Re: Star Castle Signature analysis

From: Matthew Rossiter <matt_at_rossiters.com>
Date: Mon May 17 2010 - 17:38:53 EDT

Are you using the Cinematronics Exerciser or the Kurz Kasch version?
If the Exerciser is plugged in, then you will definitely get the Red LED.  In normal operating mode, the LED should turn off.
I get the most stable signatures if I don't use the Exerciser to power the board.  I prefer using an external switching power supply with no other power source.  At least for the Kurz Kasch version.

Make sure the IC clips are making good contact with the IC pins and make sure there's no flakey wires between the Exerciser and the the clips.

Matt



On 5/17/2010 7:44 AM, Kevin Moore wrote:

Might help if I was reading pin 12 on C8. Anyways, it reads correctly. But the voltage thing still bugs me.

I shouldn't have to go above 5.1v should I?

Kevin

On Mon, May 17, 2010 at 7:38 AM, Kevin Moore <talon.k@gmail.com> wrote:

Ok here's the quick of it.

I've got a Cinematronics Exerciser,  and HP5004 I'm used to doing sigs on Asteroids and the like.

But Cinematronics boards are new to me, as is the whole signature stuff.

The board has solid LED, will not play blind.

Hook it up on the bench, hook the exerciser up, and start trying to do analysis.

Having a bit of a problem.

First problem, is unstable sigs until the voltage is cranked up to 5.25v

Next problem is initial check on C8 pin 12 gives 665F pin 5, and 6 give the expected C32P

But I shouldn't have to crank they voltage that high to get things to run in the first place should I?

Also I'm not sure what I should be seeing as far as the LED with the exerciser hooked up, should the led be solid, go out or blinking? I know when the game is running it should come on for a few seconds, then go out. But since I obviously have a problem with the board it doesn't. Of course adjusting the +5 will result in a LED t hat blinks.

Do anyone have any insights they can impart to me  :)

Thanks,

Kevin

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