Neff C77V60N2 cleaning and grinding mechanism

Hi All,
We've just moved in to a house that has a Neff C77V60N2GB/09 fully automatic coffee machine, so I'm looking at getting it back in to commission, as apparently it hasn't been even turned on for over 2 years!
There was still coffee beans, and mouldy coffee grounds inside...

I've managed to get everything obvious off it to clean properly including the brewing unit, but can't see how to access the grinding mechanism, as suspect there is some pretty yucky stuff inside.

I'm not afraid to go at it with a screwdriver, but first wondered if anyone had any experience with this they could share before I did?

Any help greatly appreciated!
Many thanks

If you have already got to the brew group, then you have already pulled out the machine. The grinder is on top of the machine, here in the video to see quite well

I would recommend cleaning the grinder with a grinder cleaner like the one from ceragol. You can get it cheap on Amazon https://www.amazon.de/ceragol-ultra-Mahlwerksreiniger-2-Sachets/dp/B0183YTMI0

In addition, run the descaling and cleaning program, suitable agents are also available from ceragol.