Cause

Feed slot cover of rear tray is open and cassette is not inserted.

What to Do

Close the feed slot cover, insert the cassette, and then press the printer's OK button to cancel the error.

 Once the feed slot cover is closed, the screen for setting rear tray paper information appears. Set paper information for the paper in the rear tray.

 Once the cassette is inserted, the screen for setting cassette paper information appears. Set paper information for the paper in the cassette.

 To cancel printing, press the printer's Stop  button.

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