Epson Stylus Pro 7500, Service Manual

Page: 24 / 274

EPSON Stylus Pro 7500 Revision A
Product Description Interfaces 24
NOTE: If it is active in the Low state, a ” /” is included with the signal name.
Table 1-14. Parallel Interface (Compatibility Mode)
Pin No.
Signal
Name
Return
Pin No.
Source Function
1 /STROBE 19
Center
Machine
Strobe pulse (When Low, data can be read.
When High, data cannot be received from the
PC.)
2 DATA1 20
Center
Machine
Data Signal
3 DATA2 21
Center
Machine
4 DATA3 22
Center
Machine
5 DATA4 23
Center
Machine
6 DATA5 24
Center
Machine
7 DATA6 25
Center
Machine
8 DATA7 26
Center
Machine
9 DATA8 27
Center
Machine
10 /ACKNLG 28 Printer
When Low, it indicates that data processing is
finished and preparation for reception of the
next data is completed.
11 BUSY 29 Printer
When High, it indicates that the state is such
that data reception is impossible.
12 PE 28 Printer
When High, it indicates that the printer has no
paper.
13 SLAC 28 Printer
Normally High Level 1.0 K ohms, pulled up to
5 v.
14 /AFXT 30
Center
Machine
Not used.
31 /INIT 30
Center
Machine At a Low pulse with a pulse width of 50_ or
greater, it is set in the initialization state.
32 /ERROR 29
Center
Machine
When Low, it indicates that the printer is in an
error state.
36 /SLIN 30 ----
Not used.
18 Logic H ---- ----
Normally High Level 3.9 K ohms, pulled up to
5 V.
35 +5V ---- ----
Normally High Level 1.0 K ohms, pulled up to
5 V.
17
Chassis
GND
---- ----
Chassis GND.
16,33,
19-30
GND ---- ---- Signal GND.
15,34 NC ---- ----
Not connected.
Table 1-14. Parallel Interface (Compatibility Mode)
Pin No.
Signal
Name
Return
Pin No.
Source Function