Samsung ML 1740 - Manual (Page 101)

S OLVING P ROBLEMS 6.8
2 Open the rear output tray.
3 Loosen the paper if it is caught in the feed rollers. Then pull
the paper gently out.
Note: Please be careful when you open the rear cover. The inside
of the printer is still hot.
4 Close the rear output tray.
5 Open and close the front cover. Printing can be resumed.