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
2/12
CPU(HD6415108)
/W
R
/RD
/AS
+5
V
+5
V
+5
V
+5
V
3-
8C
3-
8C
3-
8C
C9
2
10
0P
C9
1
10
0P
C9
0
10
0P
R1
30
10
K
R1
36
10
K
R1
34
10
K
R1
32
10
K
+5
V
C9
5
0.1
u
C9
6
47
u1
6V
C9
7
47
u1
6V
R1
35
10
0
R1
33
10
0
R1
31
10
0
(R
12
9)
47
NMI
+5
V
/RES
1
NMI
2
VS
S
3
D0
4
D1
5
D2
6
D3
7
D4
8
D5
9
D6
10
D7
11
D8
12
D9
13
D1
0
14
D1
1
15
D1
2
16
D1
3
17
D1
4
18
D1
5
19
VS
S
20
A0
21
A1
22
A2
23
A3
24
A4
25
A5
26
A6
27
A7
28
A8
29
A9
30
A1
0
31
A1
1
32
A1
2
33
A1
3
34
A1
4
35
A1
5
36
VS
S
37
A1
6
38
A1
7
39
A1
8
40
A1
9
41
A2
0
42
A2
1
43
A2
2
44
A2
3
45
VS
S
46
WAI
T
47
BA
CK
48
BR
EQ
49
DO
PS
50
P3
4
51
P3
5
52
P36
(DR3
)
53
P37
(DR4
)
54
VC
C
55
P4
0
56
P4
1
57
P4
2
58
P4
3
59
P4
4
60
NEJ
61
SH
EN
62
OP
BS
63
VS
S
64
TRG
I
65
P5
1
66
P5
2
67
P5
3
68
P5
4
69
FMRS
70
P5
6
71
STO
P
P
5
7
72
P6
0
73
P6
1
74
P6
2
75
P6
3
76
P6
4
77
P6
5
78
RCO
P6
6
79
HP P6
7
80
VS
S
81
AV
SS
82
VP
J
83
VP
R
84
VP
TES
T
85
VP
PS
86
AV
CC
87
VC
C
88
IRQ0
89
IRQ1
90
SC
K1
91
SC
K2
92
RXD1
93
TXD1
94
RXD2
95
TXD2
96
VS
S
97
EX
TAL
98
XTA
L
99
VS
S
10
0
PH
AI
10
1
E
10
2
AS
10
3
RD
10
4
HWR
10
5
LW
R
10
6
RFSH
10
7
VC
C
10
8
MD0
10
9
MD1
11
0
MD2
11
1
STB
Y
11
2
IC8
CPU(
HD6
41
51
0
8
)
C9
3
0.1
u
C9
4
0.1
u
5-
6A
3-
8B
+5
V
/RES
ET
R1
64
4.7
K
SR
?
SR
-1
D0
D1
D2
D3
D4
D5
D6
D7
D[0..7]
3-
8C
+5
V
10
K X
8
R1
91
R1
92
R1
94
C1
10
C1
11
C1
12
C1
13
C1
14
C1
15
C1
17
C1
16
R1
87
R1
88
R1
89
R1
90
R1
93
10
0P
X8
+5
V
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1
0
A1
1
10
K X
8
A[0
..2
3]
3-
8B
+5
V
10
K X
8
R1
96
R1
98
R2
02
R2
01
R2
00
R1
99
R1
97
R1
65
R1
66
R1
67
R1
68
R1
69
R1
70
R1
72
R1
71
R1
95
+5
V
10
K X
8
ER
C
L
DRQ
8-
4B
8-
4B
R1
39
10
0
R1
40
10
0
R1
41
10
0
R1
42
10
0
R1
43
10
0
R1
44
10
0
R1
45
10
0
R1
46
10
0
PD
S
8-
2B
/SHE
N
8-
8B
FRES
BU
SY_
A
/RDY_A
R1
73
R1
74
R1
75
R1
76
R1
77
R1
78
R1
79
R1
80
VC
C
Vr
f
FIL2
10
0P
1
3
2
X4
19
.66M
H
z
TM
FVHS
7-
1D
7-
8A
+5
V
D2
8
1S
S3
53
R1
60
3.6
K
"F"
R1
59
16
K"F"
+
24V
TXD2
RXD2
/IRQ0
/IRQ1
PH
AI
+5
V
+5
V
+
5
V
RXD
TXD
+5
V
+
5
V
+5
V
+
5
V
3-
8B
6-
2C
3-
8B
10
-7
C
10
-7
C
3-
8B
3-
8C
SC
K2
+5
V
6-
4B
D8
1S
S3
53
R1
48
16
K"F"
R1
47
3.6
K
"F"
C8
9
47
P
C1
00
NU
R1
26
4.7
K
R1
27
1K
R1
28
1K
R1
49
4.7
K
X
4
R1
23
R1
24
R1
25
/ERS
/CSS
/CDS
/RSS
/RI
/DRS
3-
4A
3-
4A
+5
V
+5
V
+5
V
+5
V
10
-7
C
R1
53
10
K
R1
52
10
K
R1
51
10
K
R1
50
0o
hm
R1
55
10
K
C1
07
10
00
P
2
1
CN1
2
NER CN
R2
03
0o
hm
R1
58
0o
hm
/PRS
T
/PTMG
+5
V
R1
37
10
K
R1
38
10
K
C9
9
33
0p
C9
8
33
0p
+5
V
/W
A
IT
+5
V
/BA
C
K
10
0P
X8
C1
34
C1
35
C1
36
C1
37
C1
38
C1
39
C1
40
C1
41
C1
04
10
0P
A1
2
A1
3
A1
4
A1
5
10
0P
X8
A1
6
A1
7
A1
8
A1
9
A2
0
A2
1
A2
2
A2
3
3-
3B
+
24V
7-
6C
10
0P
X8
C1
19
C1
20
C1
21
C1
23
C1
28
C1
29
C1
18
C1
22
C1
24
C1
25
C1
27
C1
26
C1
30
C1
31
C1
32
C1
33
+
24V
C1
06
10
0U
/35
V
CO
M
DS
/DRAW
1
+
24V
DS
/DRAW
0
+
24V
9
16
2
7
15
10
4
5
1
8
3
6
14
11
12
13
IC9
TD
62
30
8F
1
2
3
CN1
1
DR CN
1
2
3
CN1
0
DR CN
C1
03
0.1
U
C1
09
0.1
U
C1
01
0.1
U
C1
02
0.1
U
<NOTE>
/FRES
BU
SY
4-
4C
/BRE
Q
/DR0
/DR1
4-
4C
7-
7A
/RDY
R1
22
10
K
C8
8
10
0P
R1
61
22
K
R1
63
47
K
C1
05
10
00
P
C1
42
10
00
P
C1
43
10
00
P
C1
44
10
00
P
R1
62
4.7
K
C5
0
FRES
BU
SY_
A
/RDY_A
+5
V
+5
V
+5
V
R1
85
10
K
R1
86
10
K
R1
82
10
0
R1
83
10
0
R1
81
10
0
NOTE
R1
84
10
K
C1
45
33
0P
C1
46
33
0P
C1
47
33
0P
R1
54
10
K
R1
56
10
K
R1
57
0o
hm
C1
08
10
00
P
2
1
CN1
3
NEJ
CN
R15
0
,15
3
,15
5
,15
7
:
E
R
A4
50
O
N
LY
R15
1
,15
6
,15
8
,20
3
:
E
R
A4
55
O
N
LY
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