Amazon.com: Brother DR310CL Drum Unit for MFC-9460CDN, MFC-9560CDW and MFC- 9970CDW and Brother TN315BK Toner Cartridge for Brother Laser Printer - Retail Packaging - Black Bundle : Office Products
Brother MFC9970CDW Support
How to reset Drum /Toner Brother MFC-9970 printer /how to enter Hidden reset menu - YouTube
How to reset the toner cartridges on Brother MFC-9460CDN, MFC-9560CDW, MFC-9970CDW Printer - YouTube