31 Aug
2006
31 Aug
'06
3:48 p.m.
On 8/30/2006 at 10:35 PM ard at p850ug1.demon.co.uk wrote:
HP used the 80 cylinder versions of those drives, I think, from the very
start. They were certainly Sony mechanisms (and turned at 600rpm).
The HP service manual for the drive (actually, mostly a boardswapper
guide, and nowhere near as good on the mechanism as the Sony manuals)
says that early drives will not open the shutter on automatic disks, and
that there's a modification kit available to let them do so. Alas it
simply says that 'fitting instructions are included with the kit' -- they
are not also given in the service manual. I asusme the modification
originated from Sony
Is it possible your drive has had the update kit fitted?
-tony
Early 3.5" disks had a manual shutter, you
had to slide it open before
inserting the disk in the drive, and squeeze the corner of the disk to
close it after ejecting the disk. Drives designed for those disks only
couldn't take the now-standard disks with automatic shutters because they
lacked the lever to open the shutter.
Was this universal? My Sony 2/3 height drive (40 cylinder, single side)
will accept the shuttered disks just fine and it's about as early a 3.5"
drive as one can find.