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Recording Equipment
ER-A57R1
Service manual
Sharp ER-A57R1 Service Manual page 72
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A
ER-A5RS
6
OPTCN1
SIGNAL
5
GND
GND
RDO
WRO
+5V
+5V
A23
A22
A21
A20
4
A19
A18
A17
A16
A15
A14
A13
A12
A11
3
A10
A9
A8
A7
A6
A5
A4
+24V
+24V
A1
2
A0
RESET
OPTCS
GNDP
GNDP
1
A
B
No. No.
SIGNAL
35
1
GND
36
2
GND
(φ)
37
3
4
38
NU1
BREQ
5
39
6
BACK
40
7
41
TRQ2
42
8
TRQ1
EXINT1
43
9
10
EXINT0
44
11
45
TRRQ
12
46
RSRQ
47
RFSH
13
14
48
IPLON
49
15
D7
16
50
D6
17
51
D5
D4
18
52
19
53
D3
20
54
D2
D1
21
55
22
D0
56
23
57
POFF
24
58
VRAM
(+12V)
25
59
26
60
A3
27
61
+24V
28
62
+24V
A2
29
63
30
RES
64
31
65
AS
32
66
NU2
33
67
GND
68
34
GND
B
C
OPTCN2
SIGNAL
No. No.
SIGNAL
GND
1
36
GND
GND
2
37
GND
GND
3
38
GND
(φ)
RDO
4
39
WRO
5
40
NU1
BREQ
6
41
+5V
BACK
7
42
+5V
A23
8
43
TRQ2
A22
9
44
TRQ1
A21
10
45
EXINT1
A20
11
46
EXINT0
A19
12
47
TRRQ
A18
13
48
RSRQ
A17
14
49
RFSH
A16
15
50
IPLON
A15
16
51
D7
A14
17
52
D6
A13
18
53
D5
A12
19
54
D4
A11
20
55
D3
A10
21
56
D2
A9
22
57
D1
A8
23
58
D0
A7
24
59
POFF
A6
25
60
VRAM
A5
26
61
A3
A4
27
62
(+12V)
+24V
28
63
+24V
+24V
29
64
+24V
A1
30
65
A2
A0
31
66
RES
RESET
32
67
AS
OPTCS
33
68
NU2
GNDP
34
69
GND
GNDP
35
70
GND
C
4 ™ 29
D
RSCN1
No.
SIGNAL
1
CD1
2
RD1
SD1
3
ER1
4
GND
5
DR1
6
7
RS1
8
CS1
9
CI1
RSCN2
No.
SIGNAL
1
CD2
2
RD2
SD2
3
ER2
4
GND
5
DR2
6
7
RS2
8
CS2
9
CI2
D
6
5
4
3
2
1
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Chapters
Section 1
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Section 2
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Table of Contents
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This manual is also suitable for:
Er-a5rs
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