Re: Catbox, Catbox Sigs

Haven't run the Fluke on it, but everything else. I'm assuming it's probably an addressing problem.

Thanks,

Kevin

On Tue, Feb 2, 2010 at 11:52 AM, John Robertson <pinball@telus.net> wrote:

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> 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 :-#)#

--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
               www.flippers.com "Old pinballers never die, they just flip out"

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com

-- 
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
                 www.flippers.com 
"Old pinballers never die, they just flip out"