MFC-9140CDN FAQs & Troubleshooting MFC-9140CDN Not your product? Sort by: Updated Date Popularity 2 Results 1. 18/06/2015 I am experiencing issues sending a fax. 2. 27/03/2013 When I send a fax from the machine, an error "not register." or "not registered." is displayed. English Fax FAQs & Troubleshooting