This video explains why your Brother MFC Printer or HL-L3230cdw printer is not recognising the Toner in the printer and displays a "No Toner" Message despite your cartridges being Full or Half Full. Applies to L3750cdw L3770cdw L3710cw L3745cdw L3510cdw L3230cdw L3270cdw L3210cw L3730CDN . Tips/Gratitude (Copy & Paste -Don't Click!) http://www.paypal.me/fixitfast