Dell 1135n Multifunction Mono Laser Printer - Manual (Page 112)

5. Close the front door. Ensure that the cover is securely closed.
Clearing original document jams
When an original jams while passing through the document feeder, a warning message appears on the display screen.
To avoid tearing the document, remove the jammed document slowly and gently.
To prevent document jams, use the scanner glass for thick, thin, or mixed paper-type originals.
1. Remove any remaining pages from the document feeder.
2. Open the document feeder cover.
3. Gently remove the jammed paper from the document feeder.
If you see no paper in this area, go to step 5.
4. Close the document feeder cover. Reload the pages you removed, if any, in the document feeder.