ST506 drive not spinning...

[Rick Bensene]

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.

Rick Bensene
The Old Calculator Web Museum
http://oldcalculatormuseum.com 

> -----Original Message-----
> From: cctalk-bounces at classiccmp.org 
> [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Jules Richardson
> Sent: Monday, February 07, 2005 3:55 AM
> To: cctalk at classiccmp.org
> Subject: ST506 drive not spinning...
> 
> 
> Anyone know if an ST506 interface drive should always start 
> spinning as soon as power is applied? I've never known one 
> that doesn't, but I'm not sure if (as with SCSI drives) 
> there's a way of rigging things so they only start when 
> connected to a controller.
> 
> Dug the Masscomp out of storage (it reeks of mouse piss) but 
> the drives show no signs of spinning on the bench with just 
> power applied - just get a click from the solenoid and that's it. 
> 
> cheers
> 
> Jules
> 
>