Electronics Forum | Wed Dec 20 07:08:51 EST 2006 | cyber_wolf
We have had this happen. The Z-ball screws do go bad in IP3's. We replaced the ball screw and the problem went away. As mentioned improper belt tension will cause the servo to make loud noises. But if you say the movement is rough, then the ball scr
Electronics Forum | Wed Dec 20 17:00:29 EST 2006 | aj
Have you contactd your Fuji Engineer for advise. I would really look at the z-axis belt setup before investing that sort of money. We had the exact problem here and that is all it was. aj...
Electronics Forum | Wed Dec 20 17:03:50 EST 2006 | aj
By the way , changing the ball screw will also sort your problem out because you will have to carry out the Z-axis setup ( belt tension etc ) as part of the change. so it is worth a shot to carry out the setup and see how it goes! you will have nothi
Electronics Forum | Tue Dec 19 03:37:12 EST 2006 | aj
Not quite sure what your problem is by your explanation but if you are seeing component shifting with no real trend , I would be confident that it will be down to the Clamping of the board. Make sure the adjustable rail is secure and not moving sligh
Electronics Forum | Wed Dec 20 07:54:13 EST 2006 | davef
We pipe a nonfunctional witness mark on every board. We inspect the witness mark. Ours consists of six pairs of dots arranged in a five-pointed star pattern. Again, consider paying attention to the cause of the problem. Your machine is NOT operat
Electronics Forum | Tue Dec 19 04:04:52 EST 2006 | ec
Hi, I been facing this problem in the past...... Now, I have change to printing. In the past, glue dotting is my bottom neck and need to use 2 glue dotting machine....and now, with printing proces, no more bottom neck in glue process and quality als
Electronics Forum | Wed Jan 03 12:08:43 EST 2007 | patrickbruneel
What I would suggest trying is to only use your bottom heaters in your oven. In this way the board will receive the majority of the heat and conduct the heat to the component. Since your components are small and your board is more then twice the stan
Electronics Forum | Thu Jan 04 10:07:07 EST 2007 | Mario Scalzo, CSMTPE
davef is correct. The solder is indeed wicking to the hottest part of the leads. Slowing down the conveyor will alloy the board and component to come to temperature at a lower delta T.
Electronics Forum | Wed Jan 17 21:32:14 EST 2007 | Jnet
Agree. Drop the conveyor speed.....and drop the zone temps accordingly. This should allow the board leads and components heat at a more even rate and stop the over temp. issues. I do not suggest running only the bottom heaters this can bring new issu
Electronics Forum | Thu Jan 18 05:28:36 EST 2007 | pavel_murtishev
Good afternoon, Profile your oven. Try to increase soak zone as much as possible. This must equalize temperature across the board and leads to prevent wicking. �Spike� as slow as possible after long soak. Do you use tooling for this PWB in productio
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