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mdcpickandplace:troubleshoot

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mdcpickandplace:troubleshoot [2009/11/04 21:29]
ladyada
mdcpickandplace:troubleshoot [2016/01/28 18:05]
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-===== Bad USB cable ===== 
  
-When we first started up the software, it didnt display the huge red "ON LINE" button and said it couldn'​t find the "KPS card" due to a bad USB extension cable. Don't forget also to have the pick and place on before the computer so that it auto-starts correctly 
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-===== Misaligned homing dots ===== 
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-We also had a problem where the machine would not '​HOME'​ properly. If the homing dots aren't where thinks they should be the machine freaks out and quits. Turns out that our homing-dot brackets were not tightened before shipment (hey it happens!) 
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-{{:​mdcpickandplace:​homingright.jpg|}} 
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-As a result, when moving the machine, the bracket moved. We shifted the bracket back so the homing dot was where the machine looked for it and it started homing again. *whew* 
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-===== Misaligned nozzles ===== 
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-In the nozzle programming/​teaching menu, we had a new problem, which was that the nozzles were not centered 
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-{{:​mdcpickandplace:​nozzlepos.jpg|}} 
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-It turns out this was because when we re-set the homing dots (above) they were off slightly and the machine had a bad skew calculation. The homing dots are actually there to align the two Y motors (since they can be out of sync). As a result we needed to reset the homing dots using {{:​mdcpickandplace:​mdc_luna_mark_adjustment.pdf|special instructions}} by gently aligning the Y motors, then retraining it on the new dots. Once we did this the nozzles came back into alignment. 
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-===== Feeder not advancing ===== 
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-We had some problems with our feeder not advancing consistently despite setting the compressor at 70-75 PSI. This caused Pick-up Miss failures. By upping it to 85-90 PSI we were able to get much more consistent advancing 
/home/ladyada/public_html/wiki/data/pages/mdcpickandplace/troubleshoot.txt · Last modified: 2016/01/28 18:05 (external edit)