Samsung SGH-E720, Service Manual

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SGH-E720 Flow Chart of Troubleshooting
2- 2
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B
O
A
R
D
_H
O
L
E
G
2
G
3
J
T
A
G
T
R
I
D
E
N
T
H
P
G
1
G
4
R
S
T
D
S
P
_
T
D
O
D
S
P
_T
D
I
D
S
P
_
T
M
S
D
S
P
_
T
C
K
D
S
P
_R
W
N
V
B
A
T
J
IG
_
O
N
S
D
S
_
R
X
D
S
D
S
_T
X
D
A
N
T
U
S
B
_
5
V
U
S
B
_
D
+
U
S
B
_
D
-
S
P
K
1
P
S
P
K
1
N
M
IC
+
M
O
T
M
IC
-
C
20
5
R
20
7
V
2
0
1
C
N
50
6
1
1
1
5
15 16
1
6
V
C
C
D
2
Q
2
0
0
1
3 2
2
2
8
2
8
2
9
2
9
3
3
3
0
3
0
3
1
3
1
4
4 5
5 6
6
A
N
T
3
2
D
+
9 10
D
-
F
-W
E
2
2
G
N
D
7
G
N
D
2
4
2
5
H
P
/P
O
W
E
R
M
IC
+
13 14
M
O
T
+
R
X
D
2
6
S
P
K
+
11 12
S
P
K
-
2
1
T
C
K
C
2
0
7
1
9
T
D
I
T
D
O
1
8
T
M
S
2
0
1
7
T
R
S
T
2
7
T
X
D
C
2
17
2
3
V
_
B
A
T
T
C
2
1
1
8
V
_
B
U
S
C
2
2
1
V
C
C
D
_
1
_
8
C
2
2
0
F200
4
Y
V
C
C
D
U
20
4
2
A
1
B
3
G
N
D
5 V
C
C
C
22
3
C
22
2
O
S
C
20
1
V
C
C
D
_1
_5
C
20
6
1
0
0
K
R
2
4
1
V
C
C
D
_1
_8
R
2
4
3
R
2
0
9
R
20
8
C
20
2
R
2
4
2
C
20
8
C
20
1
C
20
4
C
21
6
V
R
T
C
H11
VSS8
H12
VSS9
R11 VSSA_D
VSSA_U F18
X1RTC
H19
X2RTC
F19
VSS14
M9
VSS15
VSS16 M10
VSS17 M11
M12
VSS18
VSS2 A18
VSS3 G8
VSS4 G9
VSS5 H8
H9 VSS6
H10 VSS7
C1
C14
VDD_IO_1P8_6
D9
VDD_IO_1P8_7
D18
VDD_IO_1P8_8
VDD_IO_1P8_9 F1
VRTC G18
A2
VSS1
J12 VSS10
VSS11 K8
L7
VSS12
VSS13 L8
M8
P1 VDD_IO_1P8_12
T18
VDD_IO_1P8_13
VDD_IO_1P8_14 U1
VDD_IO_1P8_15 U5
U12 VDD_IO_1P8_16
W8
VDD_IO_1P8_17
W18
VDD_IO_1P8_18
VDD_IO_1P8_2 B6
VDD_IO_1P8_3 B12
B16
VDD_IO_1P8_4
VDD_IO_1P8_5
B8
VDD_CORE2 B13
G2
VDD_CORE3
H18
VDD_CORE4
VDD_CORE5 M2
VDD_CORE6 N18
VDD_CORE7 V7
VDD_CORE8 V13
VDD_IO_1P8_1 B4
L4
VDD_IO_1P8_10
L16 VDD_IO_1P8_11
V
14
T
D
O
T
12
T
E
S
T
1
U
1
5
T
14
T
E
S
T
2
T
E
S
T
3
V
16
W14
TMS
TRSTN R12
TX0
M3
K7 TX1
T11 VDDA_D
F17
VDDA_U
VDD_CORE1
T2 SIMIO
SPCLK0
R3
M
1
8
S
P
C
L
K
1_
P
IO
1
8
T3 SPFS0
N
15
S
P
F
S
1_
P
IO
15
R4 SPRXD0
S
P
R
X
D
1_
P
IO
17
M
1
7
U2 SPTXD0_I2SD
N
16
S
P
T
X
D
1_
I2
S
D
_P
IO
16
T
C
K
U
14
T
D
I
PIO43_MCI_DAT0_EN
J1
6
P
IO
47
PWM1_PIO46 G5
RESTN G15
RIO_PIO01
P3
RTCALARMN
H17
N2 RTS0_PIO04
R
W
N
V
6
M1 RX0_IRQ28
L6 RX1_IRQ28
SIMCLK
P4
R13
U
18
P
IO
33
P
IO
34
R
14
P
IO
35
_A
_A
25
_B
O
O
T
S
E
L
F
2
F16 PIO36_USB_OEN
E17 PIO37_USB_DATA
PIO38_MCI_CLK
J15
L14 PIO39_MCI_CMD_EN
PIO40_MCI_DAT_EN
M14
R16 PIO41_IRDATX
PIO42_IRDARX R17
N14
K13 PIO21_MCI_DAT0
PIO22_MCI_DAT1
L12
L13 PIO23_MCI_DAT2
L15 PIO24_MCI_DAT3
V19 PIO25
U16 PIO26
PIO27 U19
PIO28
W17
E
14
P
IO
30
_W
A
IT
N
P
12
P
IO
31
_
IR
Q
6
PIO32
P
16
PIO07_USB_SUSP B19
PIO08_MCI_CMD
J13
C19 PIO09_USB_VPI
PIO10
V17
PIO11_USB_VMI
C18
D17 PIO12_USB_VPO
E16 PIO13_USB_VMO
P5 PIO14_SIMRST
P15 PIO19_PWRKEEP
PIO20_SYSCLKREQ
P19
J5
KEYBRD3
J4
J8 KEYBRD4
KEYBRD5
H6
H4 KEYBRD6
KEYBRD7
H1
KEYBRD8
H3
G6 KEYBRD9
1
NC1
2
NC2
G16 OSC32OUT
P
IO
00
_
IR
Q
5
IO
B
IT
0_
P
IO
05
V
12
N
11
IO
B
IT
1_
P
IO
06
IR
Q
1
M
1
6
M
1
9
IR
Q
2
IR
Q
3
P
17
IR
Q
4
P
18
J7 KEYBRD0
KEYBRD1
J6
KEYBRD10 G4
KEYBRD11_PSW1_BUF
H2
KEYBRD2
D
_D
2
D
_D
3
T
7
R
8
D
_D
4
V
8
D
_D
5
U
8
D
_D
6
D
_D
7
T
8
T
9
D
_D
8
D
_D
9
R
9
F
L
A
S
H
R
S
T
N
H
1
4
T
15
IN
T
0
IO
W
6
D
_A
6
N
6
D
_A
7
R
6
D
_A
8
D
_D
0
U
6
D
_D
1
T
6
P
8
D
_D
10
P
9
D
_D
11
N
8
D
_D
12
N
9
D
_D
13
D
_D
14
N
10
D
_D
15
P
11
R
7
M6 CTS0_PIO29
N5 DCD0_PIO44
P2 DSR0_PIO02
DTR0_PIO03 N4
V
1
D
_A
0
W
2
D
_A
1
W
3
D
_A
2
V
3
D
_A
3
D
_A
4
U
4
D
_A
5
T
5
V
4
A
_D
4
F
11
A
_D
5
E
11
A
_D
6
A
_D
7
G
1
2
A
_D
8
D
1
1
A
_D
9
E
12
A
_O
E
N
B
1
4
D
1
4
A
_W
E
N
W12 CKI
N
12
C
K
O
_IA
C
K
T
17
C
P
T
S
T
S
T
O
P
_
C
K
O
B
1
7
A
8
A
_D
0
A
_D
1
E
9
C
12
A
_D
10
A
_D
11
A
1
2
F
12
A
_D
12
D
1
2
A
_D
13
E
13
A
_D
14
D
1
3
A
_D
15
A
_D
2
F
9
A
_D
3
G
1
0
G
1
1
A
_A
9
C
2
H
1
6
A
_B
E
0N
A
_B
E
1N
A
1
7
A
1
4
A
_C
S
0N
C
15
A
_C
S
1N
A
_C
S
2N
G
1
4
A
_C
S
3N
J1
4
A
_C
S
4N
D
1
5
C
16
A
_C
S
5N
F
15
A
_C
S
6N
A
_C
S
7N
A
_A
20
A
_A
21
E
3
A
_A
22
F
5
A
_A
23
F
4
A
_A
24
F
3
A
_A
3
A
6
C
6
A
_A
4
A
_A
5
C
5
D
7
A
_A
6
A
_A
7
E
7
C
4
A
_A
8
A
_A
10
A
_A
11
B
3
B
1
A
_A
12
D
6
A
_A
13
D
5
A
_A
14
A
_A
15
D
3
A
_A
16
E
8
A
_A
17
F
8
A
_A
18
E
6
D
2
A
_A
19
A
_A
2
D
8
E
4
U
20
1
A
T
C
K
_C
T
S
1
M
4
L
5
A
T
D
I_
R
T
S
1
T
13
A
T
D
O
_P
W
M
2
K
1
2
A
T
M
S
_P
IO
45
A
_A
0
B
7
A
_A
1
C
8
A
3
V
C
C
D
C
2
1
0
C
20
9
C
20
3
V
C
C
D
_
1_
8
G
N
D
3
2
O
U
T
V
C
C
