1. Remove the right lower cover. (Right Lower Cover)
  2. Remove the bracket [A].
  3. Disconnect the USB connector [A] of the operation panel.
  4. IM 600SRF: Disconnect the connector [A] and release the harness from the harness guide [B].

  5. Disconnect the three flat cables and three connectors.

    • Make sure to open the flap before disconnecting the flat cables [A] [B], as shown in the following pictures. Otherwise, the connector may be damaged.
    • When disconnecting the flat cable [A], pull it out in the direction of the arrow.

  6. Release the flat cable and harness from the harness guides.
  7. IM 600SRF: Remove the cover [A].

  8. Remove the six screws from the controller box [A].

    • The screw [B] is a tapping screw. Be careful not to use the wrong screw when installing the controller box.

  9. IM 600SRF: Release the harnesses [A] and FFC [B] from the cable guides.

  10. IM 550F/600F: Release the FFC [A] from the cable guides.

  11. Release the hook [A], and then remove the controller box [B] by rotating it counter-clockwise.

    • When installing the controller box [A], make sure to secure the harness and flat cable to the harness guides, as shown below.
    • When installing the bracket [A] of the controller box [B], do not interpose the harness and the flat cable between the bracket and the controller box.