Replacing the Computer Core in the Enclosure
1.Make sure that the power button gasket is secured inside the recessed area of the computer enclosure. (Figure 9)
Figure 9
Caution: If the power button gasket is not centered correctly in the shell, the computer might not power up. Make sure the power button gasket is level and centered in place. (Figure 10)
Figure 10
Power Mac G4 Cube Top Plate Assembly - 8