IBM System x iDataPlex dx360 M2 Problem Determination And Service Manual page 218

3. Install the expansion enclosure, if you removed one (see "Installing an
4. Install the system-board tray in the chassis (see "Installing the system-board
You must replace the thermal grease whenever the heat sink has been removed
from the top of the microprocessor and is going to be reused on another
microprocessor or when debris is found in the grease.
When you are installing the heat sink on the same microprocessor that you
removed it from, make sure that the thermal grease on the heat sink and
microprocessor is not contaminated. Never add thermal grease to the existing
thermal grease on the heat sink and microprocessor.
Note:
v Read the safety information that begins on page vii.
v Read the "Installation guidelines" on page 123.
v Read "Handling static-sensitive devices" on page 124.
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
4. Use a clean area of the cleaning pad to wipe the thermal grease from the
5. Use the thermal-grease syringe to place 9 uniformly spaced dots of 0.02 mL
202
System x iDataPlex dx360 M2: Problem Determination and Service Guide
should be rotated two full rotations at a time. Repeat until the screws are
tight. Do not overtighten the screws by using excessive force. If you are
using a torque wrench, tighten the screws to 8.5 to 13 Newton-meters (Nm)
(6.3 to 9.6 inch-pounds).
expansion enclosure on a system-board tray" on page 132); otherwise, install
the system-board tray cover (see "Installing the system-board tray cover" on
page 125).
tray in a 2U chassis" on page 127 or "Installing the system-board tray in a 3U
chassis" on page 129).
sink.
Note: Make sure that all of the thermal grease is removed.
microprocessor; then, dispose of the cleaning pad after all of the thermal grease
is removed.
0.02 mL of thermal
Microprocessor
each on the top of the microprocessor. The outermost dots must be within
approximately 5 mm of the edge of the microprocessor, to ensure uniform
distribution of the grease.
grease