Brother MFC-9880 Owner's Manual page 155

6
Install the new toner cartridge into the drum unit until it clicks into place.
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
assembly.
8
Reinstall the drum unit into the machine and close the front cover.
Toner Cartridge
Corona Wire
Home Position (
Troubleshooting and Maintenance
Drum Unit
Tab
)
145