Epson EPL-9000 Service Manual page 154

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.
Pin Assignments
Table A-7.
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. 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. 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
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
+5
Description
+5
+5
Ground
Ground
Appendix
,
A-n