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  • Continuous Sweep

    Continuous sweep - started in the middle of league.
    MP chassis, AccuScore+, Westinghouse.

    Will run through both 1st and 2nd ball cycle good, but instead of stopping at 0 after cycle, the sweep just keeps on truckin'. It doesn't even make an effort to stop at 0. Using SA, I can start/stop it on a dime, even going down.

    ~changed chassis
    ~changed stator
    ~changed SA (lever and cam adjustments are good)
    ~checked terminal strip for debris
    ~manually opened/closed Accu sweep arm switch circuit
    ~changed sweep run switch
    ~yelled at it

    For what it's worth, when I looked at it later, I noticed that the gearbox moves a little bit when you start the sweep in the toughest pulls for it, also SB is just a little early.

    Suggestions?
    Chaddy

  • #2
    Re: Continuous Sweep

    when it runs through zero does it stop at 66.

    Comment


    • #3
      Re: Continuous Sweep

      No. I have to run the table and interlock it to make it stop. After I clear the interlock, it's good for one cycle.
      Forgot to mention that it doesn't even stop when you hit Program Zero on the chassis.

      Thanks for responding.

      Comment


      • #4
        Re: Continuous Sweep

        Did you change SB? It can also cause continuous cycle.

        RR

        Comment


        • #5
          Re: Continuous Sweep

          Originally posted by Magic Triangle:
          Continuous sweep - started in the middle of league.
          MP chassis, AccuScore+, Westinghouse.

          Will run through both 1st and 2nd ball cycle good, but instead of stopping at 0 after cycle, the sweep just keeps on truckin'. It doesn't even make an effort to stop at 0. Using SA, I can start/stop it on a dime, even going down.

          ~changed chassis
          ~changed stator
          ~changed SA (lever and cam adjustments are good)
          ~checked terminal strip for debris
          ~manually opened/closed Accu sweep arm switch circuit
          ~changed sweep run switch
          ~yelled at it

          For what it's worth, when I looked at it later, I noticed that the gearbox moves a little bit when you start the sweep in the toughest pulls for it, also SB is just a little early.

          Suggestions?
          Chaddy
          <font size="2" face="Verdana, Helvetica, sans-serif">I've had the same problem a few months ago and it was the SB micro switch.

          Hope this helps
          Mike
          Mike

          Comment


          • #6
            Re: Continuous Sweep

            Depending on the chassis, take a look at your lower contacts on the S-Cont..
            <span style="font-style: italic">Educatio est omnium efficacissima forma rebellionis</span>

            Comment


            • #7
              Re: Continuous Sweep

              SB must surely be the culprit then.

              It makes sense - SB was exhibiting faulty switching though I didn't fully recognize it, and if SB doesn't open, then SA's signal is insignificant because the chassis is waiting for an open from SB first.

              I will keep you posted.

              Chad

              Comment


              • #8
                Re: Continuous Sweep

                Once had a machine which had a constant sweep run. This was caused by a faulty omega-tek board in the chassis. Could be related to your XOP board in the chassis? (unsure which board the MP runs with.)

                This isnt the problem as you have mentioned that you swapped chassis though!
                Bring me the freshest "Mean Green" known to man! Juice on!

                Comment


                • #9
                  Re: Continuous Sweep

                  Place your bets now.
                  BETTING CLOSED!

                  It was not SB.
                  It was not a chassis problem.
                  It was not a coasting problem.
                  It was not an Accu problem.

                  The head mechanic at the center had it fixed before anyone else arrived in the center Monday morning. He's a spectacular mechanic.

                  My good friend Jack Mayfield at Vantage also hit it directly on the head, immediately after I described it to him and stopped talking.

                  I've poured over the block diagram several times and I cannot figure out why it is what it is.

                  There was a piece of insulation that cracked off of the OOR switch wire and had grounded to the frame in the wireway somewhere.

                  Can you explain it? Why would a shorted OS circuit cause a continuous sweep?
                  You can simulate it by hooking the terminals on your OS together. Remember, this is an NC switch!

                  Let us all learn from this!
                  Chad

                  Comment


                  • #10
                    Re: Continuous Sweep

                    Can't Explain it. But I've had the same problem. [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img] Would've directed you in that direction, but I couldn't of explained it properly. COPYCAT [img]/content/btubb/images/%%GRAEMLIN_URL%%/wink.gif[/img]
                    If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it.&quot; -W.C.Fields

                    Comment


                    • #11
                      Re: Continuous Sweep

                      WOW! Great to know! For those of you who are C-23 or Elco Chassis people, the symptoms of grounded OS are:

                      1st Ball Cycle: Sweep drops to 66°, no table run. Mask shows 1st ball.

                      2nd Ball: Sweep drops to 66°, no sweep run through, therefore no spot...no nothin'.

                      Comment

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