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First thing I did after assembly and powering up the machine was to manually trigger each of the X,Y,Z home/limit switches. Noticed there was a problem with the Y-axis switches not working. Checked these with my meter and all OK. In the end the problem was corrected by reversing the two wires going into the green Y-axis connector plug of the controller. Ran a homing cycle and we're all good to go!
After running the machine for a while I was noticing the Y-1 side of the dual Y-axes had a slight wobble in its lead screw. Tried adjusting it out but nothing you can really do. First thoughts were the lead screw was bent? Decided to contact SainSmart service and explained the situation to them. Hong promptly got back, within a day, and asked if I could send a video clip to verify the wobble. From the video they confirmed the problem and would be sending out a new lead screw. In the mean time I asked Hong if he could provide any details for the replacement process. I was sent a link to download a video . . Very helpful, thanks!
Around ten days later the new LS arrived. A quick roll on a glass table confirmed it was true. Did the same rolling test with the old one and it just rocked back and forth. Following their guide it took around an hour or so to install the new lead screw. It went well and was a pretty easy install. Everything goes in from the front side of the machine after removing that sides end plate. Can't say enough about the service from Sain Smart and Hong! They do stand behind their products and it's comforting to know help is on the way if needed!
Polly
