IBM 7870B4U, Service Manual

Page: 104 / 268

11. Carefully reposition the expansion-unit riser assembly, aligning it with the
expansion-unit system-board-assembly rails.
12.
Firmly slide the assemblies together until the tray-release button securely
locks the panels.
13. Connect the auxiliary power cable (A), as shown in the following illustration.
A
B
14.
Connect the cable to the expansion-unit system board. Replace the retention
bracket and tighten the screws (B), as shown in the illustration above.
15. Install the cover that comes with the expansion unit (see “Closing the blade
server cover” on page 56).
16.
Install the expansion unit (see “Installing an optional expansion unit” on page
85).
17. Install the blade server into the BladeCenter unit (see “Installing the blade
server in a BladeCenter unit” on page 53).
Removing a microprocessor and heat sink
Use this information to remove a microprocessor and heat sink from the blade
server.
Read the following important guidelines before you remove 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 carefully
handle the heat sink and microprocessor when you remove or install these
components. Do not touch the thermal material or otherwise allow it to become
contaminated.
Notes:
1.
The microprocessor and heat sink assembly are both field-replaceable units
(FRUs) and must be replaced by a trained service technician. To contact an IBM
service representative, see “Hardware service and support” on page 236.
2. The heat-sink FRU is packaged with the thermal material applied to the
underside. This thermal material is not available as a separate FRU. You must
replace the heat sink when new thermal material is required, such as when a
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BladeCenter HS22 Type 7870, 1936, and 1911: Problem Determination and Service Guide