Brother HL-3400CN Series User Manual page 161

USER'S GUIDE
Replacing the Toner Cartridges
Fig. 5-2 Rocking Cartridge and Removing the Protective Cover
5-4
!
Caution
When replacing the Toner Cartridges, handle them carefully so that toner
does not spill.
Note
To ensure optimum print quality, use genuine Brother toner cartridges.
Third party toner cartridges may not work in your printer.
To obtain genuine Brother supplies, consult the dealer where you
purchased the printer.
To replace the toner cartridge(s), follow these steps:
1. Open the Front Cover of the printer.
2 Remove the Toner Cartridge(s) which has run out of toner. Pull the
Toner Cartridge out slightly with one hand, then hold the Toner
Cartridge with both hands and pull it out of the printer.
3. Take the new toner cartridge out of the box. Remove the tape labeled
'REMOVE'.
Fig. 5-1 Remove the Tape
4. After rocking each new Toner Cartridge 3 to 4 times from side to side,
remove the orange protective cover from the new Toner Cartridge.