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6. Remove the optional rear hard disk drive cage (see "Removing an optional
hot-swap SAS/SATA rear 3.5-inch hard disk drive cage" on page 202 or
"Removing an optional hot-swap SAS/SATA rear 2.5-inch hard disk drive cage"
on page 210).
7. Remove the PCI riser-card assembly with adapters (see "Removing the PCI
riser-card assembly" on page 150) and place it on a static-protective surface
for reinstallation.
8. If a virtual media key is installed in the server, remove it (see "Removing an
IBM virtual media key" on page 167 for instructions).
9. Remove all DIMMs, and place them on a static-protective surface for
reinstallation (see "Removing a memory module (DIMM)" on page 161).
Important: Before you remove the DIMMs, note which DIMMs are in which
connectors. You must install them in the same configuration on the
replacement system board.
10. Disconnect all cables from the system board, note the cable routing and
connectors (see "Internal cable routing and connectors" on page 136).
Important: Pay special attention while you are removing the power cable of
the Power Management Bus (PM Bus) from connector. Make sure that you
press the locking of the power cable first. Then pull the cable out of the
connector vertically so the housing of the connector still remains on the system
board.
Attention:
v In the following step, do not allow the thermal grease to come in contact
with anything, and keep each heat sink paired with its microprocessor for
reinstallation. Contact with any surface can compromise the thermal grease
and the microprocessor socket; a mismatch between the microprocessor
and its original heat sink can require the installation of a new heat sink.
v Disengage all latches, release tabs or locks on cable connectors when you
disconnect all cables from the system board. Please refer to "Internal cable
routing and connectors" on page 136 for more information. Failing to release
them before removing the cables will damage the cable sockets on the
system board. The cable sockets on the system board are fragile. Any
damage to the cable sockets may require replacing the system board.
11. (Trained service technician only) Remove each microprocessor heat sink and
microprocessor; then, place them on a static-protective surface for
reinstallation (see "Removing a microprocessor and heat sink" on page 221).
12. Remove the screws that secure the system board to the chassis.
13. Lift up to remove the system board out of the server.
Chapter 5. Removing and replacing server components
229
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