Brother MFC-8440 B - Manual (Page 192)

12 - 31 TROUBLESHOOTING AND ROUTINE MAINTENANCE
3
Unpack the new toner cartridge. Place the used toner cartridge
into the aluminum bag and discard it according to local
regulations.
Caution
■
Wait to unpack the toner cartridge until immediately before you
install it in the MFC. If a toner cartridge is left unpacked for a long
period of time, the toner life is shortened.
■
Brother strongly recommends that you do not refill the toner
cartridge provided with your MFC. We also strongly recommend
that you continue to use only Genuine Brother Brand
replacement toner cartridges (TN-540 or TN-570). Using or
attempting to use potentially incompatible toner and/or toner
cartridges in your MFC may cause damage to the machine itself
and/or it may result in unsatisfactory print quality. Our warranty
coverage does not apply to any problem that was caused by the
use of unauthorized third party toner and toner cartridges. To
protect your investment and guarantee your print quality please
continue to replace consumed toner cartridges with only Genuine
Brother Branded Supplies.
4
Gently rock the toner cartridge from side to side five or six times
to distribute the toner evenly inside the cartridge.