SF A2 head

[Yavox]

I have noticed some dust parts on the glass from the inside. They probably were there before, I just did not pay attention. Is it possible to unscrew the front part of A2 head from the rest? It looks like the head consists of two parts and I tried, but either I am not strong enough or it is a wrong way to go...

 

[geonex]

Rather than unscrew the two portions of the head, I'd just remove the head, carefully remove the incan lamp assembly (which will likely fall out when you remove the head, if you're not careful) and hit the head/reflector with a little compressed air.

If you're into overkill, you could also remove the LEDs and board by removing the three tiny screws that hold it into place and then blowing air into the head, but that's probably pretty unnecessary.