6 Sep
2012
6 Sep
'12
1:23 p.m.
I don't know who has encountered the Commodore
1541 drive. Thise who have
will recall the hammering noise it made at turn-on and also when it
encountered a difficulty with a disk it was reading.
The drive under consideration is, I think, doing the same thing. It
periodically makes a noise that sounds like an impact. This noise is being
encountered with increasing frequency; I wonder if the the drive is headed
for a failure. I have other drives I can put in its place, if need be.
Not good!. My guess is that the head positioning servo is loosing lock,
and that the heads are thus swinging over the disk until they hit the end
stop. At which point it recalibrates and tries again.
Maybe due to an electronci problem, maybe due to disk damage (the head
doesn't pick up the servo information correctly). Whatever, I'd back it
up now...
-tony