> On laserjets you can hold down the online button
while powering up
the
> printer. Hold until it starts to print and it
provides a status page
and a graphics
test page. Give it a try.
There are no buttons on an Apple LaserWriter (Plus). Buttons
are an HP LaserJet thing.
On the Canon CX Engine, wasn't there a button on the side panel that
would print a set of parallel lines independent of the controller?