Removing the system board

Use this information to remove the system board.

Before you remove the system board from the server, take the following steps to save data, firmware, and configuration data:

• Record all system configuration information, such as IMM IP addresses, vital product data, and the machine type, model number, serial number, Universally Unique Identifier, and asset tag of the server.
• Using the Advanced Settings Utility (ASU), save the system configuration to external media.
• Save the system-event log to external media.

Note

1. 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.
2. Before you replace the system board, make sure that you backup any features on demand (FoD) keys that were enabled. Remember to re-enable the features on demand (FoD) keys after installing the new system board. For more information on Features on Demand (FoD), including instructions for automating the activation and installation of the activation key by using ToolsCenter or Systems Director, see the Lenovo Features on Demand User’s Guide at the Lenovo Features on Demand website under the Help section.

To remove the system board, complete the following steps:

1. Read the safety information that begins in Safety and Installation guidelines.
2. Turn off the server (see Turning off the server) and all attached peripheral devices. Disconnect all power cords; then, disconnect all external cables from the server.
3. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
   Attention

   Do not allow the server to fall over.
4. Unlock and remove the left-side cover (see Removing the left-side cover).
5. Remove the air baffle (see Removing the air baffle).
6. Remove all fan assemblies (see Removing the fan assembly).
7. Remove all PCI riser-card assemblies with the adapters in them (see Removing a PCI-X riser-card assembly and Removing an adapter).
8. 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.
9. Remove the DIMMs from the system board and set them aside on a static-protective surface for reinstallation (see Removing a memory module).
   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.
10. Remove the microprocessor 2 expansion board (see Removing the microprocessor 2 expansion board).
11. Remove the existing microprocessor and heat sink (see Removing a microprocessor and heat sink).
12. Loosen 10 screws from the system board showed as the illustration, and keep they in a safe place for future use.
    
    
13. Grasp the handle of the system board. Then, carefully move the system board backward and lift it up to be removed from the chassis.
    
    
    
14. Reinstall the microprocessor and the heat sink on the new system board (see Installing a microprocessor and heat sink).
15. If you are instructed to return the system board, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.