MFC-5840CN FAQs & Troubleshooting MFC-5840CN Not your product? Sort by: Updated Date Popularity 2 Results 1. 08/24/2006 Can I reduce the size of a received fax on this machine? 2. 08/22/2006 Can I still receive faxes or calls when the machine is switched off? Fax FAQs & Troubleshooting