On 06/25/2016 07:30 PM, B00ze wrote:
> On 2016-06-25 03:49, frank  wrote:
>
>> I downloaded the fine commodore 1541 troubleshooting and repair guide and
>> it has procedures based on the "Dysan Analog Alignmnet diskette 224/2A".
>> Now I guess this one is next to impossible to get nowadays, right?
>
> Vorpal, if I recall, also came with an alignment disk - I used to have
> one. The problem is that you can't copy this disk, because then the disk
> acquires the alignment of the drive that wrote it (but if you copy it on
> a perfect drive then you're good).
>
> This guy had some for sale last year:
> http://www.lemon64.com/forum/viewtopic.php?t=55340
>
> Regards,
>
Hello, and I've still got two operating 1541s with the original long
circuit boards.  (Still amazed that the drive belts never required
replacement after 30 years.)  The only thing (other than alignment) that
ever went wrong was that I had to replace a failed voltage regulator in
one of them but that was a long time ago).

As for alignment, the original factory procedure required a special disk
and an oscilloscope.  I have a package, "1541 Physical Exam" by Cardinal
Software that also has a special disk but you can do a complete
alignment just using the info displayed on the monitor.  This package
also included two bent piano wire track 1 stops to replace the original
solid metal ones that were responsible for most 1541 drive alignment
problems.  A lesser problem was when the spindle was not turning at the
required 300 rpm.  Sincerely,

--
J. B. Wood             e-mail: arl_123234@hotmail.com

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