User`s guide

Testing Serial Communication
Before you can print to the serial port, the printer, host, and
application must all communicate using the same serial port
settings. If your printer is replacing another printer, and if you are
using the same cable to connect it to the host, the host is probably
already configured correctly. However, if the host has not been
connected to a printer before, or if you are using a different cable,
use the information in this section to test the communication
between printer and host.
To test communication between your printer and host, first create
a short file that ejects a page from the printer and then send it to the
printer.
Creating the Test File To create the test file, type the following
commands at the DOS prompt (you can use either uppercase or
lowercase letters; however, you must type the PostScript
showpage operator in lowercase letters). The ↵ symbol means to
press the Enter key. To produce the ^D and ^Z, press and hold down
the Ctrl key while you type the appropriate letters (d and z). These
characters signify the end of the file and must always be included.
copy con printest.ps↵
showpage↵
^D^Z↵
Sending the Test File To test serial communication, type this
command at the DOS prompt to send the PRINTEST.PS file you
just created to the printer:
print printest.ps↵
If prompted for the name of the list device, type
com1↵
Chapter 3
3-16 Printer-Host Interface