Heat sink
Description Spare part number
Heat sink (includes replacement thermal material) 651898-001
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 34), and then remove the following components:
{
Service cover (see
WLAN module on page 36)
{
Keyboard (see
Keyboard on page 45)
{
Top cover (see
Top cover on page 48)
{
System board (see
System board on page 55)
{
Fan (see
Fan on page 58)
Remove the heat sink:
1. Remove the two Phillips PM2.0×4.6 screws (1) that secure the heat sink to the system board.
60 Chapter 4 Removal and replacement procedures
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