Brother MFC-9870 Owner's Manual page 139

T R O U B L E S H O O T I N G A N D M A I N T E N A N C E
WARNING
Remove the drum unit and toner cartridge assembly. Leave the toner
cartridge installed in the drum unit.
6
Place the drum unit and toner cartridge assembly into the plastic bag
and seal the bag completely.
7
Close the front cover. Put the front output bin extension into position.
131