Lexmark CX725
Open the toner door.
Remove the two screws (A) securing the toner door on the front side of the printer.
Remove the two screws (B) securing the toner door on the rear side the printer, and then remove the toner door.
Remove and insert a new toner cartridge when you continue to see faded prints.
Prevent excess toner powder from falling freely into the printer. Change the waste toner bottle when it is full.