1. Remove the lower left cover. (Lower Left Cover)
  2. Remove the front cover. (Front Cover)
  3. Remove the bypass tray. (Bypass Paper Feed Roller)
  4. Rotate the cam (a) inside the main unit to the position in the figure.
  5. Disconnect eight connectors (b) from the engine relay PCB (PCB21) (a).
  6. Release the wire (b) from five hooks (a).
  7. Remove two screws (a)(M3x12).
  8. Lift up the bypass paper feed drive unit (b) to release the lower two hooks (c).
  9. Detach the bypass paper feed drive unit (b).
  10. Check the bypass paper feed drive unit and clean or replace it if necessary.
  11. Reattach the parts in the original position.