1
U
20
3
R
S
T
U
S
B
_V
P
I
U
S
B
_S
U
S
P
C
L
K
32
K
K
E
Y
_R
O
W
(3
)
K
E
Y
_R
O
W
(2
)
K
E
Y
_R
O
W
(1
)
K
E
Y
_R
O
W
(0
)
P
S
W
1_
B
U
F
K
E
Y
_R
O
W
(4
)
K
E
Y
_C
O
L
(0
)
D
E
B
U
G
_C
T
S
C
L
K
13
M
_T
R
C
P
_
W
E
N
D
(1
5)
C
P
_T
D
O
R
A
M
1_
C
S
S
IM
D
A
T
A
S
IM
C
L
K
S
D
S
_R
X
D
D
E
B
U
G
_R
X
D
D
E
B
U
G
_R
T
S
R
T
C
A
L
A
R
M
U
S
B
_D
A
T
A
U
S
B
_O
E
N
E
A
R
_S
W
IT
C
H
H
A
L
L
_S
E
N
S
O
R
X
O
E
N
A
Q
P
W
R
_K
E
E
P
S
IM
R
S
T
U
S
B
_V
M
O
U
S
B
_V
P
O
U
S
B
_V
M
I
A
(5
)
A
(6
)
A
(7
)
A
(8
)
A
(9
)
A
(1
0)
A
(1
1)
A
(1
2)
A
(1
3)
A
(1
4)
A
(1
5)
A
(1
6)
A
(1
7)
A
(1
8)
A
(1
9)
A
(2
0)
A
(2
1)
A
(2
2)
A
(2
3)
A
(2
4)
A
(1
:2
4)
S
D
S
_T
X
D
D
E
B
U
G
_T
X
D
D
S
P
_T
M
S
D
S
P
_T
D
O
U
P
_S
C
L
K
D
(3
)
D
(4
)
D
(5
)
D
(6
)
D
(7
)
D
(8
)
D
(9
)
D
(1
0)
D
(1
1)
D
(1
2)
D
(1
3)
D
(1
4)
D
(0
:1
5)
U
P
P
E
R
_B
Y
T
E
O
N
E
N
A
N
D
_C
S
R
O
M
1_
C
S
F
L
A
S
H
_R
E
S
E
T
C
P
_O
E
N
A
(0
)
A
(1
)
A
(2
)
A
(3
)
A
(4
)
D
S
P
_D
B
(8
)
D
S
P
_D
B
(9
)
D
S
P
_D
B
(1
0)
D
S
P
_D
B
(1
1)
D
S
P
_D
B
(1
2)
D
S
P
_D
B
(1
3)
D
S
P
_D
B
(1
4)
D
S
P
_D
B
(0
:1
5)
D
S
P
_D
B
(1
5)
K
E
Y
_C
O
L
(4
)
K
E
Y
_C
O
L
(3
)
K
E
Y
_C
O
L
(2
)
K
E
Y
_C
O
L
(1
)
U
P
_C
S
D
(0
)
D
(1
)
D
(2
)
D
S
P
_
A
B
(1
)
D
S
P
_
A
B
(2
)
D
S
P
_
A
B
(3
)
D
S
P
_
A
B
(4
)
D
S
P
_
A
B
(5
)
D
S
P
_
A
B
(6
)
D
S
P
_
A
B
(7
)
D
S
P
_
A
B
(8
)
D
S
P
_A
B
(0
:8
)
D
S
P
_D
B
(0
)
D
S
P
_D
B
(1
)
D
S
P
_D
B
(2
)
D
S
P
_D
B
(3
)
D
S
P
_D
B
(4
)
D
S
P
_D
B
(5
)
D
S
P
_D
B
(6
)
D
S
P
_D
B
(7
)
L
C
D
C
_C
S
Y
M
U
_C
S
L
O
W
E
R
_
B
Y
T
E
K
E
Y
_C
O
L
(0
:4
)
D
S
P
_R
W
N
D
S
P
_IO
D
S
P
_IN
T
U
S
B
_C
O
N
IN
T
R
Q
JA
C
K
_IN
T
Y
M
U
_
IR
Q
L
C
D
C
_IN
T
C
P
_T
M
S
C
P
_T
C
K
C
P
_T
D
I
D
S
P
_
A
B
(0
)
P
C
M
_
IN
P
C
M
_
S
Y
N
C
H
A
L
L
_S
E
N
S
O
R
D
S
P
_T
C
K
D
S
P
_T
D
I
O
L
E
D
_B
A
C
K
_E
N
F
L
A
S
H
_E
N
1
A
U
D
IO
_O
U
T
_S
E
L
U
P
_
S
D
I
U
P
_S
D
O
M
_H
O
L
D
E
A
R
_O
U
T
_S
E
L
V
B
T
_E
N
K
E
Y
_R
O
W
(0
:5
)
D
L
C
_D
E
T
E
C
T
B
T
_S
L
E
E
P
D
IM
_E
N
V
C
A
M
_E
N
JIG
_
O
N
B
P
_V
F
A
M
P
_
S
H
D
N
B
R
IG
H
T
N
E
S
S
P
_M
O
D
E
U
S
B
_D
E
T
N
A
N
D
_IN
T
P
C
M
_
C
L
K
P
C
M
_
O
U
T
K
E
Y
_R
O
W
(5
)