TA Triumph-Adler LP 4024 - Manual (Page 159)

Cleaning
2-11
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.
4
Remove the grid cleaner from the printer and dispose of it. The grid
cleaner is not re-usable.
Charger Unit
(1)
(2)
(3)