Read Sharp ER-A450S (serv.man3) Service Manual online
8
7
6
5
4
3
2
1
A
B
C
D
1
2
3
4
5
6
7
8
D
C
B
A
3/12
GATE ARRAY(MPCA7)
FRD
FS
C
K
FS
D
4-
4C
4-
4C
+5V
+5V
/TWA
IT
7-
6B
R22
9
10
K
R22
7
10
0
R22
8
10
0
R22
6
10
0
C17
0
10
0P
+5V
RF
1
JF
2
PCUT
3
FCUT
4
VF
5
ST
AM
P
6
SL
F
7
SL
RS
8
SL
M
T
D
9
RES
10
TRG
11
TRG
12
INT0
13
INT1
14
HTS1
15
SCK
1
16
ST
H1
17
RASVZ
18
N.U
19
VCC
20
VS
S
21
INTMC
R
22
VRE
S
C
23
SL
TM
G
24
SL
RS
T
25
AS
26
RD
27
WR
28
PHA
I
29
SDT6
31
SDT5
32
VS
S
33
SDT4
34
SDT3
35
SDT2
36
SDT1
37
D0
38
D1
39
D2
40
D3
41
VS
S
42
D4
43
D5
44
D6
45
D7
46
RESET
48
SS
PRQ
47
INT2
49
INT3
50
RXDI
51
TX
D
I
52
SCK
1
53
IRQ0
54
A0
55
A1
56
A2
57
A3
58
A4
59
A5
60
EX
IN
T0
12
0
EX
IN
T1
11
9
EX
IN
T2
11
8
EX
IN
T3
11
7
WR
0
11
6
RD0
11
5
RA15
11
4
RA16
11
3
VS
S
11
2
RA17
11
1
RA18
11
0
EX
WA
IT
10
9
WA
IT
10
8
MCR
2
10
7
MCR
1
10
6
DAX2
10
5
DAX1
10
4
RCRX
10
3
IRRX
10
2
VS
S
10
1
VCC
10
0
UATX
99
UARX
98
UASCK
97
IRTX
96
RCO
95
RCVRDY2
94
PT
MG
83
TRGI
82
A2
3
81
LCD
C
80
A2
2
79
A2
1
78
A2
0
77
A1
9
76
A1
8
75
A1
7
74
A1
6
73
A1
5
72
A1
4
71
A1
3
70
A1
2
69
A1
1
68
A1
0
67
A9
66
A8
65
A7
64
A6
63
VCC
62
VS
S
61
PRS
T
84
RCVRDY1
93
MA
19
92
MA
18
91
MA
15
90
TE
ST
89
MD0
88
MD1
87
IP
LON
86
INT4
85
SDT7
30
RASP
16
0
DOTEN
15
9
TW
AIT
15
8
N.U
15
7
N.U
15
6
N.U
15
5
N.U
15
4
N.U
15
3
ST
H2
15
2
SCK
2
15
1
HTS2
15
0
SL
M
T
R
14
9
SL
M
T
S
14
8
SL
M
T
D
14
7
RJMTR
14
6
RAS3
14
5
NU
14
4
VS
S
14
3
VCC
14
2
AS
KRX
14
1
SY
NC
14
0
DOT8
13
9
DOT9
13
8
RJMTD
13
7
RJMTS
13
6
DOT5
13
5
DOT6
13
4
D0T7
13
3
VS
S
13
2
DOT1
13
1
DOT2
13
0
DOT3
12
9
DOT4
12
8
RJTMG
12
7
RJRST
12
6
RAS1
12
5
RAS2
12
4
ROS2
12
3
ROS1
12
2
OP
TCS
12
1
IC10
G.A
(MPCA
7)
/RE
S
+5V
+
5V
+5V
+
5V
+5V
6-
2C
C14
8
0.0
1
u
(R
204
)
10
K
R20
7
10
K
R20
8
10
K
R20
5
10
K
R20
6
10
K
VRE
S
C
/A
S
/RD
/W
R
PHA
I
D[0.
.7]
+5V
+5V
D0
D1
D2
HTS
/S
CK
ST
H
/P
OFF
C14
9
33
0P
C15
0
33
0P
C15
1
33
0P
C15
2
33
0P
C15
3
33
0P
R21
0
10
K
1-
1A
8-
4B
8-
7A
8-
4B
2-
1D
2-
1D
2-
1D
2-
1C
7-
2C
R20
9
10
K
+5V
+5V
+5V
+
5V
+5V
+5V
R22
5
10
K
C16
6
10
00P
C16
7
10
00P
C16
8
10
00P
R23
1
10
K
R21
6
10
K
R21
7
10
K
R21
8
10
K
R21
9
10
K
+5V
+
5V
+5V
RAS3
/ROS1
RAS2
RAS1
+5V
+
5V
/OPTCS
5-
7C
5-
5D
5-
3D
7-
7B
5-
7B
4-
4C
+5V
/TPR
CRQ
R22
0
10
K
R22
1
10
K
R22
2
10
K
R22
3
10
K
R22
4
10
K
R23
0
10
K
/E
XINT0
/RD0
/W
R0
C16
1
33
0P
C16
2
33
0P
C16
3
33
0P
C16
4
33
0P
C16
5
33
0P
6-
2C
6-
2C
6-
2C
/TRQ1
6-
2C
C16
9
33
0P
/W
AIT
+5V
+5V
+
5V
+5V
C15
7
33
0P
C15
8
33
0P
C15
9
33
0P
C16
0
33
0P
2-
6B
R21
3
10
K
R21
5
10
K
R21
4
10
K
A
[0..23
]
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
A1
2
5-
6A
2-
5C
2-
1C
2-
1C
2-
1C
2-
1C
NMI
/R
ES
ET
RXD2
TX
D
2
SCK
2
/IRQ0
/S
HEN
8-
8B
A1
3
A1
4
A1
5
A1
6
A1
7
A1
8
A1
9
A2
0
A2
1
A2
2
A2
3
+5V
+5V
/P
RST
/P
T
M
G
MA
15
R21
1
10
K
2-
2A
2-
2A
5-
8B
/RDY
4-
4C
R21
2
10
K
C15
5
10
u50V
C15
6
0.1
u
C15
4
0.1
u
Click on the first or last page to see other ER-A450S (serv.man3) service manuals if exist.