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Ipac4 issues
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negsense:
I just finished wiring up my ipac4 into my cabinet and fired it up. Everything looked great until I realized for some reason when I pressed 1p coin, the Ipac outputs both keys 1 & 5. There were a ton of other problems too with buttons not working and joystick switches. Since it was my first time wiring something I decided to get each key working one by one until I figured out the problem. After disconnecting everything but the 1p coin button, I only grounded one key and hooked up ground and 1p coin. When I press the button I either get nothing or a string of 1 and 5 together, like 5 is being held down and 1 is being pressed every once in a while. Again, this is the only key hooked up, there are no other wires going into my ipac.

I also thought it might be driver issues, so I tried it on a second machine and got the same result. Details are:

ipac 4
OS: XP for cabinet and Windows 7 machine for verification

Any suggestion would be appreciated.

sandheaver:
Make sure that you're wiring up the correct terminals on the buttons.

This kind of thing happens all the time when you wire up the microswitches wrong. 

http://arcadecontrols.com/images/microswitch_closeup_labelled2.JPG

In that image it is the bottom two terminals that you must wire up.  IGNORE the top one.  It does not matter which you wire as ground.
negsense:
Just took a look and I had the ground on COMMON and the wire to the ipac on NO. This is what I used to wire up the buttons:

http://www.arcadecab.com/CabinetPlans2/CabinetPlans2_Wiring_CP.html

So when I take out the switch and just press the wire to the ground on the ipac and I get both 1's and 5's. I also get 2 letters at a time on player 3 up. The reason I thought I tried it that was is I thought the point of the switch was to connect the wire coming out of the ipac to the ground making the circuit complete.
Dekieon:
I would download the ipac software and reset the ipac, and see if it is still happening
negsense:
I tried that, the first time it failed, I restarted and reinstalled the ipac software and tried to reset it, did not help.
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