8. Reconnect any cables that you disconnected during the removal of the old
microprocessor.
9. Rotate the rear adapter-retention bracket to the closed (locked) position.
10. Stand the server back up in its vertical position.
11. Install and lock the side cover (see “Replacing the side cover” on page 182).
12. Reconnect the external cables and power cords; then, turn on the attached
devices and turn on 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 is was
removed from, make sure that the following requirements are met:
v The thermal grease on the heat sink and microprocessor is not contaminated.
v Additional thermal grease is not added to the existing thermal grease on the
heat sink and microprocessor.
Notes:
v Read the safety information in “Safety” on page vii.
v Read the “Installation guidelines” on page 35.
v Read “Handling static-sensitive devices” on page 37.
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.
Heat sink
System board
Figure 226. Heat sink installation for 5U server model with hot-swap power supplies
308 System x3100 M5 Type 5457: Installation and Service Guide
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