Dell R420xr Personal Computer User Manual


 
5. Grasp the cover on both sides and lift the cover away from the system.
Figure 9. Opening and Closing the System
1. system cover
2. Mylar adhesive sheaths (5)
3. thumb screws (2)
4. captive screws (3)
5. tab
Closing The System
1. Place the cover onto the chassis and offset the cover slightly back so that it clears the chassis hooks
and lays flush on the chassis.
2. Tighten the thumb screws that secure the back of the system cover to the chassis.
3. Tighten the captive screws on the top of the system cover.
4. If applicable, affix the Mylar adhesive sheaths over the vents present on the top of the system cover.
NOTE: The Mylar adhesive sheaths protect the system by preventing unfiltered air and other
contaminants from entering the system. The Mylar adhesive sheaths are included with the bezel
kit.
5. Reconnect the system to its electrical outlet and turn the system on, including any attached
peripherals.
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