Tutankham rug pattern?

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I just received a "working" Tutankham board from QuarterArcade.
(they've been awesome so I'm going to assume in good faith it works as stated when purchased.)

I am using the Tutankham specific Jamma adapter from Bob Roberts.
And I'm getting this rug pattern that varies between a few colors like purplish, greenish, redish, etc. and has a few dots that move around on the screen.

Anyone familiar with what this means? (I don't have any other Konami titles to reference nor do I own schematics yet).
--i should mention that this same cab setup works fine with a multi-board and a moon patrol board/irem-jamma connector. so I'm confident the cab setup is OK.

Any insight where to start? I'm hoping it's something simple like a voltage adjustment
--switching powersupply is putting out 5.1 volts at the pins on the Konami board.
--the -5 is running to the first pin on the board, parts side nearest ribbon cable
--the +5 is running to the farthest pin on the board, parts side-farthest from ribbon cable.

Thanks.

IMG_20111203_195941.jpg
 
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How about the 12 Volts? Is it hooked up? Tutankham has memory that requires all of +5V, -5V and +12 Volts to be hooked up to operate properly. Make sure you've got them all going. Also, if you are using a Konami to Jamma adapter, make sure you have the jumper across the -5V isolation. If you don't have the jumper, you're not flowwing the -5 volts. Oh, Bob Roberts -- not familiar with that adapter, so not sure if it has -5V isolation.....
 
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It's good you have -5 but not +12 instead of the other way around... Some earlier versions of the 4116 ICs can be damaged by putting +12 on it without the -5v being present.

The wiring diagram shows that the connection on the other side of the board from the -5v is where the +12 goes...
 
OK, I see. so I do need to question the integrity of the jamma wires.

Is there an online resource with the Tutankham schematics so I can double check the jamma wiring?

Thank you.
 
Sounds like you've got your -5V hooked up wrong. According to this, it should be on the solder side, not the parts side. Same position on Parts side should be +12V. Is this a problem with the Bob Roberts converter connector?

Should just be a standard Konami connector:
http://www.arcade-museum.com/pinouts-class/Konami_Classic.html

Code:
	      Standard Konami Connector

	 Solder Side      |        Parts Side
 _________________________|________________________
	    -5V       | A | 1 |       +12V
	  Speaker     | B | 2 |     Speaker
	2P  Button 2  | C | 3 |    2P  Button 1
	2P  Left      | D | 4 |    2P  Right
	1P  Start     | E | 5 |    2P  Start
	1P  Button 1  | F | 6 |    2P  Up
	1P  Button 2  | H | 7 |  Service Switch
	1P  Right     | J | 8 |    1P  Left
	1P  Up        | K | 9 |    2P  Down
	Coin  (1)     | L | 10|    Coin  (2)
	1P  Down      | M | 11| Coin Counter  (1)
		      | N | 12| Coin Counter  (2)
       Video Green    | P | 13|  Video Blue
       Video Red      | R | 14|  Video Sync
		      | S | 15|
	   GND        | T | 16|       GND
	   GND        | U | 17|       GND
	   +5V        | V | 18|       +5V

Here is a link to the manual:

http://www.crazykong.com/manuals/Tutankham.man.pdf

Here is a Jamma Pinout:

http://www.mikesarcade.com/cgi-bin/spies.cgi?action=url&type=pinout&page=Jamma.html

tutankhampcb.jpg
 
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Uh oh...

There's a great chance if you miswired that -5v connection that you fried all the 4116 RAM chips.
 
Thanks for the links a ton! Sure looks like the Bob Roberts wiring is wrong from your info above. I'll take a look at it this weekend.

4116 chips. well that's easy enough to replace if they got screwed. infact I think I have 24 laying around with my Williams parts. this sounds like it could use the 4164 ram conversion like Williams boards. :)
 
I only have the Konami connector and a meter in front of me right now. but I measured resistance and compared the connector to the info above.

solder side
Konami pin A = Jamma pin E = -5v
Konami pin T = Jamma pin A, B = GND
Konami pin U = Jamma pin e, f = GND
Konami pin V = Jamma pin C, D = +5

parts side
Konami pin 1 = Jamma pin 6 = +12
Konami pin 16, 17 = Jamma pin 1,2,4,27,28 = GND
Konami pin 18 = Jamma pin 3,4 = +5

That all matches up.
I don't find any solder shorts or breaks on the Konami connector.
Guess I'll have to plug it into the jamma harness and remeasure the resistances on pins then check voltages at the konami pins with the board unplugged.

hmmmm, looking at the voltages I measured when the board was plugged in, something isn't adding up here.
I know the harness is wired correctly with the voltages.
 
solder side
Konami pin A = Jamma pin E = -5v
Konami pin T = Jamma pin A, B = GND
Konami pin U = Jamma pin e, f = GND
Konami pin V = Jamma pin C, D = +5

That doesn't sound right... from the Jamma link I sent you, here is what I see:

Code:
  GND A 1 GND   
  GND B 2 GND   
  +5v C 3 +5v   
  +5v D 4 +5v   
  -5v E 5 -5v   
 +12v F 6 +12v

Jamma pins E and F should be -5V and +12V respectively, not GND as you have listed. Actually, you have Jamma pin E listed twice.

Also, on your parts side listing, you have:

Code:
Konami pin 16, 17 = Jamma pin 1,2,4,27,28 = GND

Jamma pin 4 should not be GND, it should be +5V, so check that one again as well.

I didn't check everything, so I think you should go through the connections again and see if what you indicated above is true. If so, fix those connections.

Also bear in mind that some of the Jamma connections may not be connected. Jamma has more pins than the Konami connector, so some are redundant. Perhaps a picture of the Bob Roberts adapter would help shed some light on what's going on. Can you put a detailed picture of it up?
 
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IMG_20111206_174432.jpg
IMG_20111206_174422.jpg
hope this works. Sending from phone while riding in car.
.
 
Alright - the adapter looks good to me. So, assuming your Jamma harness is good, and you've got -5V, +5V, and +12V coming from your power supply to the proper places on the adapter, this shoud be good.

I still believe that this is a memory voltage issue, so...

Take your multimeter and test the voltages on some of the 4116 RAM chips. Here is a pinout for those chips:

m5k4116ppinout.jpg


Put your black lead on pin 16 (Vss (GND)) and measure the voltage to pins 1, 8, and 9 on a few of those chips to see if they are getting the proper power.

And here is the location (inside the green box) of some of those chips:


tutankhampcbramsection.jpg
 
One more thing to check -- hard to tell from the picture:

tutankhampartsbobroberts.jpg
 
Had a chance to mess with the cab. sure enough there was a break in the -5 on the jamma harness. got that fixed. now game screen comes up properly.
got the controls wired up to see if it plays ok and sound works! Awesome

thanks a whole bunch for helping sort this out. very much appreciated. cheers!

by the way, QuarterArcade is top notch. He sent me a message just to say if I couldn't figure it out he'd take a look. That's very impressive service. Now to save for the next PCB from them......hmmmm, Jungle King? ;)
 
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