2123
Cause
Rear tray paper information registration is incomplete. Or, the paper may have been exchanged while the printer is turned off.
What to Do
If the screen similar to the following is displayed on the printer's LCD, the rear tray paper information registration is incomplete.
If the paper loaded in the rear tray matches the paper information displayed on the printer's LCD, select OK using the buttons and press the printer's OK button.
If they do not match, select Change using the buttons and press the printer's OK button. Then register the correct paper information.