Keyboard Connector Pin Assignments; Serial Port Loop-Back Connector Pin Assignments - Epson 10020 User Manual

Keyboard Connector Pin Assignments

Pin no.
1
2
3
4
5
6-8
Parallel Port Loop-back Connector Pin Assignments
Signal name
Strobe
Data bit 0
Auto feed
Init. printer
Select input
(Output signal)

Serial Port Loop-back Connector Pin Assignments

Signal name
Transmit data
Request to send
Data terminal ready
(Output signal)
Signal name
KBD CLK
KBD DATA
-KBD RESET
GND
+5V
NC
Pin no.
1
2
14
16
17
Pin no.
2
4
20
Direction Description
I/O
l/O
O
—
—
—
Pin no.
— 13
— 15
—
12
— 10
—
11
Pin no.
— 3
— 5
— 6
Keyboard clock
Keyboard data
-Keyboard reset
Ground
Power
No connection
Signal name
Select
Error
P.END (out of paper)
Acknowledge
Busy
(Input signal)
Signal name
Receive data
Clear to send
Data set ready
(Input signal)
Specifications B-9