Electronics Forum | Fri Oct 28 06:55:53 EDT 2005 | pavel_murtishev
Hello! I suspect that our MPM AP25 has separation problems (poor stencil � PCB separation). I observe a lot of �dog ears� after print stroke. And this is 100% machine problem, I�m sure. What machine parts should I check first time to avoid separatio
Electronics Forum | Wed Nov 02 01:53:41 EST 2005 | pavel_murtishev
Hello, Thank you for answer. We are using second hand machine. What do you mean saying that �stencil is not height on all 4 corners�? Does it have some inclination between corners? I mean that three corners of stencil are matching with PCB fine and
Electronics Forum | Mon Oct 31 03:35:41 EST 2005 | pavel_murtishev
Good day, I simply switched the production from MPM to other printing machine. Defect disappeared. Process parameters and process materials were the same. Stencil was the same. �Dog hides� somewhere in the machine. BR, Pavel
Electronics Forum | Fri Oct 28 10:04:02 EDT 2005 | valuems
Hello Since we have a few years experience with these printers we might be able to help. Is these problems always with the same components? Is this a new type of paste for you? Is there tape on the bottom of the stencil? And how much pressure do
Electronics Forum | Fri Oct 28 08:37:06 EDT 2005 | pavel_murtishev
Once again, it isn�t the process problem. It�s machine problem. I�ve tried to change all of the parameters: printing speed, printing pressure, snap-off speed, snap-off distance, etc. No any effect. Defect still exists with different process parameter
Electronics Forum | Mon Oct 31 14:46:54 EST 2005 | valuems
Hello Did you just buy this machine on the used market? There is a possibility that the stencil is not height on all 4 corners ( from the center nest assembly. I don't under stand " the under stencil wiper is not working correctly". This is about
Electronics Forum | Thu Nov 03 01:38:40 EST 2005 | fastek
"Harry Does Russia"......in a theater near you! Seriously Pavel, Harry is real good on these machines. Why don't you two exchange e-mail addresses...take this off-line and I'm certain he will be able to fix this problem for you.
Electronics Forum | Thu Nov 03 04:15:21 EST 2005 | valuems
Hello Well this is your lucky day, I would be glad to stop in russia on my way to california. And thanks rick I appreciate it. Would be glad to give him my e-mail, it is vmsales@alltel.net. Down force is very difficult to explain and MPM should no
Electronics Forum | Mon Oct 31 03:42:47 EST 2005 | pavel_murtishev
Good day, Problem appears only with 0.5mm pitch components. Print quality for these components is unacceptable. Paste type isn�t new for us. No any tape on the bottom of the stencil. We apply enough pressure on squeegees, stencil remains clear after
Electronics Forum | Wed Nov 02 08:16:31 EST 2005 | pavel_murtishev
Hi! It goes away only for one or two print strokes. After them the problem arises again. After first print stroke I inspect a lot of �dog ears� and a lot of paste not released from the stencil (it�s not a stencil design problem, other machine prints
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