Lenovo RS210 manual Thermal grease

6.Go to “Completing the FRU replacement” on page 173.

Thermal grease

The thermal grease must be replaced whenever the heat sink has been removed from the top of the microprocessor and is going to be reused or when debris is found in the grease.

When you are installing the heat sink on the same microprocessor that is was removed from, make sure that the following requirements are met:

vThe thermal grease on the heat sink and microprocessor is not contaminated.

vAdditional thermal grease is not added to the existing thermal grease on the heat sink and microprocessor.

Note:

1.Read the safety information at “Important Safety Information” on page 1.

2.Read “Guidelines for trained service technicians” on page 115.

3.Read “Handling static-sensitive devices” on page 117.

To replace damaged or contaminated thermal grease on the microprocessor and heat sink, complete the following steps:

1.Place the heat sink on a clean work surface.

2.Remove the cleaning pad from its package and unfold it completely.

3.Use the cleaning pad to wipe the thermal grease from the bottom of the heat sink. Note: Make sure that all of the thermal grease is removed.

4.Use a clean area of the cleaning pad to wipe the thermal grease from the microprocessor; then, dispose of the cleaning pad after all of the thermal grease is removed.

Chapter 6. Replacing FRUs 143