If your Brother DCP-1510 or DCP-1512 shows “Cartridge Error. Put the Toner Cartridge back in” after fitting a new toner, the machine has not detected the new cartridge. This guide clears the error and manually resets the toner, just like a normal cartridge replacement.
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After you replace the drum unit on the Brother DCP-L2510D or MFC-L2712DW, the printer shows a drum warning until you reset the drum counter. This Brother DCP-L2510D drum reset guide shows the exact key sequence — the same steps also work on the MFC-L2712DW...
