Electronics Forum | Wed Sep 04 12:01:59 EDT 2019 | slthomas
My recollection of the 4c is fuzzy but I know that there's a ribbon cable on the head that gets some abuse when the head rotates. Seems like mine would eventually break at the crimps and I had to replace it a few times. Eventually I bought the parts
Electronics Forum | Tue Oct 10 12:32:08 EDT 2006 | RLM
Larry, I have had this problem in the past. It turns out that there wasn't enough "Z" on our nozzle pickup locations. When a nozzle change occured the nozzle would not be fully seated on the Z-rod. When the Z-rod is driven down to pick the first part
Electronics Forum | Tue Oct 10 11:06:04 EDT 2006 | lheiss
Hi All, I wasn't sure how this would turn out until I ran some production. As I suspected, after every nozzle change the machine dumps the first 3 pickups, checks the nozzle height again (function 30?) and then begins placing with correction with n
Electronics Forum | Wed Sep 04 13:32:22 EDT 2019 | bobpan
Try these things: 1. Do a function 30....your nozzle height should consistently be around 200 +/-20....but whatever number it does find it shouldn't change. (with nozzle on) 2. Most times its the z-bellows....an old z bellows that has a worn out spri
Electronics Forum | Thu Sep 05 07:14:16 EDT 2019 | smrsteve
Hello Bobpan, Thanks for the suggestions. Sorry I didn't reply yesterday as I'd gone home - I'm in the UK, so I'm guessing there's a time difference. Okay, I found the control to turn off the vacuum verify - it's SHIFT - SWITCH/VERIFY. Makes no di
Electronics Forum | Wed Sep 04 09:47:41 EDT 2019 | smrsteve
Hello All, I've just bought a Quad 4c pick & place machine. It's so close to actually building boards, but just doesn't quite get there. I was wondering if there's somebody out there with experience of these machines that might be able to help...?
Electronics Forum | Wed Sep 04 13:58:36 EDT 2019 | smrsteve
Hello Bobpan, Thanks for the response. 1. Function 30 gives me a consistent 182-185, even after nozzle changes. I can vary this by changing mod code 15 and I have been advised to aim for 90-110, but it doesn't seem to make any difference so I've go
Electronics Forum | Wed Sep 27 16:37:11 EDT 2006 | avalancher
That's funny... I thought that the Quads were DESIGNED to PRETEND TO PLACE PARTS..... you mean, you actually gone one to work? I'm impressed.
Electronics Forum | Tue Oct 03 05:59:50 EDT 2006 | bobpan
If its only moving 2 mils the nozzle is seated correctly.
Electronics Forum | Tue Sep 26 10:44:28 EDT 2006 | Brad Courtemanche
Hi larry, don't know if you resolved your problem but if machine is picking part three times, rejecting all three but places number fourth your nozzle pickup is misaligned very slightly. During the first three pickups the nozzle is finally seating it
