Konica Minolta bizhub 552 Replacement Instructions Manual page 31

Drum unit, Ozone filter, Toner filter replacement instructions
[1]
[1]
9. Proceed to replace the ozone filter.
See P.6
7. Reinstall the waste toner box [1].
A2WUF2C003DA
8. Close the lower front door [1].
A2WUF2C004DA
5