1. Pull out the toner bottle.
  2. Remove the paper exit lower cover. (Paper Exit Lower Cover)
  3. Remove the upper inner cover. (Upper Inner Cover)
  4. Remove the development exhaust fan. (Development Exhaust Fan)
  5. Remove the duct [A].
  6. Remove the brackets [A] and [B].
  7. Remove the screws on the toner supply housing [A].
  8. Remove the toner supply housing [A].