Help needed please yellow light on

So I shut down my glowforge pro last night and then turned it back on this morning the arm moved to the middle and the yellow light came on. my printer head is new and my carriage plate. its clean. All lenses cleaned. I got no error message just turned machine on and the light came on. if I turn it off and on the printer head will not move. if i unplug it turn it off it will move to the middle but still the light comes on. Please if anyone can help.

I would double check the white cable and make sure it is securely clicked in. Also clean the contact points of the printhead.

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Most likely this ^^^

Too much scrubbing on the lid cable to the camera or issues there also possible.