Sony PCV-LX920 - Manual (Page 134)

Removing the cover
1. Shut down your computer and turn off all peripheral devices, such as your printer.
2. Unplug your computer and any peripheral devices.
3. Remove the AC power cord from the back of the computer.
4. Remove the screw from the top of the rear panel.
5. Holding the top of the system unit firmly, pull the T-lever on the back of unit in the direction shown in the lower
picture.
Removing the cover
Page 134