Expander board problem

[Alastair]

We are now installing our 4th omega-tek MK-70 Expander board in our centre. Absolutly luv them. But have come across a problem.

Upon installing the board, turned on machine and have found that we have no shortened X cycle or 7 10 pick off etc. Firstly we swapped over the chassis onto another lane (which is modified for the MK-70 board) and we proved that the board and chassis are ok.

Upon returning the chassis back to the original lane, noticed that we had no pindication lights lit up on the board. So changed out the cable which connects from the expander into the curtain wall chassis. (running accu score cwc).

Now we have pindication lights on the board, but all 4 of the leds are lit constantly. Also the main power led at the top right is very dim, as if it is trying to read info from the camera all the time? [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img]

So, have swapped out curtain wall chassis, checked all pins in plugs,swaped out camera units, but still the same problem occurs. All pindication lights lit, and no x cycle etc.
[img]/content/btubb/images/%%GRAEMLIN_URL%%/mad.gif[/img]

Anyone got any ideas to tracing down this fault?

PS. Checked for any bad grounds in table using my new "C2A tester", made by cybernetics. Quite impressed with it!

[8270king]

Re: Expander board problem

Make sure you green jumper cable on the back of the expander goes on the correct spot on the MK board......goofy stuff happens if they did not put the block out pin in the cable.

Did the chassis work correctly on another machine already modified?

If it is in the chassis make sure you installed the correct # 3 board with the 12 V wire.

JK

[Alastair]

Re: Expander board problem

Yes the green cable has the blocked out pin.
The chassis and board work, as have proven this by swapping chassis onto another lane which already runs an expander.
The small card pc3 has been connected to the 12 volt line.

[8270king]

Re: Expander board problem

Did you connect the expander wire on upside down?....the grey wire from the accu cable......where is the jumper?.....are you using the camera only?

JK

[Alastair]

Re: Expander board problem

Yes, the cable is the correct way round. The jumper is in the position to read off the camera.

[LancerLanesMech]

Re: Expander board problem

I would take an already working chassis and test it on this lane along with testing that chassis on a working lane. If both chassis work on a different lane, but neither work on that lane you know the problem doesn't lie in the boards or the chassis. Then you go from there. Might be a problem with the power cable for the expander which would explain the dim upper light which simply tell you if the expander is getting power. Keep us posted.

[8270king]

Re: Expander board problem

There are 4 wires in the cable......only 3 of them are utilized.

I have the info at work.....I will post tomorrow.

JK

[THE HAMMER]

Re: Expander board problem

I helped Alastair install this expander (lane 13)

The chassie and boards are OK as they work on other lanes. We have changed the camera + curtain wall problem the same (no x cycle, no 7-10 pick off). Lane 14's expander works so that tells me its not the camera or curtain wall anyway (i think! [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img] ). When this machine was tested all table wire was still in place but the jumper on expander was in position to read off the camera, could there be a ground? (c2a tester says not!). [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img]

NOTHING HITS LIKE A HAMMER

[ewen]

Re: Expander board problem

Hammer, have you tried to run the machine with the table cable disconnected?
Also , did you perform the C1 plug modification ?

[THE HAMMER]

Re: Expander board problem

C1 plug is ok, table wires still pluged in. Correct me if i'm wrong, if the jumper is set to read from the camera the table cable will not come into play? I only have 4 out of 16 lanes with expanders so i'm still learning [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img] . Any help would be a great deal of help [img]/content/btubb/images/%%GRAEMLIN_URL%%/smile.gif[/img] .

HAMMER [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]

[ewen]

Re: Expander board problem

Hammer,
I installed 28 expander boards in a 70 house about 4 years ago. I dont remember a jumper wire on the ones that I installed. The instructions indicated that the table cable HAD to be disconnected. I called the manufacturer and asked them how the table was going to run without the GP connection. They told me to jumper it out in the wire way. [img]/content/btubb/images/%%GRAEMLIN_URL%%/eek.gif[/img]
I do remember that the C1 plug had to be modified to allow the sweep to reverse on a 7-10 pick off. Do you have a phone # for the manufacturer? I would give them a call.
Mark

[LancerLanesMech]

Re: Expander board problem

The jumper he is refering to is not a wire. It's the little yellow plug in deal. To run without the table wires hooked up it needs to be in the lower position. However, the table cable can still come into play. If a grounded cell is detected (doesn't matter which one) it will tell the chassis the 2 pin is still there. The sweep goes through as if it is going to do short strike cycle, but the spot solenoid doesn't engage. What I am currently doing is removing the table wires, but instead of jumping the GP switch in the wireway, I'm running just the GP switch wires so it can still be active.

I admit I'm pretty confused with your problem as my expanders are hooked to Qubica scoring so I'm trying to envision the setup. The jumper position on the expander doesn't matter, you will still get short strike and gutter ball features either way. If it's in the upper position, it can still read a strike when cycled from the back panel, but you still get the extra features when cycled from the triggering (and also from the cushion switch I think, but ours are not hooked up.) I would swap as many components out one by one from a working pair as possible (CPU, camera, cables, LIU?? not necessarily in that order [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img] from 11&12 or 15&16.) Also just to ultimately confirm, I would see if the lane 14 chassis has the same problem when hooked up to 13 instead of just trying 13 on 14. Double check the C-1 conversion (location of wires & make sure they're fastened properly), look for any debris in the wireway that might be causing a short.

What exactly happens when someone throws a strike or gutter ball? Does the machine set new pins on a strike or just feel & go into ball 2 and leave an empty pindeck? Any pindication lights lit? Take us through step by step of how it goes so we get a better idea of exactly whats happening. I'm interested to see what the deal is here.

[THE HAMMER]

Re: Expander board problem

"CHANGE CHASSIE" Lane 13's chassie works on 14 but 14 will not work on 13.
"STRIKE CYCLE" Machine runs as normal but will not spot pins, like i have a f/c ground (c2a tester found nothing wrong).
"7-10 PICK OFF" Picks up all ten pins as normal (without expander)

**all led's are always on** [img]/content/btubb/images/%%GRAEMLIN_URL%%/confused.gif[/img]

Have changed camera and curtain wall.

MAMMER [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]

[LancerLanesMech]

Re: Expander board problem

Start moving components from a working pair until you find it. Pain in the arse but thats what i'd do at this point. Call manufaturer, or AMF. Jim Hudson I believe is who you need at Omega Tek, I no longer have his number but I can probably get it again.

[Dutch]

Re: Expander board problem

Check the data cable wires that come out of the curtain wall chassis AND where they plug into the top of the Expander card. I’ve seen a miss wired cables come from both Omega tek and AMF. Compare color code to one that works.