Fairlight-CMI

Hi Harald,

I learned that the card did, indeed, not work in its current state.
Someone else already removed all the parts that where destroyed by the battery acid.

The CMI was operating correctly before the battery accident happened. So I'm hoping that 
by repairing/rebuilding the CPU Control card the unit will work again.

Do all CPU cards have a cable soldered on top of it? I saw the same cable on David Morley's 
CPU card. Which makes me think that it's a factory mod.

Best Regards,
David


--- In Fairlight-CMI@yahoogroups.com, "Harald Feldmann" <feldmann@...> wrote:
>
> Hi David,
> 
> 
> I find the picture a bit odd, the battery is supposed to be on the round
> part which is at the bottom of your picture. The part that looks very
> corroded is the crystal. It would seem to me that the crystal is covered
> in oxide. **If it worked before like this*** , maybe just clean it up a
> bit and remove all the conductive powder that comes / came off of it ?
> 
> Still it is odd that it worked before.
> 
> Regards,
> Harald
> 
> 
> > Hi (bonjour ?)
> >
> > David,
> >
> > This picture is bad :( bad day for this Q133 ;)
> >
> > Normaly in Q133(my is R6-CR) you found these chips in location :
> >
> > D5,6 you found 2x16 EPROM with F8LMRK5
> > C5,6 you found 2x16 EPROM with Q9FGMRK1
> >
> > ou found the bin file of this eprom here :
> > http://egrefin.free.fr/eng/fairlight/cmi2xEpromsE.php
> >
> > C10 74LS97
> > C9 74LS158
> > C8 74LS74
> > C7 74LS174
> >
> > C4 74LS03
> > C3 74LS00
> >
> > CRYSTAL is SKY 1.8432 MHz
> >
> >
> > bonne chance ;)
> >
> > JB
> >
> > Selon dvdborn <dvdborn@...>:
> >
> >> Hi,
> >>
> >> I've taken upon me the daunting task of restoring a Series IIx.
> >>
> >> When it went into storage it was still working fine. But that was before
> >> the
> >> battery decided
> >> to spill its acid all over the CPU control card.
> >>
> >> I'm guessing that someone else already has done some work on the card
> >> since
> >> it seems
> >> that some chips are missing. Or is it normal that some sockets on the
> >> board
> >> are not filled?
> >>
> >> I've uploaded a picture of the card here:
> >> http://kunst.phlimburg.be/~dvdborn/CMI_IIx_CPU_card.jpg
> >>
> >> Can anyone else please post a picture of their CPU Control card so I can
> >> compare the 2?
> >>
> >> I hope I get this IIx going again. It will give me the chance to own it
> >> for a
> >> substantial
> >> amount of time and play with it.
> >>
> >> BTW, I'm not a qualified technician but I restored my own Emulator III
> >> some
> >> time ago and
> >> that went well.
> >>
> >> Cheers,
> >> David
> >> http://dvdborn.blogspot.com
> >>
> >>
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>