MFC-J491DW FAQs & Troubleshooting MFC-J491DW Not your product? Sort by: Updated Date Popularity 3 Results 1. 12/14/2021 Telephone Line Interference/VoIP. 2. 02/11/2021 I am having an issue receiving faxes. 3. 05/29/2013 I cannot receive a color fax. Fax FAQs & Troubleshooting