Remove, inspect, and clean the ITB unit [A].
- Remove the ITB cleaning unit. (ITB Cleaning Unit)
Clean the raised edge [A].
The entrance seals are fragile. Always work carefully to avoid damaging these seals. If the seals are damaged or become loose, this could cause toner scattering.
Use a vacuum cleaner to remove paper dust and toner from the edge of the cleaning blade.
Work carefully to avoid nicking the edge of the cleaning blade.
When you re-install the unit, check the side seals on each end of the unit. Confirm that they are tight and undamaged.