1. Remove the left cover (Printer models: Left Cover, MF models: Left Cover).
  2. Remove the main board (Main Board (Printer Models)).
  3. For MF models, remove the main board bracket (FCU (Only for Fax Models)).
  4. Remove the harness guide plate [A].
  5. Release the four hooks, and remove the timing belt cover [A].
  6. Remove the gear [B] and loosen the timing belt [C].

  7. Remove the drive unit [A].
    Printer models:

    MF models:

    When re-installing the harness guide plate, first set the stopper of the relay clutch [A] over the projection.

    Make sure that the stoppers of the clutches are set over projections on the harness guide plate.