Lenovo System x3550 M4 Installation And Service Manual page 315

Step 7. Remove all PCI riser-card assemblies and adapters (see "Removing a PCI riser-card assembly" on
page 220 and "Removing an adapter" on page 225).
Step 8. Remove the ServeRAID SAS/SATA controller (see "Removing a ServeRAID SAS/SATA controller"
on page 230).
Step 9. Remove the dual-port network adapter (see "Removing the dual-port network adapter" on page
238).
Step 10. Remove the memory modules and set them aside on a static-protective surface for reinstallation
(see "Removing a memory module" on page 213).
Note: Make a note of the location of each DIMM as you remove it, so that you can later reinstall it
in the same connector.
Step 11. (Trained technician only) Remove all heat sinks and microprocessors, and set them aside on
a static-protective surface for reinstallation (see "Removing a microprocessor and heat sink" on
page 285).
Notes:
1. Remove the socket covers from the microprocessor sockets on the new system board and
place them on the microprocessor sockets of the system board you are removing.
2. 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.
Step 12. Remove the system battery (see "Removing the system battery" on page 269).
Step 13. Disconnect all cables from the system board. Make a list of each cable as you disconnect it; you
can then use this as a checklist when you install the new system board (see "Internal cable routing
and connectors" on page 179 for more information).
Attention: Disengage all latches, release tabs or locks on cable connectors when you disconnect
all cables from the system board. 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.
Step 14. Remove the hot-swap fans (see "Removing a hot-swap fan" on page 243).
Step 15. Rotate the fan assembly bracket up toward the front of the server.
Figure 236. Fan assembly bracket rotation
.
Chapter 6 Removing and replacing components
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