• These sheets used in steps 6, 11, and 12 are not provided as accessories; please do not forget to order them with the developer.

  • Before replacing the developer, set SP3-701-024 to “1” and turn the main power switch OFF.
  • If you have to turn the power on again before replacing the part, execute the SP again before replacing the part.
  • After replacing the developer, turn the main power switch ON.

  • If you replace developer together with the development filters, first replace the developer, then replace the filters.

  1. Remove the development unit. (PCU/Development Unit)
  2. Remove the bearing (front) [A]. (E-ring x1)
  3. Pull the shaft toward the blue arrow shown below, then remove the pin [A] and the gear [B].
  4. Remove the gear [A]. (x1)
  5. Remove the bearing (rear) [A].
  6. Remove the development side seal and development case entrance seal [A] at each end.

  7. Lift up the development sleeve unit [A].

    • Do not touch or hold the development sleeve edge [A] when holding the sleeve unit. Otherwise, it may cause an injury.

  8. Remove the developer after turning the development unit upside down in the reverse direction of the development filter.

    • Rotate the gear to remove as much toner as you can.

  9. Stand the development unit up, and add new developer evenly across the width of the development unit while rotating the gear.

  10. Reassemble the development sleeve unit, gear and bearing.

    • The sheets for the development sleeve unit [A] must be under the sheets [B] for the development unit.

    Correct

    Wrong

  11. Wipe off the areas [A] indicated by the red-dashed line and paste new development case entrance seals to cover the blue-circled position.
    • These seals are part of the development seal set, which must be ordered together with the new developer.

    • The seal [A] for the front side is not the same shape as the one [B] for the rear side, as shown below. Be careful when you paste them.

  12. Paste the new development side seals [A] on the face of the development sleeve unit as shown below.
    • These seals are part of the development seal set, which must be ordered together with the new developer.

  13. Reassemble the PCU and development unit.
  14. Turn on the main power switch.
    The machine detects the new developer and starts the initial adjustment.