Hi Hebi,
Thank you for using the Xerox forum.
I would suggest that you review the following solution to see if it helps.
Solution : Program the Paper Trays With the Correct Paper Size, Type, and Color
I also searched the 5740 Support and Drivers site for default paper and found a few other solutions that you may want to look at.
If that does not resolve your issue you may consider contacting our specific product support experts at the following link:
Fast Track to the Expert