This is a very late reply but I was just able to recover the set up screen from the front number pad by entering 1 2 3 4 5 6 7 8.
I previously set a user password and then lost control of the front mode/menu button.
All is happy again. I just saved $65.00 plus freight both ways. That was the quote for repair in California. I was told they needed to telnet in and reset that way. Boy did they hold back or just not know the back door password?