MFC-J4340DW(XL) FAQs & Troubleshooting MFC-J4340DW(XL) Not your product? Sort by: Updated Date Popularity 2 Results 1. 12/14/2021 Telephone Line Interference/VoIP. 2. 05/14/2021 I am experiencing issues sending a fax. Fax FAQs & Troubleshooting