Brother MFC 8220 - Manual (Page 168)

12 - 29 TROUBLESHOOTING AND ROUTINE MAINTENANCE
7
Clean the primary corona wire inside the drum unit by gently
sliding the blue tab from right to left several times. Return the
blue tab to the Home position (
▼
) before reinstalling the drum
unit and toner cartridge assembly.
8
Reinstall the drum unit and toner cartridge assembly and close
the front cover.
Corona Wire
Tab
Home Position(
▼)