[labnetwork] GCA/MANN 3600F Pattern Generator support

[Randy Ellsworth]


Hi Mike,

Nice to meet you!

Like Shawn says we’ve very familiar with the GCA steppers, but have very
limited experience with PG’s. Some things like stages and the laser are the
same and we could potentially help you out.

It would be helpful if you can measure the laser power to see if that
confirms your suspicions about losing laser counts. A weak laser could
definitely cause trouble like you’ve described.

Do you have a meter to measure the power output of the He-Ne laser?

We can lend you our meter and send it to you quickly if you provide a FedEx
number.

Reseating the interface and servo chassis PCB’s can sometimes resolve laser
count issues.


Take Care,

Randy Ellsworth
CEO/Owner
Stepper Care Services, Inc
(512)913-2781

On Mon, Dec 7, 2020 at 11:10 AM Shawn Wright <wrightsh at lnf.umich.edu> wrote:

> Hi Mike,
>
> You could contact Randy Ellsworth <rellsworth at austin.rr.com> with Stepper
> Care Services.  We have a service contract with them for our AutoStep 200
> and they have a lot of experience with these tools, and have parts.  They
> even got us back in tip-top shape after a pretty serious flood that filled
> up the environmental chambers HEPA filter and rained over the whole system.
>
> Thanks,
> Shawn Wright
> Lead Research Engineer
> Lurie Nanofabrication Facility
> University of Michigan
>
>
>
> On Dec 4, 2020, at 9:31 AM, Michael Call <michael.call at maine.edu> wrote:
>
> We have an issue with "Focus Signal lost" and "time out" errors on our
> pattern generator.  Sometimes the column will attempt to focus off of the
> glass plate(laser system losing counts?).  I've cleaned and oiled the
> stages, changed plates and all of the usual, but with no luck.  I know that
> Bob Scruton passed away a few years ago.  Has anyone taken over the service
> of these machines?
>
> Thanks,
>
> --
> Mike Call
> Research Engineer
> University of Maine
> Frontier Institute for Research in Sensor Technologies (FIRST)
> Coordinated Research entities Cleanroom
> ESRB Barrows Hall room 294
> 207-581-3382
> <image.png>
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