Removing And Replacing Frus; Microprocessor - IBM LS20 - BladeCenter - 8850 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.

Microprocessor

Read the following important guidelines before removing a microprocessor that is
not faulty (for example, when replacing the system board assembly).
Attention:
If you are not replacing a defective heat sink or microprocessor, the grease on the
heat sink and microprocessor will remain effective if you perform the following
steps:
1. Carefully handle the heat sink and microprocessor when removing or installing
2. For dual-microprocessor systems, since the microprocessor and the heat sink
The following sections contain the instructions for removing and replacing a
microprocessor.
Notes:
v The heat sink FRU is packaged with the thermal grease applied to the underside.
v If you need to install a new heat sink for any reason, first remove the thermal
v The microprocessor FRU for this system board includes a heat sink.
v A heat sink FRU can be ordered separately if the grease becomes contaminated.
To remove a microprocessor, complete the following steps:
1. Read the safety information that begins on page v, the "Installation guidelines"
2. Shut down the operating system, turn off the blade server, and remove the
3. Carefully lay the blade server on a flat, non-conductive surface.
4. Open the blade server cover (see "Operating the blade server cover" on page
5. Remove the bezel assembly (see "Removing and replacing the bezel assembly"
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AMD Opteron LS20 Type 8850 for IBM BladeCenter: Problem Determination and Service Guide
Do not use a thermal grease syringe with this FRU.
these components. Do not touch the grease or otherwise allow it to become
contaminated.
are 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 grease remains evenly distributed
between each heat sink and microprocessor.)
This thermal grease is not available as a separate FRU. The heat sink must be
replaced when new grease is required, such as when a defective microprocessor
is replaced or if the grease is contaminated.
grease from the microprocessor with an alcohol pad before attaching the new
heat sink.
on page 59 and "Handling static-sensitive devices" on page 60.
blade server from the BladeCenter unit (see "Removing and installing the blade
server in a BladeCenter unit" on page 61).
64 for instructions).
on page 66 for instructions).