Hi rlk3520,
Thank you for using the Support Forum. Please take a look at the solution for the error code you are seeing. If you have followed all those steps and are still getting the error please consider contacting your support centre for further assistance.
I have a workcentre 7335 had a jam in the upper door, opened it took the jam out and now it keep saying to "close the top cover on the left side". I have double check for paper none, I have left the cover open re-boot and then closed, tried just rebooting nothing is working. Any suggestions