HP LaserJet Enterprise 500 Color MFP M575 - Manual (Page 85)

5. Insert the bottom of the new unit into the
product first, and then push the top of the unit
until it clicks into place.
6. Close the front door.
NOTE: If the toner collection unit is not
installed correctly, the front door does not
close completely.
To recycle the used toner collection unit, follow the instructions included with the new toner collection
unit.
ENWW Toner collection unit 69