/C
N
/C
7
V
IN
11
0
V
O
U
T
1
V
O
U
T
2
9
R
30
3
S
C
L
R
S
T
F
L
A
S
H
_
R
E
S
E
T
L
C
D
_R
D
D(1)
D(0)
D
_
S
D
IN
P
_
C
L
K
M
_
C
L
K
H
O
R
_
R
E
F
C
A
M
_D
(0
:7
)
A
(2
)
A(8)
M
_
H
O
L
D
V
C
C
D
Q
30
1
C
36
7
2.5
V
_V
C
A
M
C
3
28
H
E
R
A
_1
_8
3
1
D
_S
D
O
U
T
D
_
M
S
C
K
D
_B
C
K
D
_L
R
C
K
S
D
A
L
C
D
_A
D
_(
15
)
L
C
D
_A
D
_(
14
)
L
C
D
_A
D
_(
13
)
L
C
D
_A
D
_(
12
)
L
C
D
_A
D
_(
11
)
L
C
D
_A
D
_(
10
)
V
D
D
C
F
5
V
D
D
C
D
6
V
D
D
I
V
D
D
I
F
6
V
D
D
IC
D
H
1
XIN2
B10
A10 XOUT2
3
N
C
5 4
O
U
T
C
36
2
U
3
06
6
B
Y
P
E
N
1 2
G
N
D
GND
7
IN
B3
S
V
D
D
I
E
3
T_MODE0 K10
U
S
B
_D
M
G
2
G
1
U
S
B
_D
P
U
V
D
D
I
G
4
V
D
D
A
C
K
9
D
5
V
D
D
C
E
5
E10
M_SD8 E9
E7 M_SD9
M_WR_N
A7
2
NC
NC
1
A
9
P
G
N
D
B
9
P
V
D
D
STROBE
M_SD13
M_SD14
D8
C10 M_SD15
M_SD2
G8
F10 M_SD3
M_SD4 F9
F8 M_SD5
F7 M_SD6
M_SD7
B7
C9 M_SA0
M_SA1
C8
M_SD0 G10
G9 M_SD1
E8 M_SD10
D10 M_SD11
D9 M_SD12
D7
K
7
L
_W
R
_
N
J7
MS_CS_N
C6
B8 M_ADS
M_CS_N
A6
M_HOLE
B6
C7 M_INTR
A8 M_RD_N
M_RESET_N
K
4
J4
L
_D
A
4
L
_D
A
5
K
1
K
2
L
_D
A
6
K
3
L
_D
A
7
J2
L
_D
A
8
L
_D
A
9
J3 J8
L
_R
D
_N
L
_R
E
S
E
T
_N
H
3
L
_D
A
12
H
4
L
_D
A
13
J5
H
5
L
_D
A
14
L
_D
A
15
G
3
H
6
L
_D
A
16
L
_D
A
17
G
6
K
5
L
_D
A
2
L
_D
A
3
GPIO_4
A4
GPIO_5
L
S
_C
S
_
N
H
8
G
7
L
_A
D
S
L
_C
S
_N
H
7
K
6
L
_D
A
0
L
_D
A
1
J6
H
2
L
_D
A
10
L
_D
A
11
G
N
D
G
N
D
E
6
G
5
G
N
D
G
N
D
J1
GPIO_0 C5
GPIO_1 B5
A5
GPIO_2
GPIO_3 C4
B4
A1
D_BCK J10
H9
D_LRCK
J9
D_MSCK
K8
D_SDATAIN
H10
D_SDATAOUT
D
4
G
N
D
G
N
D
E
4
F
4
C_D7
C_HS C3
A2
C_MCLK
B2
C_PCLK
B1
C_PWDN
C_RST A3
C1
C_SCK
C_SDA C2
C_VS
C_D0 D3
D2
C_D1
C_D2 D1
E2
C_D3
C_D4 E1
F1
C_D5
C_D6 F2
F3
2
E
N
1
E
N
2
3
6
G
N
D
GND
1
11
2
GND
GND
1
31
4
GND
1
5
GND
V
E
R
_
R
E
F
C
A
M
_
R
S
T
D(9)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(15)
D(14)
D(13)
D(12)
D(11)
D(10)
M
L
C
D
_C
S
M
_
H
O
L
D
L
_
A
D
S
L
C
D
_
W
E
N
L
C
D
C
_IN
T
C
P
_
O
E
N
L
C
D
C
_C
S
A
(1
)
L
C
D
_A
D
_(
00
)
L
C
D
_A
D
_(
01
)
L
C
D
_A
D
_(
02
)
L
C
D
_A
D
_(
03
)
L
C
D
_A
D
_(
04
)
L
C
D
_A
D
_(
05
)
L
C
D
_A
D
_(
06
)
L
C
D
_A
D
_(
07
)
L
C
D
_A
D
_(
08
)
L
C
D
_A
D
_(
09
)
L
C
D
_A
D
_[
00
:1
5]
S
U
B
_
L
_
C
S