ST506 drive not spinning...

From: Jules Richardson <>
Date: Mon Feb 7 13:47:08 2005

On Mon, 2005-02-07 at 10:17 -0800, Rick Bensene wrote:
> May sound obvious, but have you checked the +12V and +5V supplies to make
> sure that they are within spec.?
> If the +12V isn't alive, or can't provide enough current, the drive won't
> spin, as the 12V is what is used for the spindle drive.

Yep, both rails seem happy. I expect everything's just totally caked up
with horrible stuff and stopping the platters from turning, or as
suggested mouse piss has corroded the boards on the bases of the drives.

Just thought I'd ask about any kind of delayed-start ability before I
started dismantling the drives in case; it caught me out a while ago
with a 5.25" SCSI drive. There was nothing in the docs about it having
delayed start (and it wasn't configurable via jumpers) but it refused to
come alive unless hooked up to the SCSI bus. It's the only SCSI drive
I've known that wasn't jumperable for delayed/auto start but didn't
start up with just power applied.

Wondered if there was any way for a ST506-interfaced drive to do the
same thing, i.e. detect if it was connected to a controller before
starting - even though I've never found a drive that does that...


Received on Mon Feb 07 2005 - 13:47:08 GMT

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