Samsung SL-M4020ND-TAA - Manual (Page 79)

79 4. Troubleshooting
Tips for avoiding paper jams
By selecting the correct medias, most paper jams can be avoided. To avoid paper jams, refer to the following guidelines:
• Ensure that the adjustable guides are positioned correctly (see "Tray overview" on page 35).
• Do not remove paper from the tray while your machine is printing.
• Flex, fan, and straighten paper before loading.
• Do not use creased, damp, or highly curled paper.
• Do not mix papers in a tray.
• Use only recommended print media (see "Print media specifications" on page 103).