MFC-3820CN FAQs & Troubleshooting MFC-3820CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 08/05/2013 The keys on the control panel do not respond. 2. 30/03/2009 "PRINTING" is frozen on the display of my Brother machine. 3. 07/04/2006 My computer hangs when connect with a USB Cable. More FAQs Others FAQs & Troubleshooting