In The Paper Feed Area - Samsung ML-1640 Service Manual

3. Loosen the paper if it is caught in the heat rollers.
Then pull the paper gently out.

4.1.6.3 In the Paper Feed Area

1. Remove any misfeed paper by pulling it out by the
visible edge from the tray. Make sure that all of the
paper is properly aligned in the tray.
Service Manual
Alignment & Troubleshooting
4. Close the inner cover and the top cover. Printing
resumes automatically.
2. Open and close the front or top cover to resume
printing the document from failed pages.
4-15
Samsung Electronics