Heat sink
Table 5-8 Heat sink description and part number
Description Spare part number
Heat sink (includes replacement thermal material) L46576-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 22).
2. Remove the keyboard/top cover (see Keyboard/top cover on page 23).
3. Disconnect the battery cable from the system board (see Battery on page 28).
4. Remove the system board (see System board on page 35).
Remove the heat sink:
1. Turn the system board upside down with the front toward you.
2. Remove the two Phillips M2.0 × 2.0 broadhead screws (1) that secure the heat sink to the system board.
3. Remove the heat sink (2).
NOTE: The thermal material must be thoroughly cleaned from the surfaces of the heat sink and the system
board components each time the heat sink is removed. Replacement thermal material is included with the
heat sink and system board spare part kits.
Thermal paste is used on the processor (1) and the heat sink section (2) that services it.
38 Chapter 5 Removal and replacement procedures for authorized service provider parts
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