DELL C3760dn User Manual

13  Turn the waste toner box lock lever 90-degrees clockwise to lock the waste toner box. 

14  Close the right side cover. 

15  Close the rear cover. 

To prevent deterioration of printing quality due to stains inside the printer, clean inside the printer regularly by using 

the cleaning rod whenever you replace drum cartridges. 

1  Open the right side cover. 

Maintaining Your Printer