Epson 10020 - Manual (Page 129)

4. 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 A> or C>) is showing on the
screen, press Shift 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 details.
5. Many application programs (such as word processors) must
be set up properly before they can use a printer. Check your
program manual to see what customization is required.
6. 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 D 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 properly,
check the following:
1.
2.
Is the option card installed correctly? Check the
installation procedure described in Chapter 4 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.
Did you set the necessary DIP switches or jumpers on the
option card? See your option card manual for instructions.
Troubleshooting 5-13