[net.micro.apple] Apple ][+ disk drives

glen@intelca.UUCP (Glen Shires) (11/02/84)

well after two error-free years, my apple ][+ disk drive is beginning to
die a rapid death... but its a strange problem, I wondered if anyone out
there had similar experiences/helpful hints.

The outer tracks work perfectly, the inner tracks are flakey with the
flakiest tracks on the very inside.

Disks written long ago are only slightly flakey.
Newly formatted disks work perfectly (no bad blocks)
Both old and new disks get extremely flakey when things are written
and subsequently read from the inner tracks.

Yes, it sounds somewhat like head positioning and possibly alignment
problems, has anyone had similar problems or know how to fix it.
(I do have access to scopes, etc.)
-- 
^ ^    Glen Shires, Intel, Santa Clara, Ca.
O O     Usenet: {ucbvax!amd,pur-ee,hplabs}!intelca!glen
 >      ARPA:   "amd!intelca!glen"@BERKELEY
\-/    --- stay mellow

spector@acf4.UUCP (11/04/84)

Ahhh Yup, it sounds like you need the old heads aligned.  The very same thing
happened to my Apple ][+ and its drives.  You should really have the drives
looked at ASAP, my experience was that I had a great deal of difficulty reading
the disks I have written with the 'flakey' drives after they were fixed...


				'Hope that helps....


	- Dave Spector
	  NYU/acf Systems Group

23176064@sdcc3.UUCP ([>Voltage Spike<]) (11/04/84)

> well after two error-free years, my apple ][+ disk drive is beginning to
> die a rapid death... but its a strange problem, I wondered if anyone out
> there had similar experiences/helpful hints.

Well, I also had trouble with my Disk ][ drive, at the age of 2.  My
only solution was physically pushing the drive head back to beyond
track 0...unfortunately this is only works for the next couple of
boots.  A much better solution is buying a new one, such as a
Micro-Sci A2, or Quentin.  Both are excellent.  Also, I remember a
msg. on the net about high density floppies...could someone tell me
when these will be available, and who is producing them?

> 
> The outer tracks work perfectly, the inner tracks are flakey with the
> flakiest tracks on the very inside.
> 
> Disks written long ago are only slightly flakey.
> Newly formatted disks work perfectly (no bad blocks)
> Both old and new disks get extremely flakey when things are written
> and subsequently read from the inner tracks.
> 
> Yes, it sounds somewhat like head positioning and possibly alignment
> problems, has anyone had similar problems or know how to fix it.
> (I do have access to scopes, etc.)
> -- 
> ^ ^    Glen Shires, Intel, Santa Clara, Ca.
> O O     Usenet: {ucbvax!amd,pur-ee,hplabs}!intelca!glen
>  >      ARPA:   "amd!intelca!glen"@BERKELEY
> \-/    --- stay mellow

*** REPLACE THIS LINE WITH YOUR MESSAGE ***