Re: 1571 troubleshooting

From: Francesco Messineo <francesco.messineo_at_gmail.com>
Date: Mon, 11 Dec 2017 21:55:34 +0100
Message-ID: <CAESs-_wHfr8m1w4W3sJf_OS9f22JzqDRb4Uoucnpx3bq14p2ZA@mail.gmail.com>
On Mon, Dec 11, 2017 at 9:31 PM, Spiro Trikaliotis
<ml-cbmhackers@trikaliotis.net> wrote:
> Hello,
>
> * On Sun, Dec 10, 2017 at 03:57:08PM +0100 Francesco Messineo wrote:
>
>> I'm trying to repair a 1571 drive, it reads fine all my 1541-written
>> disks, but can't format a new disk either in 1541 or 1571 mode. All I
>> get after a short while is a READ ERROR (21) kind of error.
>
> You are missing important parts for diagnosis:
>
> 1. Does the READ ERROR appear shortly after starting the format, or
>    after it has almost finished (that is, after you heard the R/W head
>    step for some tracks)?
>    That is, what does "a short while" mean exactly?


it reported the read error before even stepping a single track.
Now it works fine however. I just cleaned heads, rail and added a drop
of oil to the head rail

>
> Perhaps this is answered by question 2:
>
> 2. Which track and sector does it report with a 21 READ ERROR? Is it
>    always the same track and sector, or does it change on consecutive
>    formats?

I didn't read the track/sector informations, but as I said, it was
never stepping a single track before reporting the error.

Thanks
Frank

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Received on 2017-12-11 21:02:36

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