MFC-L3770CDW FAQs & Troubleshooting MFC-L3770CDW Not your product? Sort by: Updated Date Popularity 5 Results 1. 04/01/2024 (Video) Unpack your Brother machine 2. 04/01/2024 (Video) Connect telephone line and power cords 3. 04/01/2024 (Video) Load Envelopes (MP Tray) 4. 22/10/2018 Setup a Brother machine on a wireless (Wi-Fi) network. 5. 22/10/2018 (Video) Set up your Brother machine Product Setup FAQs & Troubleshooting