Epson 4100 manual Gnd

C-6	Appendix C—Parallel Interface
Signal Pin #
and		Signal Name	Description
Direction
26		DATA 7 RET
27		DATA 8 RET
28		ACKNLG* RET
29		BUSY RET
30		PAPER OUT RET
31	&	INIT*	A low pulse of at least 100 ms (low sensitivity) or
			1.66 ms (high sensitivity) resets the printer to its
			initial power-on state and clears the buffer.
32	%	+5V	Signal is normally high.
33		GND
34		NC	No connections.
35		NC	No connections.
36		NC	No connections.

Parallel Interface Pin Assignments, continued