1. Remove the controller board. (Controller Board (Printer Model))
  2. Remove the upper cover. (Upper Cover (Printer))

  3. Release the two hooks to remove the harness guide [A].

    Remove the harness guide tab from the right side. Check the position of the harness guide tab in the photo below.

  4. Disconnect the FFC from the BCU [A], and then remove the harness guide [B].

  5. Remove the BCU [A] with the bracket.

    When attaching the BCU, fasten the screws in the following order.