2 Oct
2024
2 Oct
'24
2:25 p.m.
On Wed, Oct 2, 2024 at 10:20 AM Jonathan Chapman via cctalk <
cctalk(a)classiccmp.org> wrote:
Looks like I need to take this one step at a time, thanks Jon
B
What do people
use to align a shugart drives?
The appropriate alignment diskette, an *analog* oscilloscope, and a
program to step the drive around and load heads. For most drives, that's a
PC and ImageDisk, but we use a DeRamp FDC+ and AFEXER for Pertec drives in
MITS disk systems.
Seems we're one of the few places that will still do it for other people.
I know of two other hobbyists who can align their own drives, but neither
will do it for other people anymore, I think.
I plan to learn more about the Dysan tester gear
because this seems to
be a popular repair
module.
Be *very* *careful* mounting an alignment diskette in a drive. If you frag
it, there's no getting it back. They can't be written using a regular
drive. When repairing a drive, I run it in whatever alignment it is, and
read/write a lot of test data to make sure it's not about to wreck my
alignment diskette with an errant write. After it is 100% functional, then
it gets aligned.
Thanks,
Jonathan