Olivetti d-COPIA 3500MF Operation Manual page 455

Separator
Clean the separator regularly (at least monthly) to ensure optimum output quality.
1
Open the front cover.
2
Remove the cleaning brush (blue colored).
3
Pull up the lever and open the right cover 1.
4
As shown in the figure, clean dirt from the separator
by moving the brush from side to side along the
separator.
11-19
Maintenance
11