170 7 Maintenance
6. Remove the new drum cartridge out of the 
box and take off the protective sheet.
Important
• Do not touch the surface of the intermediate transfer 
belt (black portion on the bottom) or the photosensitive 
drum (blue portion on the back side). Scratches, dirt, 
or oil from your hands can decrease print quality.
7. Hold the drum cartridge by the handles with 
both hands. Gently insert the drum 
cartridge into the printer, aligning the 
projections marked with arrows on both 
sides with the arrow labels on the printer.
8. Close the output tray cover and then the 
front cover.
Important
• When closing the covers, be careful not to get your 
fingers caught between the covers and the printer.