Brother HL 2270DW - Manual (Page 34)

Consumables
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Consumables
When the time comes to replace consumable items, an error will be indicated by the LED's on the control panel.
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
For replacing the consumable items, See Replacing consumable items in the User’s Guide.