7 Dec
2006
7 Dec
'06
8:24 p.m.
Adrian Graham wrote:
On 6/12/06 22:27, "Gordon JC Pearce"
<gordon at gjcp.net> wrote:
Head actuator I think; it powers up and spins up, doesn't sound headcrashed
but I can't hear or feel the heads move.....
I personally had one fail (1325) that had to do with locating track 0
(which appears to
be initially probed for by a full stroke into a rubber bumper). I think
the rubber changes
or becomes out of adjustment with age... in my case I opened the HDA
(felt I had nothing
to lose at that point), and tweaked the position by around 1 thousandth
of an inch...
the drive then came ready every time and worked fine.
I've also heard of the spindle motor brake dragging not allowing the
drive to get up to
full speed rotation... and that can be adjusted w/o opening the HDA...
it is on the
bottom under the circuit board.
-- Curt
Indeed,
it looks like the original boot drive (also an RD53) long gave up
the ghost, which is a shame because it had RT11 5.4 and one of the systems I
wrote in the 1980's......
What actually fails in them?