Dell C1765nfw admin password.

I have a replacement printer from Dell. I cannot access some of the toolbox maintenance items because someone has set a five character admin password. I have tried all the obvious like 00000, 99999, admin, etc.

Can I do something to reset to a blank password? Is there a default five character password?

I notice that there is another post asking for how to do a hard reset. I guess that would also solve my problem.