Kyocera Mita FS-1900N Operation Manual page 142

3
Slowly pull out and then push back in the charger unit at least 5
times. It is easier to pull out the charger unit for the first time if it is
raised slightly, as shown in the figure.
This cleans grid part underneath the charger unit.
Charger Unit
4
Remove the grid cleaner from the printer and dispose of it. The grid
cleaner is not re-usable.
(3)
3-11
Cleaning
(1)
(2)