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- Path: gwen.pcug.co.uk!ppse!ppieroni
- Newsgroups: comp.sys.cbm
- Message-ID: <192@ppse.win-uk.net>
- References: <4g5cgn$jmi@bcarh8ab.bnr.ca> <9602180047.AA000ga@cosine.demon.co.uk> <4gh78f$da7@Twain.MO.NET> <9602222001.AA000ix@cosine.demon.co.uk><4gspva$3vr@Twain.MO.NET>
- Reply-To: ppieroni@ppse.win-uk.net (Chip Pieroni)
- From: ppieroni@ppse.win-uk.net (Chip Pieroni)
- Date: Thu, 29 Feb 1996 15:50:32 GMT
- Subject: Re: Permanent fix for misaligned 1541!
-
-
- >Another common problem was that the top R/W head did not have
- >enough downward pressure (tension) to firmly press against
- >the diskette. The way I usually tested this was to try to
- >format a diskette; the format would go OK on the first pass
- >(bottom head) but would fail upon starting the second pass
- >(upper head). I would then LIGHTLY apply a downward force
- >on the upper head with either my finger or the end of my
- >ink pen and try another format. If it worked then I
- >knew what the problem was. I would normally confirm this
- >by putting in an alignment disk and looking at the "eye"
- >pattern on a scope while I applied/removed pressure on
- >the upper head and watched the amplitude of the signal
- >get larger/smaller. The usual fix was to CAREFULLY
- >wrap another turn on the tension spring for the upper
- >head. I would use a pair of needle nose pliers to
- >wrap the extra turn. Try this at your own risk if
- >you are certain this is the problem. I wouldn't
- >think twice about doing it. But then I had lots
- >of practice...
- >
- >Cheers,
-
- Yeah, another way is to glue some coins to the top head,
- but that might not be best suitable if you use your drive
- vertically or upside down..
-
-
- Chip Pieroni..
-
-
- ---
- Chip Pieroni
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