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
5-12 Heat sink descriptions and part numbers
Description Spare part number
Heat sink for use in models with discrete graphics memory M21717-001
Heat sink for use in models with UMA graphics memory M21716-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 30).
2. Remove the bottom cover (Bottom cover on page 30).
3. Disconnect the battery cable from the system board (see Battery on page 31).
Remove the heat sink:
1. Discrete graphics models: In the order indicated on the heat sink, loosen the six captive Phillips screws
(1) that secure the heat sink to the computer.
Component replacement procedures 43