Epson LQ-2070 User Manual page 139

Pin Signal name
no.
18 Logic-H
35 +5 V
17 Chassis
16, 33 GND
19-30
15, 34 NC
* In/Out shows the direction of signal flow from the printer's point of view.
A-16
Specifications, Command Summary, and Character Tables
GND In/Out*
- Out
- Out
- -
- -
- -
Description
A high signal indicates that all other
signals sourced by the peripheral
are in a valid state.
This line is pulled up to +5 V through
3.3 k resistor.
Chassis GND.
Signal GND.
Not connected.