Question about Brother MFC 7840W Printer
The printer works with cartridge ink,not toner.You find the cartridge to replace on the rigth of the printer,pudrow out the little door and there you find the cartrige to replace.
Posted on Mar 23, 2011
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Posted on Jan 02, 2017
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Resetting the Toner Counter
The toner containers must be replaced when the printer displays the Low toner or Replace toner message which will be given depending on the color of toner. The Low toner message will be shown as a pre-warning that the toner is running out and the printer will soon stop, at that time showing Replace toner. If you replace the toner container before Replace toner is displayed, you must manually reset the toner counter as explained below. Note that if you reset the toner counter before the toner container is replaced, the subsequent toner warnings will not be indicated correctly.
I hope this is helpful,
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