Dell Alienware M15x (Early 2011) - Manual (Page 64)

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CHAPTER 15: GRAPHICS CARD HEAT SINK
Graphics Card Heat Sink
WARNING: Before working inside your computer, read the safety
information that shipped with your computer. For additional safety
best practices information, see the Regulatory Compliance Homepage
at www.dell.com/regulatory_compliance.
WARNING: Before performing these procedures, turn off the computer,
disconnect the AC adapter from the electrical outlet and the computer,
disconnect the modem from the wall connector and the computer, and
remove any other external cables from the computer.
CAUTION: Only a certified service technician should perform repairs on
your computer. Damage due to servicing that is not authorized by Dell™
is not covered by your warranty.
CAUTION: To avoid electrostatic discharge, ground yourself by using a
wrist grounding strap or by periodically touching an unpainted metal
surface (such as a connector on the back of the computer).
CAUTION: To help prevent damage to the system board, remove the
main battery (see “Removing the Battery Pack” on page 11) before
working inside the computer.