Read Sharp ER-A490 (serv.man4) Service Manual online
C
D
B
A
1
2
3
4
6
C
D
B
A
5
1
2
3
4
6
5
No. No.
SIGNAL
SIGNAL
1
36
GND
GND
2
37
GND
GND
3
38
GND
GND
4
39
(
φ
)
RDO
5
40
NU1
WRO
6
41
+5V
BREQ
7
42
+5V
BACK
8
43
TRQ2
A23
9
44
TRQ1
A22
10
45
EXINT1
A21
11
46
EXINT0
A20
12
47
TRRQ
A19
13
48
RSRQ
A18
14
49
RFSH
A17
15
50
IPLON
A16
16
51
D7
A15
17
52
D6
A14
18
53
D5
A13
19
54
D4
A12
20
55
D3
A11
21
56
D2
A10
22
57
D1
A9
23
58
D0
A8
24
59
POFF
A7
25
60
VRAM
A6
26
61
A3
A5
27
62
(+12V)
A4
28
63
+24V
+24V
29
64
+24V
+24V
30
65
A2
A1
31
66
RES
A0
32
67
AS
RESET
33
68
NU2
OPTCS
34
69
GND
GNDP
35
70
GND
GNDP
No. No.
SIGNAL
SIGNAL
1
36
GND
GND
2
37
GND
GND
3
38
4
39
(
φ
)
RDO
5
40
(NU1)(EXWAIT)
WRO
6
41
+5V
BREQ
7
42
+5V
BACK
8
43
TRQ2
A23
9
44
TRQ1
A22
10
45
EXINT1
A21
11
46
EXINT0
A20
12
47
TRRQ(NU)
A19
13
48
RSRQ(IRQ1)
A18
14
49
RFSH
A17
15
50
IPLON
A16
16
51
D7
A15
17
52
D6
A14
18
53
D5
A13
19
54
D4
A12
20
55
D3
A11
21
56
D2
A10
22
57
D1
A9
23
58
D0
A8
24
59
POFF
A7
25
60
VRAM
A6
26
61
A3
A5
27
62
(+12V)
A4
28
63
+24V
+24V
29
64
+24V
+24V
30
65
A2
A1
31
66
RES
A0
32
67
AS
RESET
33
68
NU2
OPTCS
34
GND
GNDP
GND
GNDP
35
No.
SIGNAL
1
2
3
4
5
6
7
8
9
CD1
RD1
SD1
ER1
GND
DR1
RS1
CS1
CI1
RSCN1
OPTCN2
OPTCN1
ER-A5RS
No.
SIGNAL
1
2
3
4
5
6
7
8
9
CD2
RD2
SD2
ER2
GND
DR2
RS2
CS2
CI2/+5V
RSCN2
3 – 10
Click on the first or last page to see other ER-A490 (serv.man4) service manuals if exist.