MFC-640CW FAQs & Troubleshooting MFC-640CW Not your product? Sort by: Updated Date Popularity 3 Results 1. 12/16/2014 Send a fax without scanning the documents into memory. 2. 08/29/2006 Can I confirm that the FAX was sent correctly? 3. 12/27/2005 How do I send (broadcast) a fax to more than one number? Fax FAQs & Troubleshooting