Pin Assignments - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual

Service Manual
Pin No.
1
2
3
4
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin No.
1
2
3
4
Rev. A

Pin Assignments

Table A-7. CNIO
Signal Name
—
I
I
TOP
STA I
CBSY o
—
NC
o
CCLK o
PRFD o
—
NC
I
RDY I
SBSY I
—
NC
START o
o
CMD o
—
—
—
Table A-8. CNII Pin Assignments
Signal Name I/o
o
LCDCLK
o
I
—
LCDX o
Al I
LEDX o
SWRDX o
—
NC
LCDWRX o
DBO
DB7
DB6 1/0
DB5
DB4
DB3
DB2
—
+5
—
+5
Table A-9. CN12 Pin Assignments
Signal Name
+5
+5
—
—
Description
Ground
Printer ready
Paper top
Engine status
Controller command
Not connected
Video signal
Command clock
Pre feed signal
Not connected
Horizontal synchronized signal
Ensign ready
Status busy
Not connected
Print start signal
Controller ready
Command
Ground
Ground
Ground
Description
System clock
LCD data read
Switch interrupt
Ground
Select of LCD
Address bit 1
LED data wriie
Switch data read
Not connected
LCD data write
Data bus bit O
Data bus bit 7
Data bus bit 6
Data bus bit 5
Data bus bit 4
Data bus bit 3
Data bus bit 2
Data bus bit 1
+5 VDC
+5 VDC
Description
+5 VDC
+5 VDC
Ground
Ground
Appendix
,
A-n