1. Remove the ADF rear cover. (ADF Rear Cover)
  2. Remove the ADF front cover. (ADF Front Cover)
  3. Remove the original feed unit. (Original Feed Unit)

  4. Remove the ADF inner cover [A].

     

    Lift the back of the ADF inner cover [A] while swinging up the original tray [B], and then slide the ADF inner cover toward the back of the ADF unit.

  5. Disconnect the FFC [A].
  6. Release the hook while swinging up the original tray [A], and then remove the harness guide [B].
  7. Remove the gear bracket [A].

  8. Remove the two gears [A].

    Do not remove the gear [B], to prevent the inner pin [C] from dropping into the machine.

  9. Open the ADF unit [A] while holding the gear [B] by hand, and open the scanning guide plate (rear side) [C] by pulling the release lever [D].

    • Hold the gear [B]. It is not fixed, and may drop into the machine.
    • Open the scanning guide plate (rear side) [C] before replacing the CIS unit. Otherwise, the surface could be damaged.

  10. Pull out the CIS unit [A] from the ADF unit.

    The CIS unit can be easily removed by pushing it from behind.

    When reattaching the ADF inner cover, make sure that the shaft [A] fits into the groove (this is the shaft of the lock lever for the friction pad on the back side of the cover). If the shaft does not fit, the ADF top cover will not be closed.

    When reattaching the ADF inner cover [A], move it under the coupling shaft (marked by the dashed circle) of the original feed unit, and then you can install the ADF inner cover correctly.