Conner HD's stickums: portable Mac HD probs.

From: jpero_at_pop.cgocable.net <(jpero_at_pop.cgocable.net)>
Date: Thu Aug 20 15:14:43 1998

Dead or no spin Conners...

Anyone who thought it's bad bearing grease... not really.
Bad bearings rarely happens, did tear down those dead Conners for
failure analysis.

It's the platters and heads stuck together after heads sliding on
platter during spin up and spin down too often and for long time
wearing out the protective/lubing surface.

One word of Conner's designations on type of HD form factors: no
zeros between CP3 and the amount of formatted size is always between
2/3 height to half height, One zero between CP3 and the xxx size is
always 1" and extra 0's often signify next generations usually.

Okay, Those problem HD's you saw in Mac portable and most Mac's that
used Conner and only once with early Quantums but that is only once.
I will focus only on Conner because I know this very well.
That is from going though over 40 of them on that trusty bench in 3-5
years period.

Most died from platters/heads stickums and some died from ground up
platters especially on CP30xxx and CP300xxx and up and
to lesser degree blown logic boards. I recently rebuilt a CP30174E
after I finally found a logic board for it after 3 years of
searching. For now no more Conners ever and thankfully that
Seagate "killed" Conner. I usually don't bother the Conner hd's any
longer as they're getting OLD and spare parts I had is all gone now.

To confirm that your conner hd is stuck, turn on your portable and
give the protable a sharp turn to sudden stop parallel with table
that instant, and give once or twice after first one with turn on.
Suggest putting two layers of slippery materials on table to help the
easy sliding around.

Jason D.

PS: My friend is sending the Compaq Portable III to me
with dead Conner (hint, hint!) in it. Found it along with Deskpro
386/25 in dumper!
email: jpero_at_cgocable.net
Pero, Jason D.
Received on Thu Aug 20 1998 - 15:14:43 BST