MFC-J6720DW FAQs & Troubleshooting MFC-J6720DW Not your product? Sort by: Updated Date Popularity 3 Results 1. 06/17/2014 Change the quality of the faxes I send (Fax Resolution). 2. 04/16/2014 Send a fax 3. 07/23/2013 Confirm that a FAX I sent was received correctly. Fax FAQs & Troubleshooting