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Path: utzoo!utgpu!water!watmath!clyde!rutgers!cbmvax!hedley
From: hedley@cbmvax.UUCP
Newsgroups: comp.sys.cbm,comp.sys.misc
Subject: Re: Commodore 1541 Disk Drive Problem. Help!
Message-ID: <2672@cbmvax.UUCP>
Date: Fri, 30-Oct-87 20:22:26 EST
Article-I.D.: cbmvax.2672
Posted: Fri Oct 30 20:22:26 1987
Date-Received: Sun, 1-Nov-87 09:51:20 EST
References: <23764DLZ@PSUVM>
Reply-To: hedley@cbmvax.UUCP (Hedley Davis)
Organization: Commodore Technology, West Chester, PA
Lines: 26
Xref: utgpu comp.sys.cbm:762 comp.sys.misc:895

In article <23764DLZ@PSUVM> DLZ@PSUVM.BITNET (Mark C. Denchy) writes:
>This is a posting for a friend:
>     
>  I own a 1541 Commodore Disk Drive and I am having numerous problems.
>First of all, when I try to read or write to disk I usually get random errors
>(error 23).  Most of the time this happens when the drive is writing the
>high density tracks (1-17).  I tried alignment at least 10 times in the past
>week and I also tried speed adjustment (normal, faster (302 rpms), and slower
>(298 rpms).  The second problem is that the drive sometimes skips tracks.
>For example, the one disk I formatted had track 3 where track 1 SHOULD have
>been on the disk.  When the drive tried to go to track 2 the head hit the
>metal bar that prevents the head to go farther than track 0.  I tried a
>second write-timing chip (I don't remember the chip number), but still no
>luck.  Can anyone help???  I'm going to take it to a shop soon but I was
>wondering if anyone can help.  Thanks.
>     
Hate to debug long distance like this.
Ok, we know the head is not where is should be, but the processor is
running happily ( or seems to be ) so all that seems ok.

Therefore, it might be the drive mechanism itself refusing to move
properly, or the circuits which command the drive to move.

Check there.

Hedley