Samsung SGH-E750, Service Manual

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Flow Chart of Troubleshooting
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7-19
VBAT
Y
13
16 Y0
Y1
15
Z
2
Z
0
3
Z
1
1
_
E
N
A
4
GND
NC
5
N
C
18 19
N
C
VCC
14
12
X
10
X
0
X
1
11
NLAS4783
U600
9
A
8
B
7
C
GND
6
17
EARSPK_L
E
A
R
S
P
K
_
C
O
M
EAR_MUTE
E
A
R
S
P
K
_
R
E
A
R
1
EAR2
H
F
R
_
N
C
7
2
0
C
7
1
8
C
7
2
4
+VDD_IO_HIGH
C
7
2
8
C
7
0
8
C
7
2
2
C
7
0
9
VBAT
C
7
2
1
C
7
2
9
C
7
0
5
C
7
0
6
C
7
0
7
C713
C
7
1
0
C
7
1
1
C
7
1
9
C
7
2
6
C
7
2
7
C
7
2
5
C712
8
8
9
9
39
39
4
4
40
40
41
41 42
42
5
56
6
7
7
31
31 32
32
33
33 34
34
35
35 36
36
37
37 38
38
23
23 24
24
25
25 26
26
27
27 28
28
29
29
3
3
30
30
16
16
17 17
18
18
19 19
2
2
20
20
21
21 22
22
1
1
10
10
11 11
12
12
13 13
14
14
15 15
CN700
C
7
0
4
C
7
2
3
LCD_BL_ON
L_WR
LD(3)
LD(4)
LD(5)
LD(6)
LD(7)
LD(8)
LD(9)
LD(10)
LD(11)
LD(12)
LD(13)
LD(14)
LD(15)
HFR_P
VIB
LD(0)
LD(1)
LED_RED
LED_GREEN
LED_BLUE
AMP_EN
MELODY_SEL
LD(2)
RS
LCD_MAIN_CS
HFR_N
LCD_SUB_CS
KEY_COL(0)
OLED_EN
KEY_ROW(4)