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Figure 185. Tighten the captive screws
7. If you installed the second microprocessor, install the two fans on Fan connector 4 and Fan connector 6
of the system board respectively (see "Replacing a fan" on page 213).
8. Reinstall the memory module that you have removed (see "Replacing a memory module" on page 215).
9. Reinstall the air baffle (see "Replacing the air baffle" on page 192).
10. Reconnect any cables that you have disconnected from the adapters or system board.
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:
• The thermal grease on the heat sink and microprocessor is not contaminated.
• Additional thermal grease is not added to the existing thermal grease on the heat sink and microprocessor.
Notes:
• Read the Safety information in "Safety" on page v.
• Read the "Installation guidelines" on page 31.
• Read "Handling static-sensitive devices" on page 33.
To replace damaged or contaminated thermal grease on the microprocessor and heat sink, complete the
following steps:
Step 1.
Place the heat sink on a clean work surface.
Step 2.
Remove the cleaning pad from its package and unfold it completely.
Step 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.
Step 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
Removing and replacing structural parts
269
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Table of Contents
Troubleshooting
