Our paste printers are having difficulty recognizing the fiducials on an older board that has been running for years.  The board house is applying HASL and because of that, as most are aware, the solder covering the fiducial pad will be inconsistent.  I'm told that this has been an ongoing issue and the problem comes and goes.
We have three printers that are older that do not allow us to adjust the lighting.

I can't remember if we can have the board house apply HASL on just the component pads and not the fiducials?  Any other suggestions?

Thanks,
Jim



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