HL-L6400DW FAQs & Troubleshooting HL-L6400DW Not your product? Sort by: Updated Date Popularity 4 Results 1. 27.11.2018 After the selected tray is out of paper, the Brother Machine prints by different paper size and paper types from another tray. 2. 22.11.2018 Install the optional lower tray 3. 18.03.2016 Install the Tower Tray Unit. 4. 18.03.2016 Install the Mailbox. Product Setup FAQs & Troubleshooting