Fujitsu DL9300, DL9400 manual 206

						INTERFACE INFORMATION
							Interface
Pin	Return		Signal		Direc-	Description
No.	Pin No.		name		tion
15	–			–	–	No connection
16	–	Signal Ground			–	Logic ground level (0 V)
17	–	Frame Ground			–	Printer chassis ground line.
						FG and SG are connected.
18	–			–	–	No connection
19–	–		Signal Ground		–	Twisted pair return lines
30
31	–				Input	If this signal is low for more
			Input Prime
			(INPRM)			than 50 μs, the printer is reset
						to the initial condition and is
						placed online.
32	–				Output	This signal is low when the
			Fault
						printer is offline, paper is out,
						or when there is a printer
						error.
33	–	Signal Ground			–	Logic ground level (0 V)
34	–			–	–	No connection
35	–	+5 VR			Output	Pulled up to +5 V through a
						3.3 kΩ resistor
36	–				Input	Not used
			SLCT-IN

User's Manual D-3