8. Lift the left side of the system board (1) until it rests at an angle.
9. Slide the system board (2) up and to the left at an angle to remove it.
To install the system board, reverse the removal procedure.
Heat sink
To remove the heat sink, use these procedures and illustrations.
Table 5-16
Heat sink descriptions and part numbers
Description Spare part number
Heat sink (includes captive screws and replacement thermal material)
For use with system boards equipped with a 28 W processor N13073-001
For use with system boards equipped with a 15 W processor N13072-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 39).
2. Remove the bottom cover (see Bottom cover on page 39).
3. Remove the battery (see Battery on page 41).
4. Remove the fan (see Fan on page 54).
5. Remove the system board (see System board on page 75).
Remove the heat sink:
1. In the order indicated on the heat sink, loosen the four Phillips captive screws (1) that secure the heat sink
to the system board.
78
Chapter 5Removal and replacement procedures for authorized service provider parts
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