78 Installing System Components
Opening and Closing the System
  WARNING: Whenever you need to lift the system, get others to assist you. To 
avoid injury, do not attempt to lift the system by yourself. 
 CAUTION: Many repairs may only be done by a certified service technician. You 
should only perform troubleshooting and simple repairs as authorized in your 
product documentation, or as directed by the online or telephone service and 
support team. Damage due to servicing that is not authorized by Dell is not covered 
by your warranty. Read and follow the safety instructions that came with the 
product.
Opening the System
1
Turn off the system and attached peripherals, and disconnect the system 
from the electrical outlet and peripherals.
2
Rotate the latch release lock counter clockwise to the unlocked position. 
See Figure 3-3.
3
Grasp the cover on both sides while pressing your thumbs on the latch 
release lock and the indent. Carefully slide the cover toward the back of 
the system, and lift it away from the system. See Figure 3-3.
R310HOM.book  Page 78  Thursday, March 4, 2010  1:03 AM