Press the release button, completely open the front cover.

   Grasp the handles on the toner cartridge and pull to remove the cartridge from the machine.

   Pull the waste toner container out of the machine using its handle.

   Pull the imaging unit out of the machine using the groove on the front of the imaging unit.

   Take a new imaging unit out of its package. Remove the protective devices on both sides of the imaging unit and the paper protecting the surface of the imaging unit.

   Holding the groove on the front of the imaging unit, push imaging unit in to the machine.

   Insert the waste toner container into position and then push it to make sure that it is firmly seated in place.

   Slide the toner cartridge back into the machine.

   Close the front cover firmly.

   Turn the machine on.