MFC-3320CN FAQs & Troubleshooting MFC-3320CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/28/2013 The keys on the control panel do not respond. 2. 03/27/2009 "PRINTING" is frozen on the display of my Brother machine. How do I clear it? 3. 06/26/2007 Why does my computer become unresponsive when using the USB interface to connect the Brother machine? Others FAQs & Troubleshooting