Maintenance and Service Guide

Heat sink assembly
NOTE: The heat sink assembly spare part kit includes replacement thermal material.
Table 6-2 Heat sink descriptions and part numbers
Description Spare part number
Heat sink for use in models with discrete graphics memory L62751-001
Heat sink for use in models with UMA graphics memory L62740-001
Before removing the heat sink assembly, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 37).
2. Remove the bottom cover (see Bottom cover on page 37).
3. Disconnect the battery cable from the system board (see Battery on page 49).
Remove the heat sink assembly:
1. Discrete graphics models: Loosen the six captive screws on the heat sink following the sequence
stamped on the heat sink (1), and then remove the heat sink from the system board (2).
IMPORTANT: Take extreme care when removing the heat sink. The heatpipe is very fragile and can be
easily damaged and bent during removal.
Component replacement procedures 51