Brother Copier/Printer MFC-9970CDW - Manual (Page 87)

Routine maintenance
71
A
e
Push to release the latches of the
corona wire cover (1), and then open the
cover.
f
Clean the corona wires inside the drum
unit by gently sliding the green tabs from
left to right and right to left 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.
1
1