CDC 9429 Floppy maintenance manual

Fred Cisin cisin at
Sun May 8 15:59:23 CDT 2016

> > > Ahhh... of course, I should have thought of that.
> > > I am even more cautious about using the 9428 manual for 9429
> > > service, then.
>> Actually, many lines of drives, such as the Tandon TM100 have the
>> same circuitry for both the 48tpi and 96tpi variants. (and the
>> TM100-4M at 100tpi)

On Sun, 8 May 2016, Chuck Guzis wrote:
> One of the things that endears to me those pieces of garbage is that
> they apparently changed PCB designs according to what parts they had on
> hand.  I've got at least three different versions of the TM-100 PCBs,
> depending on the head stepper used (4 wire/6 wire).  Some were better
> than others.

Which would be an arument to be cautious about using the 
TM100-2  manual for the TM100-2, not just for the TM100-4.

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