MFC-J4540DW(XL) FAQs & Troubleshooting MFC-J4540DW(XL) Not your product? Sort by: Updated Date Popularity 2 Results 1. 03/12/2021 I am experiencing issues sending a fax. 2. 16/05/2019 Telephone Line Interference/VoIP. Fax FAQs & Troubleshooting