RK06 alignment pack

[Jon Elson]

On 06/18/2015 01:02 PM, tony duell wrote:
>
> I also seem to remember that this pack is used with a special alignement
> meter, not a 'scope. And that there are special tools for moving the heads
> I found a sort-of user manual for this on bitsavers, but no schematics of the
> meter, so no easy way to replicate it.
>
>
Yes, some drives were aligned with meters that were calibrated in +/- 
micro-inches (or um, later).
The general procedure was you commanded the drive to seek to a 
particular cylinder where the alignment pattern was recorded, and 
slipped safety pins into the positioner to prevent sudden movements.  
Then you loosened a couple socket head screws, there was a rod with an 
eccentric tip that was slipped into a slot in the head mount, and 
twisted, which crept the head in and out a tiny amount. When you liked 
the meter reading, you then tightened the screws and moved to the next 
head.

I watched this being done a number of times.

Jon