Epson Endeavor - Manual (Page 152)

If it does not, you may need to change the internal setting
of the computer’s parallel port for a parallel printer (or
serial port for a serial printer). To do this, use the MS-DOS
MODE or SETMODE command. See your printer manual
and MS-DOS documentation 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 customizing may
be required.
6. If you are using an application program that requires a
printer driver, make sure the correct driver is installed. See
your application program manual for instructions. Also see
your printer manual for additional instructions on using
your printer with application programs.
7. Try running the Parallel port diagnostic test if you have a
parallel printer, or the Serial port test if you have a serial
printer. You can also test a dot-matrix printer, if you have
one. Chapter 4 describes these tests.
Option Card Problems
If you install an option card and it does not function properly,
check the following:
1. Is the option card installed correctly? Make sure it is
well-seated in its slot. Check the installation procedure
described in Chapter 2 and also see the instructions that
came with the card.
2. Did you set the necessary DIP switches or jumpers on the
option card? See the card’s manual for instructions.
3. Did you set the necessary jumpers on the main system
board? See Chapter 2 for more information.
Troubleshooting 6-23