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Detach the infrared board from the system board. The infrared board is attached to the system
board with double-sided adhesive.
To replace the infrared board, reverse the removal procedures.
Heat sink
To remove the heat sink, use these procedures and illustrations.
Table 5-13
Heat sink description and part number
Description Spare part number
Heat sink (includes replacement thermal material) N91003-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 31).
2. Remove the bottom cover (see Bottom cover on page 31).
3. Remove the battery (see Battery on page 33).
4. Remove the fan (see Fan on page 42).
5. Remove the system board (see System board on page 52).
Remove the heat sink:
1. In the order indicated on the heat sink, remove the four Phillips M2.0 × 3.9 screws (1) that secure the
heat sink to the system board.
Heat sink
57
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