1. Remove the front edge cover (x3).
  2. Remove the charge corona unit. (PCDU Removal)
  3. Remove the front cover plate [A] (x1).
  4. Disconnect the rear shield plate [B] (x1).
  5. Slowly, remove the shield plate [A]. The tines of the plate are connected to the grid.
  6. Disconnect the grid [B] on the other end of the unit.
  7. Remove the grid.
  8. Turn the unit over, and then remove screw [A] at the front (x1).
  9. Turn the unit over again, and then remove the cap [B].
  10. Turn the unit over and remove the ground plate [A] at the rear.
  11. Turn the unit over again, and then remove the cap [B].
  12. Pull straight up to release, and then remove the sponge bracket.
  13. At the front, disconnect the charge corona wires [A] (x3).

  14. At the rear [B], disconnect the wires from the posts.

    • The charge corona wires are very brittle and break easily.
    • Remove and handle them carefully.
    • Avoid touching the wires with bare hands.

  15. Disconnect each wire from the rubber brackets [A] and [B].
  16. Remove each rubber bracket (x6).
  17. Each cleaning pad bracket is held in place by a snap ring.
  18. Pull off a snap ring to disconnect each cleaning pad bracket (x3).

  19. Remove each cleaning pad bracket.
  20. When you install the unit in the machine, be sure to align the charge corona unit on its left plate and rail [A] before you push it into the machine [B].

After Charge Corona Wire Replacement

  1. After re-assembling the machine, open the left and front doors.
  2. Turn the machine on.
  3. Enter the SP mode and do SP7622-013 to 017 to reset the counters.