Epson 10000 Series Specifications A-11

Signal	Return
Pin	Pin	Signal			Direction	Description
17	-	CHASSIS			-	Printer’s chassis ground,
			GND			which is connected to the
						logic ground.
18	-			NC	-	Not used
19-30	-		GND		-	Twisted-pair return signal
						ground level
31	16			INIT	IN	When this signal goes 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 μs at
						the receiving terminal.
32	-		ERROR		OUT	This signal level goes LOW
						when the printer:
						1) Is out of paper
						2) Is in an error state
						3) Has no ink cartridges
						installed
33	-		GND		-	Same as for Pins 19-30
34	-			NC	-	Not used
35	-		+5 V		OUT	Pulled up to +5 V through
						1 KΩ resistance
36	-			NC	-	Not used

Note:

❑The column heading “Direction” refers to the direction of signal flow as viewed from the printer.

❑“Return” denotes the twisted-pair return to be connected at signal ground level. For the interface wiring, be sure to use a twisted-pair cable for each signal and to complete the connection on the return side.

❑All interface conditions are based on TTL level. Both the rise and fall times of each signal must be less than 0.2 microseconds.

❑Data transfer must be carried out by observing the ACKNLG or BUSY signal. Data transfer to this printer can be carried out only after receipt of the ACKNLG signal or when the level of the BUSY signal is LOW.

Specifications A-11