Epson DFX-5000+ than, Signal, ground, at the receiving, This level becomes LOW, When this level becomes, Printer's chassis ground, Pulled up to +5V through

Signal	Return
Pin	Pin	Signal						Direction	Description
14								IN	When this signal is LOW, the
				AUTO
					FEED				paper	is	automatically fed
							XT		one line after printing.
15					NC				Not used
16					O V				Logic ground level
17						FG			Printer's chassis ground,
									which is isolated from the
									logic ground
18					+5V				Pulled up to +5V through
									3.3	resistance.
19-30				GND					Twisted-pair return signal
									ground level
31								IN	When this level becomes
						INIT
									LOW, the printer controller is
									reset to its state when the
									power is first turned on and
									the print buffer is cleared.
									This level is normally HIGH; its
									pulse width must be more
									than 50		at the receiving
									terminal.
32								OUT	This level becomes LOW
			ERROR
									when the printer is:
									1) In a paper-out or a paper
									jam state
									2) When the PAUSE button is
									pressed
									3) In an error state
33				GND					Signal	ground
3 4					N C				Not used
35					+5V			OUT	Pulled up to +5V through
									3.3	resistance
36			SLCTIN					IN	The DC1/DC3 codes are
									valid only after this signal is
									HIGH when the printer is
									turned on.

A-12 Technical Specifications