Apple LaserWriter 12/640 PS - Manual (Page 243)

IBM PC or compatible troubleshooting
If you are using the LaserWriter 12/640 PS from an IBM PC or compatible
computer, use this section for troubleshooting tips.
A message on the screen says the printer can’t print.
If you get such a message, try the following steps.
m Make sure that the printer is turned on.
m Check the network or parallel cables.
m Make sure that the PostScript printer driver has been installed as described
in Chapter 3.
Nothing is printed; no paper comes out of the printer.
If you don’t get any response from the printer when you try to print a
document, try the following steps:
m Check the Installed Printers list to see that your printer is selected. See
Chapter 7 for details about installing and selecting printer driver options.
m Try printing the document again, but choose Download PostScript Error
Handling in the Printer Setup PostScript Options dialog box.
m Check the Paper Out light. If it is on, add paper and replace the paper
cassette. If it is blinking, make sure the paper cassette is securely in place.
m Check for a paper jam as described in Chapter 11.
m Check the printer cables.
m Check the position of the port communication switch as described in
“Adjusting Communication Settings” in Chapter 1. The port may have been
turned off or the Interpreter settings may not be correct.
m Reset the communications settings to their factory default values by setting
the communication switch to the Reset (out) position. Turn the printer off
and back on again. Set the communication switch to the Normal (in)
position.
m Turn the printer off and back on. Check the startup page.
m Reinstall the printer driver. See Chapter 3 for details about installing the
printer driver.
243 Fixing Other Problems