RE: MFM drive gone nuts

From: Martin Hoffmann-Vetter <>
Date: Mon, 21 Jul 2014 20:32:10 +0200
Message-ID: <006501cfa512$15a9aef0$>

> I went home and tried that, but after I turned the computer on,
> something very wrong happened to the drive - it does not spin. The LED
> flashes an error message, which according to the technical manual
> indicates "Index pulse not detected during spinup" which as I
> understand indicates that the drive CPU detected that it cannot spin.
> I think the drive just died :-(
> Oddly, the computer failed too and now indicates "RAM Error" on
> startup. I wonder whether these two issues are related, but I have no
> idea how.

Is there a problem with the power supply? The hard drive use the +5V and +12V. The dynamic RAM uses only +5V. What happens with the +5V?


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Received on 2014-07-21 19:01:34

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