3.If you are using more than one parallel port or more than one serial port, the computer must know which port is the primary port and which is the secondary port. See Chapter

2 for instructions on how to set the parallel and serial ports using the Setup program.

4.If your printer is properly set up but is still not functioning, test it from the MS-DOS level. When the screen displays the MS-DOS command prompt (such as C> or A>), hold down Shift and 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 for a parallel printer (or serial port for a serial printer). To do this, use the MS-DOS MODE command or the MENU program. 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 customizing may be 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. Appendix E describes these diagnostics checks. If the diagnostics test indicates an error, contact the place where you bought the printer.

D-26Troubleshooting