HL-3450CN FAQs & Troubleshooting HL-3450CN Not your product? Sort by: Updated Date Popularity 3 Results 1. 01/27/2014 "JAM E1/E2" error appears on the LCD. What should I do? (For users who installed the DX-3400 DUPLEX UNIT) 2. 01/27/2014 "JAM D" or "JAM E2" error appears on the LCD. What should I do? 3. 01/27/2014 "JAM A1" / "JAM A2" / "JAM A3" error appears on the LCD. What should I do? Paper Feed / Paper Jam FAQs & Troubleshooting