Heat sink
Description Spare part number
Heat sink (includes a heat sink clip and replacement thermal material) 452227-001
Thermal Material Kits
For use in all countries or regions except Japan and Asia countries and regions
413706-001
For use only in Japan and Asia Pacific countries and regions 445853-001
Before removing the heat sink, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 45).
5. Remove the keyboard (see
Keyboard on page 57).
6. Remove the fan (see
Fan on page 61).
Remove the heat sink:
1. Remove the six Phillips PM2.0×3.0 screws (1) that secure the heat sink and the heat sink retention
clip to the base enclosure.
2. Release the heat sink retention clip (2) by sliding it to the right.
3. Remove the heat sink retention clip (3).
4. Lift the right side of the heat sink (1) to disengage it from the graphics card.
62 Chapter 4 Removal and replacement procedures
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