Maintenance & Service Guide

Heat sink
NOTE: All heat sink spare part kits include replacement thermal material.
Table 5-10 Heat sink description and part number
Description Spare part number
Heat sink for use in models with NVIDIA GeForce MX250 graphics L57506-001
Heat sink for use in models with NVIDIA GeForce MX130 graphics L45099-001
Heat sink for use in models with UMA graphics L45098-001
Before removing the heat sink, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 33).
2. Place the computer in Battery Safe mode (Battery Safe mode on page 33).
3. Remove the bottom cover (Bottom cover on page 34).
4. Remove the battery (Battery on page 36).
Remove the heat sink:
1. To remove the heat sink on models with discrete graphics memory:
a. In the order indicated on the heat sink, loosen the six captive Phillips screws (1) that secure the
heat sink to the system board.
b. Lift the heat sink from the system board (2), and then pull the heat sink away from the side of the
chassis to remove it (3).
48 Chapter 5 Removal and replacement procedures for authorized service provider parts