How to reset BIOS in Sun Workstation Ultra 20?

Hi,
My Sun Workstation Ultra 20 don't start (micro fan running but nothing on the screen)
I think is a BIOS problem and I would to reset it but i don't how to do it.
Thanks.

I suggest two possibilities.
(1) Remove AC cord. Remove computer's side cover.
Remove the t.o.d. battery and wait 5 minutes before reinstalling the t.o.d. battery.
Reinstall the chassis side cover and plug the AC cord back in.
or alternatively...
(2) Get the documentation. Read the documentation.
Find the "Clear CMOS" jumper and momentarily move JP15.
Neither of those methods has any finesse, but they work.
My preference is for suggestion #2
(you never know what else you might learn from the documentation).

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