Kyocera FS-C1020MFP - Manual (Page 438)

To prevent the waste toner bottle touching the intermediate transfer unit (the white area in the
illustration below), do not lift the bottle while pulling it out.
Close the bottle cap.
Hold the center of the new waste toner bottle, and then carefully insert it halfway into
the machine body.
Leave the bottle cap open.
To prevent the waste toner bottle touching the intermediate transfer unit (the white area in the
illustration below), do not lift the bottle while inserting it.