Epson AcuLaser MX20DNF - Manual (Page 224)

Paper Jam around the DM tray
1. Remove the standard paper cassette.
2. From the rear view, push the DM tray and gently pull any sheets of paper out.
Note:
Do not touch any metal part except the green lever on the DM tray.
3. From the front view, push the DM tray and gently pull any sheets of paper out.
Epson AcuLaser MX21/MX20 Series User's Guide
Troubleshooting 224