IBM System x3300 M4 Installation And Service Manual page 439

wrench, tighten the screws to 8.5 Newton-meters (Nm) to 13 Nm (6.3
foot-pounds to 9.6 foot-pounds).
12. If you installed the second microprocessor, install the two fans on Fan
connector 3 of the system board respectively (see "Installing the fan assembly"
on page 105).
13. Reinstall the memory module that you have removed (see "Installing a
memory module" on page 62).
14. Reinstall the air baffle (see "Installing the air baffle" on page 107).
15. Reconnect any cables that you have disconnected from the adapters or system
board.
16. If you are instructed to return the old microprocessor, follow all packaging
instructions, and use any packaging materials for shipping that are supplied
to you.
If you have other devices to install or remove, do so now. Otherwise, go to
"Completing the installation" on page 104.
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:
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.
Note:
v Read the Safety information begins in "Safety" on page vii.
v Read the "Installation guidelines" on page 36.
v Read "Handling static-sensitive devices" on page 39.
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.
Chapter 6. Removing and replacing components
421