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Table of Contents
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
Misaligned homing dots
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!)
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*
Misaligned nozzles
In the nozzle programming/teaching menu, we had a new problem, which was that the nozzles were not centered
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 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.
Feeder not advancing
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
Un-pulled tape cover
If you're getting pick-up misses, it may be because the tape cover is not pulling away properly. We found two things that caused this:
- The clear rubber roller that the tape runs over on the way to the pickup reel works its way off the bracket and jams up against the nearby feeder. This means it doesnt advance. To fix, remove the feeder, and use an awl or small flathead to loosen the clear plastic tubing and push it back on all the way
- Some reels have tape covers that have been spliced together (probably the factory ran out of tape cover before finishing the reel). The splice tends to break and needs to be fixed by hand
