Electronics Forum | Mon Jul 18 18:02:31 EDT 2005 | seaK
Thanks for the response..... The solder is actually printed okay prior to SMT.... And after placing, found missing solders at middle terminals of 0408 resistor arrays.... Package library is checked, component spec looks fine... I am suspecting the
Electronics Forum | Fri Jul 15 16:53:56 EDT 2005 | davef
Questions are: * Are you sure there was solder on the pad prior to placing the component? * Is there solder on the lead, but not on the pad?
Electronics Forum | Tue Jul 19 06:17:20 EDT 2005 | Rob
Have you tried a smaller nozzle? I'm wondering if the air is escaping through the cut outs on the device on the air kiss stage.
Electronics Forum | Tue Jul 19 12:07:03 EDT 2005 | CLampron
Sr tech, It is in the PCB header information. F2 from the layout editor then F1 to view through the camera. Regards Chris
Electronics Forum | Tue Jul 19 12:10:04 EDT 2005 | CLampron
Sr. tech, The mount tool test position is what I am refering to. The function of this is to determine the placement plane of the board. The mount plane will change if the board is thicker so thickness is relavent. regards Chris
Electronics Forum | Thu Jul 21 11:13:11 EDT 2005 | Scott B
Have you tried running the machine in stepper mode (Ctrl+S). This will allow you to hold and view the machine at each stage of the placement cycle. This may help determine if it is false placement, vacuum or kiss-off. We find this useful when trying
Electronics Forum | Fri Jul 15 14:16:09 EDT 2005 | seaK
We have this problem for a long time. It happens to 3 new Mydata MY-9 machine. When pick and place resistor array 0408 (different value, top and bottom side), the solder paste in the middle two terminals missing occasionally. Thought it's because noz
Electronics Forum | Wed Jul 20 02:48:43 EDT 2005 | grantp
Hi, What's really interesting about your photos is there is solder paste on top of the component. If it was blowing the solder off the board you would see solder paste splatter away from the component. But the solder paste is on top of the compon
Electronics Forum | Tue Jul 19 09:45:51 EDT 2005 | cyber_wolf
I have seen this problem on Mydata machines before. I am very sure that your missing paste is being caused by the placement machine. Check these things : 1. There is a small white check valve on the pressure side of the vacuum pump. Make sure it is
Electronics Forum | Tue Jul 19 11:53:04 EDT 2005 | CLampron
seaK, Check your PCB Thickness check in your program. See if it is checking the PCB at this location. Each board the machine will check to find the baseline thickness of each board run. It does this with a tool. I'm thinking this may be it because I
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