If you own a Brother MFC-7420N or MFC-7820N you have in all likelihood seen the message “Toner Life End” after installing a new toner cartridge. This message makes no sense at all for the simple reason that the toner cartridge you just put in is new so how can it be at it’s life’s end? We couldn’t find the fix in the manual which is kind of strange seeing as that is the first place you would think of looking. Well come to find out resetting “Toner Life End” error message is really simple, here are the basic steps you need to take to rid yourself of this annoying message.
STEP 1 – Open the front cover of your Brother MFC-7820N or Brother MFC-7420 so you can access the toner cartridge. (In some cases, you will need to remove your toner cartridge now for the next steps to work.)
STEP 2 – While the front cover is open and the machine is on, push the button “Options”.
STEP 3 – Push “Start”
STEP 4 – Then Quickly type “1″ and “0″ (like your typing the number 10). If you don’t perform this step quick enough you will have to start from the beginning. Don’t ask why, we don’t know and could not find an answer to that question even from Brother. We think they just like aggravating people.
STEP 5 – Wait until the machine show’s the term “Accepted” in the window.
STEP 6 – There is no step 6, your TN-350 toner cartridge is now reset and you can now print to your heart’s content.
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