Tray handle Microprocessorand memoryexpansion trayPower supply 23. Reinstall the DIMMs and heat sinks (see “Replacing a memory module” onpage 224 and “Replacing a microprocessor and heat sink” on page 274).4. Reinstall the microprocessor air baffles, if you removed them earlier.5. Rotate the tray handle down until the tray is seated firmly and the handle islocked in place.6. Slide power supply 2 back into the server.7. Reinstall the cover (see “Replacing the server top cover” on page 207).8. Slide the server into the rack.9. Reconnect the power cords and any cables that you removed.10. Turn on the peripheral devices and the server.Removing the system boardBefore you remove the system board from the server, take the following steps tosave data, firmware, and configuration data:v Record all system configuration information, such as IMM IP addresses, vitalproduct data, and the machine type, model number, serial number, UniversallyUnique Identifier, and asset tag of the server.v Using the Advanced Settings Utility (ASU), save the system configuration toexternal media.v Save the system-event log to external media.Note: When you replace the system board, you must either update the server withthe latest firmware or restore the pre-existing firmware that the customer provideson a CD or DVD image. Make sure that you have the latest firmware or a copy ofthe pre-existing firmware before you proceed.To remove the system board, complete the following steps:280 System x3750 M4 Types 8722 and 8733: Installation and Service Guide
