1. Remove the upper right cover. (Upper Left Cover, Upper Right Cover)
  2. Cover the exposure glass [A] to protect it.
  3. Open the toner supply unit front cover.
  4. Remove the screws and clamps of the lower cover [A].
  5. Turn over the operation panel [A] and the lower cover [B] towards the scanner.

  6. Disconnect the USB connector and the grounding wire of the operation panel [A].

    • When you disconnect or connect the USB cable, hold the connector part of the cable.

  7. Remove the harnesses from the harness guide.

  8. Remove the lower cover [A].

  9. Remove the operation panel [A].

  10. Before you replace the operation panel, make sure that DIP switches 3 and 7 of the new operation panel are set to ON.

    • If the DIP switch settings are not correct, the machine will issue SC672.

  11. After replacing the operation panel, make sure that the latest version of the Smart Operation Panel firmware has been installed. For details, refer to "Updating the Smart Operation Panel" in the Smart Operation Panel manual.