Maintenance > 5611. Gently wipe the LED head surface with a clean, lint free cloth.12. Finally, close the output tray and press down firmly at both sides so that the coverlatches closed.IMAGE DRUM REPLACEMENTThe printer contains four image drums: cyan, magenta, yellow and black.1. Press the cover release and open the printer’s output tray fully.CAUTION!Static sensitive devices, handle with care.WARNING!If the printer has been powered on, the fuser will be hot. This areais clearly labelled. Do not touch.