After replacing a toner on a client's Brother MFC-7320 printer, they still had an error message saying "Toner life end" although the toner inserted was brand new. OK, it was a noname toner (not Brother's original) but still, new.
How to get rid of the "Toner life end" message on Brother MFC-7320 and get the printer working? You can even do this when you actually run to the end of a toner cartridge and keep on printing. People report that this method gets them more out of their toner cartridges.
1. Open the printer cover where you insert the toner
2. The display says "cover open", click Clear
3. Click * on the numpad nad then 00. The display says now Accept and Close cover.
4. Close the cover and enjoy printing.
1. Open cover
2. Click "Clear"
3. Select "Replace drum"
4. OK and close cover