Brother Backup Battery Owner's Manual page 135

4
Unpack the new toner cartridge. Place the used toner cartridge into the aluminium bag and
discard it according to local regulations.
New Toner
Cartridge
Aluminum
Bag
• Wait to unpack the toner cartridge until immediately before you install it
into the machine. If a toner cartridge is left unpacked for a long period of
time, the toner life is shortened.
5
Gently rock the toner cartridge from side to side five or six times, and then remove the protective
seal.
Toner
Cartridge
6
Slide the new toner cartridge into the opening on the right side of the drum unit. To ensure that
the toner cartridge and the drum unit fit together correctly, make sure that the toner cartridge
guide bar is exactly aligned with the guide slot in the drum unit.
Cartridge
Used Toner
Cartridge
Drum
Unit
Toner
Troubleshooting and Maintenance
125