Brother MFC 7840W - Manual (Page 49)

Consumables and Options
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Consumables
When the time comes to replace consumable items, an error message will be indicated on the LCD.
For more information about the consumables for your machine, visit us at http://solutions.brother.com/ or contact
your local Brother reseller.
Toner Cartridge Drum Unit
TN-330/TN-360 DR-360