MFC-3340CN FAQs & Troubleshooting MFC-3340CN Not your product? Sort by: Updated Date Popularity 4 Results 1. 20/08/2020 My Brother machine has no power. What can I do? 2. 08/05/2013 The keys on the control panel do not respond. 3. 28/09/2012 How do I clear Machine Error 46? 4. 07/04/2006 My computer hangs when connect with a USB Cable. More FAQs Others FAQs & Troubleshooting