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e.
Align and place the heat sink on top of the microprocessor in the retention bracket, thermal
material side down.
f.
Press firmly on the heat sink.
g.
Rotate the heat sink retention module release lever to the closed position and hook it
underneath the lock tab.
Heat sink
Figure 82. Heat sink retention module release lever
Step 11. Reinstall the air baffle (see "Replacing the air baffle" on page 99).
Step 12. Install the left-side cover (see "Replacing the left-side cover" on page 99).
Step 13. Slide the server into the rack.
Step 14. Reconnect the power cords and any cables that you removed.
Step 15. Turn on the peripheral devices and the server.
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. Use this information to
replace damaged or contaminated thermal grease on the microprocessor and heat sink.
When you are installing the heat sink on the same microprocessor that it 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 29.
• Read "Handling static-sensitive devices" on page 31.
92
System x3500 M5 Installation and Service Guide
Heat sink
release lever
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Troubleshooting
