Epson 7000 service manual Connector Pin Assignments and signals Forward Channel

EPSON Stylus Pro 7000 Revision B

Table 1-16. Connector Pin Assignments and signals - Forward

Channel

Pin	Signal	Return	In/	Functional Description
No.	Name	Pin	Out
1	-STROBE	19	I	Data reception pulse. Data is read at the falling
				edge of this pules.
				The DATA0 through DATA7 signals represent
2-9	DATA0~7	20-27	I	data bits 0 to7, respectively. Each signal is at
				high level when data is logical 1 and low level
				when data is logical 0.
10	-ACKNLG	28	O	This signal is a negative pulse indicating that
				the printer can again accept data.
				HIGH means the printer cannot receive data.
11	BUSY	29	O	This occurs when the printer is receiving data
				or when the printer is in an error state.
12	PE	28	O	HIGH means no paper is loaded.
13	SLCT	28	O	Always HIGH when the printer is on.
14	-AFXT	30	I	Not used
15	NC	-	-	Not connected
16	GND			Ground for twisted pair return
17	Chassis			Ground for frame/body
	GND
18	Logic H			Pulled up to +5V via 3.9Kohm
19-30	GND			Ground for twisted pair return
				Pulse width of 50uS or more means LOW
31	-INIT	30	I	pulse, and the falling edge of LOW signal
				causes the printer to initialize.
32	-ERROR	29	O	LOW means printer error
33	GND	----	----	Ground for twisted pair return

Table 1-16. Connector Pin Assignments and signals - Forward

Channel (continued)

Pin	Signal	Return	In/	Functional Description
No.	Name	Pin	Out
34	NC	----	----	Not connected
35	+5V	----	O	HIGH during normal operation. Pulled up to
				+5V via 1.0Kohm
36	-SLIN	30	I	Not used

Note: In (I) and Out (O) refer to the direction of signal flow from the printer’s point of view.

Product Description Interfaces 25