Cleaning RK05 packs

Marc Howard cramcram at
Sat Apr 1 16:53:43 CDT 2017

BTW, have you replaced the emergency head retract batteries and/or allowed
them to reach full charge?


On Sat, Apr 1, 2017 at 2:01 PM, Fritz Mueller via cctalk <
cctalk at> wrote:

> > On Jan 5, 2017, at 8:48 AM, Rick Bensene <rickb at> wrote:
> >
> > The method I've used very successfully for unknown packs is:
> >
> > 1) I first mount the pack in a drive that has a good absolute filter,
> > and has had the head load disabled, and spin it for a few hours.
> I’m getting to the point in my RK05 restore where I’m about ready to try
> spinning up a pack so I can work through the various offline dynamic
> checks.  I have a pretty clean looking pack to start with (has been stored
> in plastic bag, etc) that doesn’t have any particularly valuable data (just
> an RKDP backup, according to the label, and I have the original as well).
> But I thought it’d be prudent to give it a clean first anyway just in case.
> In step one of the process quoted above, is it enough to put the toggle on
> the servo amp board in the down position to disable head load?  Or is it
> best to disable head load in some other way (e.g. jumpers on the backplane,
> or disconnecting any particular cables?)
>         thanks!
>            —FritzM.

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