Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual page 151

Appendix
Pin No.
1,2
3,4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23,24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
Signal Name
—
+5 v
—
D2 I/o
D3
Do I/o
I/o
I/o
D7 I/o
D5 I/o
D8
BWE1 o
o
A2
—
o
A5
o
A6
o
A3
o
A4
o
o
o
A7
o
A8
o
o
0
o
o
o
o
o
o
o
o
o
o
o
—
NC
o
o
o
o
Description
VDC
+5
Ground
Data bus bit 2
Data bus bit 3
Data bus bit O
Data bus bit 1
Data bus bit 6
Data bus bit 7
Data bus bit 4
Data bus bit 5
Data bus bit 10
Data bus bit 11
Data bus bit 8
Data bus bit 9
Data bus bit 14
Data bus bit 15
Data bus bit 12
Data bus bit 13
Byte enables 1
Address bus bit 2
Ground
Address bus bit 5
Address bus bit 6
Address bus bit 3
Address bus bit 4
Address bus bit 9
Address bus bit 7
Address bus bit 8
Address bus bit 13
Address bus bit 14
Address bus bit 11
Address bus bit 12
Address bus bit 17
18
Address bus bit
Address bus bit 15
Address bus bit 16
bus bit 21
Address
Address bus bit 22
Address bus bit 19
Address bus bit 20
Address bus bit 26
Address bus bit 27
Not connected
Write enable
Address bus bit 28
Address bus bit 29
Address strobe
. . . .
Rev. A