Apple imac 17in 1ghz Servicehandbuch

 iMac (17-inch Flat Panel, 1GHz)  Take Apart - 83

 Housing, Outer Shell, Plastic

3.

Next, carefully separate the outer plastic housing from the neck.

4.

Remove one screw in the base of the Faraday cage to separate the white outer shell 

from the Faraday cage.