Check for any obstruction on the paper path, duplex path, and media tray pass through areas. Clear the obstruction if one exists.
Check the condition of the pick roll and separator roller. Clean the rollers if necessary. Also check the paper tray for any signs of damage.
Note: Should any of the rollers be worn out or if the paper tray shows sign of damage, contact Lexmark Technical Support to setup printer service.
When printing, make sure that the rear door is fully closed. If the rear door fails to close fully or should it show any signs of damage, contact Lexmark Technical Support to set up printer service.