384Chapter 9 Replacing expendablesInstall fine filterNote:When replacing the fine filter, toner can enter the toner dust sensor. This is why thetoner dust sensor must be cleaned after replacing the fine filter (see Cleaning thetoner dust sensor on page 279).2.[529]Reinsert fine filter box withboth hands.3.[530]Push lever to the left of the finefilter box up to lock the filterhousing.Proceed as follows:
