MFC-J3720 FAQs & Troubleshooting MFC-J3720 Not your product? Sort by: Updated Date Popularity 2 Results 1. 23/05/2018 Forward a fax to another fax machine when my machine has a mechanical problem. 2. 08/08/2013 Transfer faxes to the PC when my machine has a mechanical issue. Fax FAQs & Troubleshooting