1. Set the saddle clamp on the double-feed sensor board.
  2. At the back of the machine, remove the cap and screw from the rear cover.
  3. Raise the feed cover, and then remove the screw from the top edge of the rear cover.
  4. Press the tab [A] on the end of the rear cover to release the cover, and then rotate the cover [B] down slowly.
  5. Disconnect the bottom tabs, and then remove the rear cover.
  6. At the front, raise the ADF slightly.
  7. Disconnect the top edge of the front cover. The embossed arrow [A] shows which direction to slide the cover to unlock the tabs..
  8. Push the front cover [A] to the left, and then remove it [B].
  9. Lower the ADF.