1. Remove:
    [A] Rear scale (x3)
    [B] Left cover (x2)
  2. Remove:
    [A] Exposure glass
    [B] Front "L" cover
  3. Remove the left stay (x3).
  4. Remove the ADF (x2).
  5. Lay the ADF on the floor.
  6. Remove the rear flat plate (x5).
  7. Disconnect the sensor [A] (x1, x1, x4).