IBM 88631SU - System x3850 - 8863 Installation Manual

Also see for 8863 - eServer xSeries 366: Service guide Service guide Installation guide Problem determination and service guide

Contents

v Follow the suggested actions in the order in which they are listed in the Action column until the problemis solved.v See the parts listing in the Problem Determination and Service Guide to determine which components arecustomer replaceable 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.Lit light pathdiagnostics LED withthe system-error LEDalso lit Description ActionVRM A VRM has failed or is missing. 1. Check the BMC log or the system-error log todetermine the reason for the lit LED (for a VRM).2. Find the failing or missing VRM by checking theLEDs on the microprocessor tray.3. Install any missing VRMs.4. Reseat the following components:a. Failing VRMb. (Trained service technician only)Microprocessor associated with the VRMc. Microprocessor tray5. Replace the following components one at a time,in the order shown, restarting the server each time.a. Failing VRMb. (Trained service technician only)Microprocessor associated with the VRMc. (Trained service technician only)Microprocessor trayLOG Information is present in the BMClog and system-error log. One orboth logs may be full or close to full.1. The system-error log is 75% full; save the log ifnecessary and clear it.2. Check the log for possible errors.MEM Memory failure.Note: The error LED on thememory card is also lit.1. Remove the memory card with the lit error LED onthe top of the card; then, press the light pathbutton on the memory card to identify the failedcard or DIMM.2. Reseat the DIMM.3. Replace the following components one at a time,in the order shown, restarting the server each time.a. Memory boardb. DIMMc. (Trained service technician only)Microprocessor trayNMI A hardware error has been reportedto the operating system.Note: The PCI or MEM LED mightalso be lit.1. See the BMC log and the system-error log.2. If the PCI LED is lit, follow the instructions for thatLED.3. If the MEM LED is lit, follow the instructions forthat LED.4. Restart the server.Chapter 6. Solving problems 61