MFC-640CW FAQs & Troubleshooting MFC-640CW Not your product? Sort by: Updated Date Popularity 4 Results 1. 01/27/2014 How do I store received faxes in memory? 2. 08/29/2006 Can I reduce the size of a received fax on this machine? 3. 08/22/2006 Can I still receive faxes or calls when the machine is switched off? 4. 03/16/2006 How do I print the received faxes that are stored in memory? (Fax Storage) Fax FAQs & Troubleshooting