how do I take off the protective screen on the philips 46pp9302 (1 Viewer)

[Dave_vega]

hello..I have some bits of dust behind my protective screen..now I cannot figure out how to take the screen off..It would seem that the whole gray assembly comes off, but i don't want to break anything by pulling on it..can anyone help me with this? thanks

 

[Jimi C]

chain saw