Re: Catbox, Catbox Sigs

Kevin Moore wrote:
> Thanks, I have all that. I was just wondering if they had done a sig
> analysis profile. Before I start hitting it with the logic probe :)
>
>
Ah, no, not to my knowledge. I usually fire up the Fluke 9010 about this
time with non-working CPU based equipment... If you have a second Cat
Box you can use that to troubleshoot the sick one...

I would start (after verifying proper voltages) with substituting the
RAM, then the CPU and finally the Eprom. This is the order I find
failures in most CPU based equipment.

If there are PROMs, then they are about as suspicious as RAM, however no
PROMs in the Cat Box. ROMs are almost as reliable as Eproms in my
experience.

John :-#)#
>
> On Tue, Feb 2, 2010 at 11:06 AM, John Robertson <pinball@telus.net
> <mailto:pinball@telus.net>> wrote:
>
> Kevin Moore wrote:
>
> Is there a Catbox Sig manual for the Catbox, or for that
> matter one using an HP5004a to do sigs on the catbox?
>
> I've got another cat box that the logic board isn't running.
>
> Thanks,
>
> Kevin
>
> Hi Kevin,
>
> I have a scan of the Atari CAT BOX book, includes schematic - its
> up on Tech Tools List FTP site under CAT BOX...
>
> FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment
>
> Mail List Archive site:
> http://seven.pairlist.net/pipermail/techtoolslist/
>
> Hope that helps! ROM images, POD sheets, etc. also found there...
>
> John :-#)#
>
> --
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> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com <http://www.flippers.com> "Old
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-- 
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Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com 
"Old pinballers never die, they just flip out"
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