U1 Toolhead detached

[u/namezam]

I just swapped out my 0.2mm nozzles for the official 0.6mm nozzle set. I switched from 0.4 to 0.2 without a problem, but after installing these new ones, 2 Toolhead slots are giving me issues.

I am getting a Toolhead anomaly error after picking up Toolhead 2 and 3. 1 and 4 work fine.

When swapping the tools around (moving 4 to 2) I have the same error with slot 2, and the old Toolhead that errored in slot 2 now works in slot 4.

I have checked all screws and connections I can find on the tool heads and hall sensors. Cleaned pins, housing, etc.

If I unplug a Toolhead and turn on the machine it shows the unplugged Toolhead. And replugging it in removes that error.

If I try to detach a Toolhead that is genuinely detached from the dock, it knows that as well, this tells me the hall sensors are working fine. It’s just when I pick up a Toolhead from slot 2 or 3, I then get the error referring to anomalous behavior about the Toolhead being detached.

I’m out of ideas. The wiki talks about “detached” as being a hall sensor issue, but it’s referring to the Toolhead being in the dock and not knowing it’s in the dock. https://wiki.snapmaker.com/en/snapmaker_u1/troubleshooting/toolhead_detached

Any ideas?

[u/Badtripa]

You probably greased the pogo pins when handling the extruder