• If the optional counter interface unit is installed, remove the optional counter interface unit before removing the controller box.

  1. Remove the rear cover. (Rear Cover)
  2. Remove the left cover. (Left Cover)
  3. Remove the right rear cover. (Right Rear Cover)
  4. Remove the scanner rear cover [A] and scanner rear small cover [B].

  5. Release two screws and two tabs for attaching the relay board [A] and FFC, to release the FFC.

  6. Remove the FFC fixing bracket [A] on the back side of the FFC.

    Remove the FFC fixing bracket while turning it counterclockwise and releasing the tab.


  7. Release the clamp of the harness to the ADF [A].
  8. Remove the grounding plate [A].
  9. Remove the controller box cover [A] with the HDD [B].
  10. Disconnect all the connectors on the BiCU [A].
    Remove the clamps to make room for removal of the BiCU [A].
  11. Do the following steps:
    • Remove the grounding wire [A] and connector [B] from the left side of the controller box.
    • Remove the harness guide [C] while releasing the harnesses on it.
  12. Remove the brackets ([A] and [B]), and two screws from the right side of the controller box.
  13. Remove the controller box [A].