Epson Apex 20020 - Manual (Page 147)

2. Check the printer manual for the printer’s correct DIP
switch or control panel settings. These settings help a
printer communicate properly with the computer.
3. If your printer is properly set up but is still not functioning,
test it from the MS-DOS level. When the MS-DOS
command prompt (such as
C
: \>) is showing on the
screen, press
PrtSc.
This should print the contents of the
screen on your printer.
If it does not, you may need to change the internal setting
of the computer’s parallel port (or serial port for a serial
printer). To make this change, use the MS-DOS MODE
command or the MENU utility. See your printer manual
and the MS-DOS Reference Manual for more information.
4. Many application programs (such as word processors) must
be set up properly before they can use a printer. Check your
application program manual to see what customization is
required.
5. Try running the Parallel Port (Printer Interface) Check if
you have a parallel printer, or the Serial Port (RS-232C)
Check if you have a serial printer. These diagnostics checks
are described in Appendix C of this manual. If the
diagnostics test indicates an error, contact the place where
you bought the printer.
Option Card Problems
If you install an option card and it is not functioning correctly,
check the following:
1. Is the option card installed correctly? Check the
installation procedure described in Chapter 5 and also see
the instructions that come with the option card. The most
common problem with option cards is a loose connection.
Make sure the option card is well-seated in its slot.
Troubleshooting 6-13