I have a Fluke 9010A with an 8080 pod - said combination works fine with every '3-layer' Taito Space Invaders boardset that I've used it with, but if I try it on *good, working* 'L-shaped' Taito boards I get the error: UUT Power Fail This has me puzzled - why should the Fluke work fine with one type of boardset, yet not the L-shaped set, even though said L-shaped sets work perfectly with an 8080 in the CPU socket? Thanks, Phil _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
I've had similar problems on PCBs that run fine with a CPU. I think it may have happened on my L-shaped SI. As Martin said, I just disabled the UUT test and it worked fine. Phil -----Original Message----- From: techtoolslist-bounces@flippers.com [mailto:techtoolslist-bounces@flippers.com]On Behalf Of Phil Morris Sent: 13 April 2005 21:30 To: techtoolslist@lists7.flippers.com Subject: [Techtoolslist] Fluke 9010A and Space Invaders I have a Fluke 9010A with an 8080 pod - said combination works fine with every '3-layer' Taito Space Invaders boardset that I've used it with, but if I try it on *good, working* 'L-shaped' Taito boards I get the error: UUT Power Fail This has me puzzled - why should the Fluke work fine with one type of boardset, yet not the L-shaped set, even though said L-shaped sets work perfectly with an 8080 in the CPU socket? Thanks, Phil _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
My guess is that the voltage levels are slightly lower on the L-shaped boardsets. The voltage threshold that triggers the the UUT Power fail is probably too high such that even the subtle lower voltage between one boardset and another causes the fail to trigger. (Even though the voltage is high enough to run the board logic) I typically disable this check as well, or tweak my adjustable power supply up a few hundred millivolts. -Adam On 4/13/05, Phillip Eaton <inbox@phillipeaton.com> wrote:
I've had similar problems on PCBs that run fine with a CPU. I think it may have happened on my L-shaped SI.
As Martin said, I just disabled the UUT test and it worked fine.
Phil
-----Original Message----- From: techtoolslist-bounces@flippers.com [mailto:techtoolslist-bounces@flippers.com]On Behalf Of Phil Morris Sent: 13 April 2005 21:30 To: techtoolslist@lists7.flippers.com Subject: [Techtoolslist] Fluke 9010A and Space Invaders
I have a Fluke 9010A with an 8080 pod - said combination works fine with every '3-layer' Taito Space Invaders boardset that I've used it with, but if I try it on *good, working* 'L-shaped' Taito boards I get the error:
UUT Power Fail
This has me puzzled - why should the Fluke work fine with one type of boardset, yet not the L-shaped set, even though said L-shaped sets work perfectly with an 8080 in the CPU socket?
Thanks, Phil
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My guess is that the voltage levels are slightly lower on the L-shaped boardsets. The voltage threshold that triggers the the UUT Power fail is probably too high such that even the subtle lower voltage between one boardset and another causes the fail to trigger. (Even though the voltage is high enough to run the board logic) I typically disable this check as well, or tweak my adjustable power supply up a few hundred millivolts. -Adam
Well, all I know is that I get this problem on two boardsets, both of which give the UUT Power Fail error even with that check disabled. Turning up the voltage gets around the UUT Power Fail problem, but then doing a Run UUT just goes garbage onscreen, again on both boardsets. Phil _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
Are these both 8080 based games? I'm still suspect of this UUT error. Disabling the trap bad power supply in the menu should definately stop it from barfing at that point unless it's SO low that it just can't start. Definately a weird one i'll give you that... Martin. On Thursday 14 April 2005 21:45, Phil Morris wrote:
My guess is that the voltage levels are slightly lower on the L-shaped boardsets. The voltage threshold that triggers the the UUT Power fail is probably too high such that even the subtle lower voltage between one boardset and another causes the fail to trigger. (Even though the voltage is high enough to run the board logic) I typically disable this check as well, or tweak my adjustable power supply up a few hundred millivolts. -Adam
Well, all I know is that I get this problem on two boardsets, both of which give the UUT Power Fail error even with that check disabled. Turning up the voltage gets around the UUT Power Fail problem, but then doing a Run UUT just goes garbage onscreen, again on both boardsets.
Phil
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Are these both 8080 based games?
Yes - Space Invaders is indeed 8080-based. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
I wonder if the pod does a reset when you run a Run UUT. That could explain gargage on the screen as who knows where it's addressing if it hasn't reset yet. Does the PCB have a reset switch/pushbutton ? On 4/15/05, Phil Morris <phil@morris0.fsnet.co.uk> wrote:
Are these both 8080 based games?
Yes - Space Invaders is indeed 8080-based.
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I wonder if the pod does a reset when you run a Run UUT. That could explain gargage on the screen as who knows where it's addressing if it hasn't reset yet. Does the PCB have a reset switch/pushbutton ?
Nope, but doing a reset makes no difference anyhow. Please see my other reply for more details. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
For what it's worth, isn't the tilt switch on the front door a board reset? Phil Morris wrote:
I wonder if the pod does a reset when you run a Run UUT. That could explain gargage on the screen as who knows where it's addressing if it hasn't reset yet. Does the PCB have a reset switch/pushbutton ?
Nope, but doing a reset makes no difference anyhow. Please see my other reply for more details.
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Phil, I've had pods that would pass the self test (when you initiate the buss test), even though they had a bad ribbon cable. Therefore, you couldn't run the board even though the pod passed self test. Have you ever been able to run a UUT with this pod? Sorry if you've already covered this but I've not followed all of the posts. Mark Hooks ----- Original Message ----- From: "Phil Morris" <phil@morris0.fsnet.co.uk> To: "Adam Courchesne" <ajcrm125@gmail.com>; "Technical Tools Mail List" <techtoolslist@flippers.com> Sent: Thursday, April 14, 2005 5:45 PM Subject: Re: [Techtoolslist] Fluke 9010A and Space Invaders
My guess is that the voltage levels are slightly lower on the L-shaped boardsets. The voltage threshold that triggers the the UUT Power fail is probably too high such that even the subtle lower voltage between one boardset and another causes the fail to trigger. (Even though the voltage is high enough to run the board logic) I typically disable this check as well, or tweak my adjustable power supply up a few hundred millivolts. -Adam
Well, all I know is that I get this problem on two boardsets, both of which give the UUT Power Fail error even with that check disabled. Turning up the voltage gets around the UUT Power Fail problem, but then doing a Run UUT just goes garbage onscreen, again on both boardsets.
Phil
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I've had pods that would pass the self test (when you initiate the buss test), even though they had a bad ribbon cable. Therefore, you couldn't run the board even though the pod passed self test. Have you ever been able to run a UUT with this pod? Sorry if you've already covered this but I've not followed all of the posts.
Mark Hooks
The pod is fine and works with other 8080-based games. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist
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