Electronics Forum | Mon Jun 12 11:04:20 EDT 2017 | bobpan
So what your telling me is kind of vague. Does the machine home and go to the front left corner of the machine? If it does....this could be a quad align problem....meaning dirt on the lens or so-forth. You should watch the heads homing in the z-axi
Electronics Forum | Mon Jun 12 21:16:41 EDT 2017 | kahrpr
you can not just take the motor off and change it. the motors have a home pulse singnial. the motor has to be in a certian position the home pulse position when the flag hits the sensor. When you remove the motor you have to mark the motor gear when
Electronics Forum | Wed Jun 14 01:52:57 EDT 2017 | bukas
I have been using IPA for more than 3 years with no damage to stencils. what some cleaning solvent manufacturers claim is that you get better separation with their products, some even recommend nitrating stencil to enhance separation and avoid paste
Electronics Forum | Wed Jun 14 09:34:25 EDT 2017 | cyber_wolf
In my experience there is no need for wet wiping stencils. We run 0201'and micro BGA's daily with no issues. If you are having paste release issues, I would be looking at other things. Aperture area aspect ratio, aperture design, land design, sold
Electronics Forum | Wed Jun 14 10:14:20 EDT 2017 | emeto
IPA is flammable and that is why no company will tell you to use. I've used many solutions and IPA works just as fine as any other solution if not better. Definitely use solvent in your cleaning. If it was meant to clean without solvent we wouldn't t
Electronics Forum | Wed Jun 14 23:11:53 EDT 2017 | claire_08
sorry, I can't give you best solution for IPA versus stencil cleaning. But if you need new stencil, I can recommend you one, five-star praise supplier, they have stencil or with frame, various size at cheap price below 30% market price http://www.pcb
Electronics Forum | Mon Jul 24 12:57:53 EDT 2017 | shaukatbhutto
WELLPCB PTY LTD is an Australia daughter company of Uniwell Circuits Co., Ltd, which have two modern PCB factories, founded in April, 2007. WELLPCB is focusing on online prototypes orders, to meet the requirement of High Quality, low cost, fast de
Electronics Forum | Wed Jun 14 18:33:39 EDT 2017 | caurbach
1. Why isn't an electrician doing this? 2. Did you measure phase-to-phase voltage between each phase at the machine? 3. Phase rotation only affects the 3-phase motors. If it's out of sequence, the motors will spin backwards but everything else sho
Electronics Forum | Thu Jun 15 14:14:18 EDT 2017 | pfuhrman
I have seen a few references in this forum to an old study (1980s?) by Roger Wild at IBM. But I cannot find a published report or usable reference to one. davef mentioned the SMTnet archives as a possible source, but that has also been a dead end.
Electronics Forum | Mon Jun 19 09:47:01 EDT 2017 | dleeper
Quad made an auger style dispenser that mounted to the pick and place head. A long time ago, in CM far far away, I tried to add one to a Quad 4C but could never get the damn thing to work. The folks at PPM http://www.goppm.com/ might be able to he
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