Use the printer control panel buttons when you need to:
Take the printer off-line and put it back on-line.
Set up the printing environment so the computer can communicate with the host
computer or solve a problem causing a printer error.
Select test prints so you can visually check the operation of the printer and print a
list of the configuration settings.
Reset the printer to the factory defaults.
Print a list of printer resident fonts or permanently downloaded soft fonts.
Make other print selection your software application does not allow.
The printer must be off-line before you can use buttons other than Go on the
printer control panel. If an invalid key is pressed, the control panel will
display the message KEY NOT VALID as a warning.