Epson Stylus PRO 7500 Service Manual page 24

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