7.
Lift the failing heat sink and fan assembly off the system board.
Notes:
a.
You might have to gently twist the heat sink and fan assembly to free it
from the microprocessor.
b.
When handling the heat sink and fan assembly, do not touch the thermal
grease on the bottom of the heat sink and fan assembly.
8.
Position the new heat sink and fan assembly on the system board so that the
four screws are aligned with the corresponding holes in the system board.
Make sure that the heat sink and fan assembly cable can be easily connected
to the microprocessor fan connector on the system board.
9.
Follow this sequence to install the four screws to secure the heat sink and fan
assembly, as shown in Figure 23.
a.
Partially tighten screw
1
, then fully tighten screw
2
, and then fully
tighten screw
1
.
b.
Partially tighten screw
3
, then fully tighten screw
4
, and then fully
tighten screw
3
.
10.
Connect the heat sink and fan assembly cable to the microprocessor fan
connector on the system board. See “System-board internal connectors” on
page 26.
11.
Go to “Completing the parts replacement” on page 61.
Replacing the microprocessor
Attention
Do not open your server or attempt any repair before reading and
understanding the Chapter 1, “About this manual,” on page 1 and the
Safety
Information
book. To obtain a copy of the
Safety Information
book, go to:
http://www.lenovo.com/support
Figure 23. Removing the heat sink and fan assembly
48
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