Green LED on one key of the mini keyboard?

My A4 mkii has a green color LED on the E key of the mini keyboard. Not sure if this is indicating anything at all, or just an error (?!). I can’t find anything on the manual. Is this normal? Thanks

I’m not near my machine yet, but I guess that’s either related to “TRK KEY NOTE” or the (temporary) TRANSPOSE functionality.

Thank you! I know it’s not the transpose, as that functionality works properly (LED turns red). PLOCKs, also show the default not in red. When I change the TRK KEY NOTE nothing happens. It’s weird.

Is this really green or more a yellowish hue? As far as I know, the mk2 devices have RGB-leds. If the machine wants to use white, but the blue component is defective, the result will be yellow. Using red works fine as this doesn’t use the blue led.
If you enter test mode during startup, you should be able to test all colors separately (at least on mk1 one can).

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It’s green. Thank you for that info! I will check that out.

Just tested it, and you’re right. Blue component is not working. Thank you for shedding a (LED) light into this issue!