Dell Studio 1457 Manuel d'entretien - Page 18

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  Processor Heat Sink Assembly
  Removing the Processor Heat Sink Assembly
  Replacing the Processor Heat Sink Assembly
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:
If you remove the processor heat sink from the computer when the heat sink is hot, do not touch the metal housing of the heat sink.
 
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 your computer).
 
CAUTION:
To help prevent damage to the system board, remove the main battery (see
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.
 Removing the Processor Heat Sink Assembly
 
1. Follow the instructions in
Before You
 
2. Remove the system board (see
 
3. Turn the system board over and loosen the seven captive spring screws that secure the processor heat sink assembly to the system board.
 
4. Lift the processor heat sink assembly off the system board.
1
captive spring screws (7)
 Replacing the Processor Heat Sink Assembly
WARNING:
Before working inside your computer, follow the safety instructions that shipped with your computer.
 
CAUTION:
To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of
your computer's electronic components. You can do so by touching an unpainted metal surface.
NOTE:
The original thermal pad can be reused if the original processor and heat sink are reinstalled together. If either the processor or heat sink is
replaced, use the thermal pad provided in the kit to ensure that thermal conductivity is achieved.
NOTE:
This procedure assumes that you have already removed the processor heat sink and are ready to replace it.
 
1. Follow the instructions in
Before You
Begin.
Removing the System
Board).
2
processor heat sink
Begin.
Removing the
Battery) before working inside the