Brother HL-6050DN - Manual (Page 122)

ROUTINE MAINTENANCE 5 - 7
8
Clean the primary corona wire inside the drum unit by gently sliding the blue tab from right to left
and left to right several times. Return the tab to the home position (
▲ ) before you put the drum unit
back in the printer. If you do not, printed pages may have a vertical stripe.
Figure 5-10
9
Put the drum unit assembly back in the printer. Close the front cover of the printer.
Figure 5-11