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K40 power supply problem. : r/lasercutting
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On the K40 PSU should K+ or K- go to the test fire button? : r/lasercutting
![blue-box-guide [smoothieware.org]](https://smoothieware.org/_media/psu.png "blue-box-guide [smoothieware.org]")
blue-box-guide [smoothieware.org]
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