v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See Chapter 3, “Parts listing, Type 8863,” on page 93 to determine which components are customerreplaceable units (CRU) and which components are field replaceable units (FRU).v If an action step is preceded by “(Trained service technician only)”, that step must be performed only by atrained service technician.System-error log message ActionSystem Boot Failed 1. Check the POST/BIOS boot checkpoint indicator and see theapplicable documentation.2. Make sure that the memory card and DIMMs are correctlyconnected and seated and that they are functional.3. Attempt to start the server from the backup BIOS page.System Complex Powered Down Information onlySystem Complex Powered Up Information onlySystem-error log full Clear the event log.System log 75% full Information onlySystem Memory Error 1. Reseat the memory adapter and DIMMs.2. Replace the memory.System Running Nonredundant Power 1. Install another power supply (if possible) and make sure thatthe ac power cords are correctly connected.2. Remove devices that consume an extraordinary amount ofpower.3. Replace the power backplane.User attempting to power/resetserverInformation onlyVideo 1.8V Power Good Fault 1. Reseat the I/O board.2. Replace the I/O board.Video 2.5V Power Good Fault 1. Reseat the Remote Supervisor Adapter II SlimLine, if present.2. Reseat the I/O board.3. Replace the I/O board.Video Core 1.8V Power Good Fault 1. Reseat the I/O board.2. Replace the I/O board.VRM X Power Good Fault 1. Reseat VRM 3 or 4.2. Reseat the microprocessor tray.3. Replace VRM 3 or 4.4. (Trained service technician only) Replace the microprocessortray.Vtt Power Good Fault 1. Reseat the microprocessor tray.2. (Trained service technician only) Reseat the microprocessors.3. Reseat the microprocessor VRMs, if present.4. (Trained service technician only) Replace the microprocessortray.88 IBM xSeries 366 Type 8863: Problem Determination and Service Guide