Uncase a 2830

Hi,<br/>
I've received an used 2860 off eBay, it is working okay. It has been cleaned but there is some dirt and dust in the top of the case, I would like to take the top of the case off to give it a good clean. Is there any way to do this, are there screws under the rubber feet?<br/>
<br/>
Thanks,<br/>
Gerald