MFC-790CW FAQs & Troubleshooting MFC-790CW Not your product? Sort by: Updated Date Popularity 3 Results 1. 11/19/2014 How do I load envelopes into my machine? 2. 04/26/2012 Load paper in the paper tray 3. 06/03/2010 How do I know which side up my photo paper should be in the tray? Product Setup FAQs & Troubleshooting