Removing And Replacing Frus; Removing A Microprocessor And Heat Sink - IBM 8853L6U Service Manual

Removing and replacing FRUs

FRUs must be installed only by trained service technicians.
The illustrations in this document might differ slightly from your hardware.

Removing a microprocessor and heat sink

Read the following important guidelines before removing a microprocessor that is
not faulty (for example, when you are replacing the system board assembly).
If you are not replacing a defective heat sink or microprocessor, the thermal
material on the heat sink and microprocessor will remain effective if you complete
the following steps:
1. Carefully handle the heat sink and microprocessor when removing or installing
2. In a dual-microprocessor blade server, the microprocessor and the heat sink are
Notes:
v The heat-sink FRU is packaged with the thermal material applied to the
v The microprocessor FRU for this system board includes a heat sink.
v A heat-sink FRU can be ordered separately if the thermal material becomes
To remove a microprocessor, complete the following steps.
Microprocessor
heat sink filler
these components. Do not touch the thermal material or otherwise allow it to
become contaminated.
a matched set. First transfer the heat sink and microprocessor from one socket
to the new system board; then, transfer the other heat sink and microprocessor.
(This will ensure that the thermal material remains evenly distributed between
each heat sink and microprocessor.)
underside. This thermal material is not available as a separate FRU. The heat
sink must be replaced when new thermal material is required, such as when a
defective microprocessor is replaced or if the thermal material is contaminated or
has come in contact with another object other than its paired microprocessor.
contaminated.
1. Read the safety information that begins on page vii, and "Installation
guidelines" on page 19.
2. If the blade server is installed in a BladeCenter unit, remove it (see "Removing
the blade server from a BladeCenter unit" on page 21 for instructions).
3. Remove the blade server cover (see "Removing the blade server cover" on
page 24 for instructions).
Heat sink
Microprocessor 2
Microprocessor 1
and heat sink
Chapter 4. Removing and replacing blade server components
45