Originally Posted by
lasik2025
leaveme,
if you power everything off and then swap motors between driver chips by moving the green connectors around and then try to jog, does the problem follow the x axis motor or the x axis driver circuit ?
since you checked and chip did not seem too hot, I would suspect some other issue like a motor wire coming loose (from vibration running at 40 inch/min maybe).
an oscilliscope would be best, but if you have a voltmeter you can still check the levels on the driver chip control pins to look for a problem. when the motor is not being told to move you should see a stable reading of app 0v or 5v on the ENABLE, DIR, CLOCK pins; when jogging you should be able to get a stable 0v or 5v on DIR then change the direction of jog and the DIR should change to the opposite state and be stable. On my board, I was able to see ENABLE change with a voltmeter by changing EMC2/Mach3 from machine on to machine off. On CLOCK, the voltmeter would show unstable reading or measure some middle ground value 1.5v to 3.5v while jogging but 0v or 5v when not jogging. it may also be illuminating to look at the driver chip signals of a working axis and then compare those signals to the non-working axis.
lasik2025