MFC-L3770CDW FAQs & Troubleshooting MFC-L3770CDW Not your product? Sort by: Updated Date Popularity 2 Results 1. 12/20/2018 Scan Using Secure Function Lock 3.0 2. 12/14/2017 Scan multiple pages into one file instead of each scan being saved as a separate file. Scan FAQs & Troubleshooting