Brother MFC-8500 Owner's Manual page 203

WARNING
Just after you use the machine, some internal parts of the machine will be
extremely HOT! So, never touch the shaded parts shown in the illustration.
1
Open the front cover and pull out the drum unit.
Place the drum unit on a drop cloth or large piece of disposable paper to avoid
spilling and scattering the toner.
2
Hold down the lock lever on the right as you pull the toner cartridge out of the
drum unit assembly.
Caution
Handle the toner cartridge carefully. If toner scatters on your hands or clothes,
immediately wipe it off or wash it with cold water.
3
Unpack the new toner cartridge. Place the used toner cartridge into the
aluminum bag and discard it according to local regulations.
22 - 19
T R O U B L E S H O O T I N G A N D R O U T I N E M A I N T E N A N C E
HOT!
Lock
Lever