22 Jul
2007
22 Jul
'07
2:22 p.m.
I have the Seagate version of the CDC Wren-4 (ST4376N) and I was
wondering if anyone knew of an easy fix for the following fault:
Disk spins up (jumpered to spin up automatically) head lock clicks up,
two "burbles" that I think mean head seeks and then the drive shuts off
Probably no help, but...
My guess is that thase _are_ head seeks, and it's looking for something
(servo information?) on the disks. And since it then shuts down, it
presuambly can't find what it expects
Since it moves the heads, the disk is presumablty up to speed (normally
hard movement is inhibited until this is OK).
The problem coule, alas, be almost anywhere, heads, disks, head
amplifiers, servo circuity, etc :-(
I know the OEM manuals for the older Wens, while not containing
schematics, did at least contain pinouts between the PCBs, with named
signals. I have no idea if that information is available for your drive,
but it might be worth looking for.
-tony