Lenovo System x3650 M5 Installation And Service Manual page 312

To remove the system board, complete the following steps:
Step 1. Read the safety information that begins on "Safety" on page v, "Handling static-sensitive devices"
on page 307, and "Installation guidelines" on page 305.
Step 2. Turn off the server and any attached devices.
Step 3. Turn off the peripheral devices and disconnect all power cords.
Note: When you replace the system board, you must either update the server with the latest
firmware or restore the pre-existing firmware that the customer provides on a diskette or CD image.
Make sure that you have the latest firmware or a copy of the pre-existing firmware before you
proceed.
Step 4. Pull the power supplies out of the rear of the server, just enough to disengage them from the server.
Step 5. Remove the top cover (see "Removing the top cover" on page 162).
Step 6. Remove all PCI riser-card assemblies and adapters (see "Removing a riser-card assembly" on
page 198 and "Removing an adapter" on page 203).
Step 7. Remove the air baffle (see "Removing the air baffle" on page 165).
Step 8. Remove the fan cage assembly (See "Removing the fan cage assembly" on page 190).
Step 9. Remove any backplate assembly or any backplane (See "Removing the 2.5-inch simple-swap
backplate assembly/hot-swap hard disk drive backplane" on page 258 and "Removing the 3.5-inch
simple-swap backplate assembly/hot-swap hard disk drive backplane" on page 260).
Step 10. Remove the dedicate slotless RAID controller (see "Removing the dedicated slotless RAID
controller" on page 201).
Step 11. Remove the paddle card module (see "Removing the power paddle module" on page 167).
Step 12. Remove the memory modules and set them aside on a static-protective surface for reinstallation
(see "Removing a memory module" on page 183).
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 13. (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
284).
Note: 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 14. 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 147 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 15. 1 Loosen the two thumbscrews (located near the front of the server) that secure the system board
to the server and
Step 16. Grasp both system-board handles and lift up the left side of the system board slightly and carefully
remove it from the chassis, being careful not to damage any surrounding components.
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Lenovo System x3650 M5 Installation and Service Guide
2 slide the system board toward the front of the server.