Brother HL 2270DW - Manual (Page 79)

Routine Maintenance
75
4
h Clean the primary corona wire inside the drum unit by gently sliding the green tab from right to left and
left to right several times.
Note
Be sure to return the tab to the home position (a) (1). If you do not, printed pages may have a vertical stripe.
i Put the drum unit and toner cartridge assembly back into the machine. Close the front cover.
Note
DO NOT turn off the machine's power switch or open the front cover until the Ready LED lights up.
1