3. Remove the ngerprint reader board from the computer (4).
Reverse this procedure to install the ngerprint reader board.
Heat sink
To remove the heat sink, use these procedures and illustrations.
Table 6-7 Heat sink descriptions and part numbers
Description Spare part number
Heat sink M47406-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (see Preparation for disassembly on page 38).
2. Remove the bottom cover (see Bottom cover on page 38).
3. Disconnect the battery cable from the system board (see Battery on page 48).
Remove the heat sink:
1. In the order indicated on the heat sink, loosen the four captive Phillips screws (1) that secure the heat
sink to the computer.
54 Chapter 6 Removal and replacement procedures for authorized service provider parts
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