Dell 5210n Mono Laser Printer User Manual page 37

9. Pull the charge roll to the right and out of the printer.
10. Align the blue tab on the left side of the charge roll with its hole in the arm marked with the corresponding blue arrow, and insert it. Pull the charge roll
to the left.
11. Lift the right side of the charge roll and insert it into its hole.
12. Remove the packaging from the charge roll.