Topre key not working

I recently bought a used FC660C off r/mm, but when I used it, the windows key doesn’t work. I googled a little bit and didn’t really find anything besides a post saying the domes could be misaligned. The board has never been open up and I was wondering how I can fix my windows key? I don’t mind opening up the board, but I’m new to the Topre scene and would like some guidance.

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Check the dip switches on the back.
If I remember right, switch 4 disables win key.


Thanks! Switch 4 was indeed disabled and now the window keys works again.