These are possible solutions. Try one or more of the following:
Turn the printer off, wait for about 10 seconds, and then turn the printer on.
Turn the printer off.
Unplug the printer from the wall outlet.
Check the connection between the option and the printer.
Print a menu settings page and check to see if the option is listed in the Installed Options list. If the option is not listed, reinstall it.
From the program you are using, select the option. Mac OS 9 users should make sure the printer is set up in the Chooser.
These are possible solutions. Try one or more of the following:
Pull the tray completely out.
Check for paper jams or misfeeds.
Make sure the guides are aligned against the edges of the paper.
Insert the tray.
Turn the printer off, wait about 10 seconds, and then turn the printer on.