Re: testing SFD1001 spindle speed

If you have a B series PC around, there are drive RPM utilities for the
SFD-1001 (or look for 8250 utils) you can use.  works great.

On Wed, Feb 12, 2025 at 8:04 AM Francesco Messineo <
francesco.messineo_at_gmail.com> wrote:

> Hi all,
> I've just recapped a Panasonic JU-570-2 with horribly leaking
> capacitors that ate a few traces on the spindle PCB. Now before
> assembling back the SDF-1001 I wanted to test and correct the spindle
> speed if needed. However the drive motor doesn't have the strobo
> patterns, so an alternate method must be used. Does anyone know if any
> of the programs on the test/demo disks can help? Images as many of you
> know are here:
> https://www.zimmers.net/anonftp/pub/cbm/demodisks/drives/index.html
> Does anyone know any test point on the spindle PCB? I think pin 6 of
> the motor controller IC could be a good place to look, but I figured
> out someone must already know how to do this task.
> Thanks in advance.
> Frank IZ8DWF
>
>