6Close the top door.
Replacing a developer unit
Replace a developer unit when a print quality defect occurs or when damage occurs to the printer.
Note: When a developer unit is replaced, you must manually calibrate the color. For more information, see “Color misregistration” on page 149.
1Grasp the front door at the side handholds, and then pull it toward you to open it.
2Open the top door.
Maintaining the printer