DCP-1400 FAQs & Troubleshooting DCP-1400 Not your product? Sort by: Updated Date Popularity 1 Results 1. 01/16/2006 I installed the LT-400 optional tray. I use letter size paper in Paper Tray #1 and legal size paper in Paper Tray #2 (LT-400). How do I program the Brother machine to select the correct paper tray when copying a legal size document? Product Setup FAQs & Troubleshooting