Multibus ST-506/QIC-02 (was: Re: SGI IRIS 1400 ...)

From: Tothwolf <tothwolf_at_concentric.net>
Date: Sun Jul 21 19:30:01 2002

On Sun, 21 Jul 2002, Tony Duell wrote:

> > I also just noticed someone cut off the spindle ground strap. I wonder if
> > it built up a static charge and damaged part of the head amplifier
> > electronics?
>
> Possibly. The preamp is on the flexiprint inside the HDA (:-(). If you
> can get a 'scope you can look for the servo sigals on the 2 wire jumper
> between the boards. If you get nothing there, then you can syspect HDA
> problems, I think. Without a 'scope it's difficult to make any
> meaningful tests :-(

Would the preamp even be replaceable if it turns out to be faulty? Any
suggestions for a (temporary) home-brew scope probe?

-Toth
Received on Sun Jul 21 2002 - 19:30:01 BST