1. Remove the rear cover. (Rear Cover)
  2. Remove the right rear cover. (Right Rear Cover)
  3. Remove the drive cooling fan (FAN9). (Only for IM C6000/C5500/C4500) (Drive Cooling Fan (FAN9) (IM C6000/C5500/C4500 Only))
  4. Remove the toner supply cooling fan unit [A].
  5. Remove the Toner supply cooling fan (FAN5) [A].