The paper in the tray specified on the front panel is low. Load paper in the tray soon. On the front panel of the printer, press the i button to view information about the front panel message.
If you want to change the type or size of the paper in the tray:
Remove the remaining paper.
Insert the new type or size of paper.
When the Confirm Tray # Paper (where # is the number of the tray specified on the front panel) message displays, verify that the paper size and type match the size and type of the paper in the tray.
If the paper size and type in the message match the size and type of the paper in the tray, press the OK button.
If the paper size and type in the message do not match the size and type of the paper in the tray, select the correct size and type on the front panel.