ML6000 reset login

Hi, I have just bought an ML6000 which happened to be part of bulk buy of (used) servers.. I am unable to login to the ML6000.  The default admin/password  have obviously been changed. How do I solve this? I don't have a support agreement and I don' know whether it operates propely (boots ok with front display showing login form) . How am I supposed to use the machine? I can neither login using front display, nor enter using the service entry (10.10.10.1). Both cases deniy access claiming wrong combination of user/password.

regards

Anders L