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:1. When you replace the system board, you must either update the server withthe latest firmware or restore the pre-existing firmware that the customerprovides on a diskette or CD image. Make sure that you have the latestfirmware or a copy of the pre-existing firmware before you proceed.2. Before you attach a MAX5 to the server and try to use it, you must update theserver firmware with the latest level of firmware or code. If you attach and tryto use the MAX5 without updating the server firmware, you might getunexpected system behavior or the server might not power on. For specialinstructions to follow before you attach the MAX5 to the server, go tohttp://www.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5085756.To remove the system board, complete the following steps:1. Read the safety information and installation guidelines, see “Safety” on pagevii and “Installation guidelines” on page 261.2. Turn off the server (see “Turning off the server” on page 17) and all attachedperipheral devices. Disconnect all power cords; then, disconnect all externalcables as necessary to replace the device.3. If the server is in a rack, slide the server out of the rack.4. Remove the server cover (see “Removing the server top cover” on page 264).5. Disconnect all cables from the system board. Make a list of each cable as youdisconnect it; you can then use this as a checklist when you install the newsystem board.6. Disconnect all remote RAID battery cables from the adapters, if any areinstalled.7. Remove the fan cage assembly (see “Removing the fan cage assembly” onpage 3318. Remove the DIMM air baffle, if one is installed (see “Removing the DIMM airbaffle” on page 270).9. Remove the memory tray, if one is installed (see “Removing the memory tray”on page 266).10. Remove the DIMMs from the system board and set them aside on astatic-protective surface for reinstallation (see “Removing a memory module”on page 295).Note: Make a note of the location of each DIMM as you remove it, so thatyou can later reinstall it in the same connector.11. Remove all PCI riser-card assemblies with the adapters in them (see“Removing a PCI riser-card assembly” on page 336).12. Remove the microprocessor air baffle (see “Removing the microprocessor airbaffle” on page 268).360 System x3690 X5 Types 7147, 7148, 7149, and 7192: Problem Determination and Service Guide