1. Remove the ARDF from the main machine.

  2. Place the ARDF on a flat surface, and place it so that the hinge does not hit against that surface.

    • Be careful not to scratch the scanning area [A] (guide plate and mylar).
    • Be careful not to hook the actuator [B]. (It is a movable actuator; it is stored in the ARDF when you push it and it comes back because of a spring.)

  3. Remove the rear cover of the ARDF.
  4. Remove the following parts.
    • Clamp
    • Harness
    • Connectors [A] (×3)
    • Screw [B] (×1)
  5. Remove the screws [A] and spring [B] of the feed motor bracket, and remove the feed motor unit. (×2, spring ×1)
  6. Remove the resin ring [A] and flanges, and remove the timing belt. Then, remove the reverse torque limiter [B] from the shaft.
  7. Disconnect the link [A] of the junction gate, and remove the E-ring [B] of the fixing shaft. (×1)
  8. Loosen the screw [A] of the belt tension unit and remove the spring [B]. (×1, spring ×1)
  9. Remove the screws [A] of the motor bracket, and remove the transport motor unit. (×2)
  10. Remove the belt tension unit and screw [A], and pull out the hinge fixing shaft [B] (do not remove the E-ring on the fixing shaft side).
  11. Remove the step screws and springs [A] of the hinge, and remove the hinge [B]. (×2, spring ×2)
    Note: Grease is applied to the step screws.
  12. Insert the left hinge with a damper [A] and insert the hinge fixing shaft [B].
  13. Fix the hinge fixing shaft with an E-ring, and insert the link [B] of the junction gate. (×1)
    After inserting the link, pull it slightly to check that it does not fall out.
  14. Attach the step screws and springs of the hinge. After attaching them, push the screw top to check that the screws are pushed down.
    When the screws do not move, the step screws may be fixed with the plate stay. Loosen and fix the screws again.
  15. Attach the reverse torque limiter [A].
    Put the torque limiter on the shaft, hook the timing belt, attach the flange, and fix it with the resin ring.
  16. Attach the transport motor unit. (×2)
    Attach the bracket to the plate, hook the timing belt onto the motor pulley, and hook the spring.
    Do not fix the screws [A] completely, so that the motor unit can move left and right.
  17. Rotate the white gear [A] by hand to warm up the timing belt. (×2)
    Fix the screws [B] of the feed motor bracket completely, which were attached in step 16.
    (The picture has been taken after attaching the harness guide.)
  18. Attach the belt tension unit. Do not fix the screw [A] completely. Move the cutout of the belt tension unit to fit the hole [B] in the rear plate. (×1)
  19. Hook the belt [A] onto the pulley of the transport motor unit, and insert the shaft into the hole in the rear plate, shown in step 18.
  20. Fix the two screws [A] of the transport motor unit, and hook the spring [B] of the belt tension unit. Do not fix the screw [C] of the belt tension completely. (×3, spring×1)
  21. Attach the harness guide and fix it with the screw [A]. (×1)
    The harness [B] of the clutch should be passed as shown below.
  22. Insert the connector of the motor and the connector of the cooling fan, and fix the harness with the clamp. (×2, ×1)