CAUTION: System components and electronic circuit boards can be damaged by 
discharge of static electricity. 
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. 
To avoid injury to yourself or damage to system, follow these guidelines: 
  Always disconnect the system from the power outlet whenever you are 
working inside the system. 
  If possible, wear a grounded wrist strap as you work inside the system. 
Or discharge any static electricity by touching the bare metal chassis of 
system case, or the bare metal body of any other grounded appliance. 
  Hold electronic circuit boards by the edges only. Do not touch the 
components on the board unless it is necessary to do so. Do not flex or 
stress the circuit board. 
  Leave all components inside the static-proof packaging until you are 
ready to use the component for the installation. 
Recommended Tools 
  #1 Phillips screwdriver 
  #2 Phillips screwdriver