MFC-790CW FAQs & Troubleshooting MFC-790CW Not your product? Sort by: Updated Date Popularity 2 Results 1. 17.05.2013 Print using only the black ink cartridge when the Color cartridges have run out. 2. 09.05.2013 Print on both sides of the page. (Manual 2-sided/Duplex Printing) Print FAQs & Troubleshooting