after many months of waiting I finally received my SM 2.0 A350 today. The assembly was a joyful task
until I installed the 3D printhead and performed the automatic bed levelling as suggested by menu.
I suspect the problem is huge because when SM starts the procedure it begins the levelling from the front left and the centre and right, BUT that’s it. While the unit is trying to adjust the bed it stops and a horrific mechanical noice appear for 1 sec. from one of the Y linear module. Is there something I’ve done incorrectly while setting it up ? Is there something I should have done differently ? I have sent a message to Snapmaker support addressing the problem, but wanted to get your opinion too. Any similar problems among users?
I took the heated bed off and with the control moved the frame in XYZ directions. Everything else works but when I moved the frame to the position showed in the picture I cannot move it back. Pushing home position won’t work either. Y-linear modules can be moved by hand when power is switched off. I assume they move at the same speed - it seems the Y-linear modules only move in one direction.
Make sure all cables are plugged in properly. Also unmount the aluminum frame on both y-rails and see if they make sure they move OK.
As you already contacted support, make a video of what is happening and add that to your ticket. They will ask you to provide images and video anyway. You might have bad luck and have gotten a bad linear module. Or it could have been damaged in transport.
I hope they’ll get back to you soon. Haven’t seen a similar issue on the forum yet.
but it doesn’t sound like a problem with the modules then if both of them are “stuck” in one direction.
You could swap the z-axis modules and y-axis modules (don’t have to unmount anything, just switch the cables coming from the modules.
If the problem then also switches from one axis to the other you know for sure it’s not the module but either it’s in the controller or on of the splitters. Which you can swap as well to determine if it is one of the splitters. I think I do remember one issue of a bad splitter on the forum.
There seem to be some similarities with this topic. But the end conclusion/solution was never posted:
Yes, there is an article about that. PLEASE fill us in on the success or failure of this. I dont think theres anything else we can do for you (support would have to get involved) but we at least want to know if that worked for you.
a couple of questions before troubleshooting according to the article. Connection with Luban between computer and SM, does it have to be with a PC ? I only have iMac. The other question is the connection. Can I do the troubleshooting over WiFi ?
Well, I located the Y-linear module that caused the problem module from the base and open the black end cap to have a look inside. Comparing to the pictures in the troubleshooting article the switch looked ok, however I found a lot of grease packed around the switch, especially between the two parts making the switch mechanism. Not knowing better, I removed the excessive grease and tested the switch to hear a klick -sound. Now, one hour later I tested both Y-linear modules and they work just fine. Putting everything back together again I finally managed to do the automatic bed alignment and up till now it seems to work normally. I believe, though, the switch problem might haunt me in the future. Even if I haven’t done anything yet with SM, I feel like a champ overcoming this problem.
Many thanks for the great support you guys have given me. Your are awesome !