MFC-L8650CDW FAQs & Troubleshooting MFC-L8650CDW Not your product? Sort by: Updated Date Popularity 2 Results 1. 17/09/2014 When I send a fax from the machine, an error "not register." or "not registered." is displayed. 2. 08/07/2014 I am experiencing issues sending a fax. More FAQs Fax FAQs & Troubleshooting