Thank you for using the Support Forum. The only other thing you can try that you have not already done is to make sure the paper tray edge guides are right up against the paper and that the correct settings for the type and size of paper has been configured for the tray. If this does not help please consider contacting your support centre for further assistance.
Thanks, CherylO-Xerox Community Manager
Be sure to click Kudos for those who have helped you. Select Accept as Solution for posts that have helped to solve your issue(s)!