Gunther Schadow wrote:

> O.K. I'm sure my problems are simply due to the heads being
> locked as they should. I'm confident I'll find the unlock
> mechanism once I opened up the hood, but I don't know how
> I open up the hood. I know how to get to the controll boards
> with the serial console connector, that's just the small
> cover with this one quarter-turn hex-key lock. But supposedly
> you can open the larger cover that hinges farther back.
> Where is that hood lock mechanism?

There are to revisions of the RA81 chassis, the newer one is very similar
to the RA82 chassis. The main difference, in terms of opening the hood, is
that the newer RA82 like type which has a plastic front instead of a metal
one, opens with two hex key locks left and right accessible through the
vent grooves. The older revision of the RA81 chassis has the hood looking
mechanism also in the front but exactly in the middle accessible through
the vent grooves. Use a suitable screwdriver and push the lid behind the
vent grooves in order to open the chassis hood.
I hope this helps.

Regards - Chris