MFC-3820CN FAQs & Troubleshooting MFC-3820CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 04/06/2015 One or more of my colors are not printing (blank). What can I do? 2. 04/06/2015 How can I remove horizontal white lines and other flaws from documents printed on my Fax/MFC? 3. 11/08/2005 Vertical streaks appear in my copies. Copy FAQs & Troubleshooting