IBM x3690 X5 Service Manual

Also see for System x3690 X5: Implementation guide Installation and user guide At-a-glance reference guide At-a-glance guide Manual

Table 6. Light path diagnostics panel LEDs (continued)v Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v See Chapter 3, "Parts listing", in the Problem Determination and Service Guide to determine which componentsare customer replaceable units (CRU) and which components are field replaceable units (FRU).v If a action step is preceded by "(Trained service technician only)," that step must be performed only by atrained service technician.LED Description ActionPCI An error has occurred on a PCIbus or on the system board. Anadditional LED is lit on one ofthe riser cards.1. Check the system-event log for information about theerror.2. Check the LEDs on the PCI riser cards to identify thecomponent that caused the error.3. If you cannot isolate the failing adapter by using theLEDs and the information in the system-event log,remove one adapter at a time from the failing PCI bus;and restart the server after each adapter is removed.4. Replace the following components, in the order shown,restarting the server each time:v PCI riser cardv (Trained service technician only) Replace the systemboard.SP A service processor error hasbeen detected. 1. Remove power from the server; then, reconnect the serverto power and restart the server.2. Update the IMM firmware (see “Updating the firmware”on page 397).3. (Trained service technician only) Replace the systemboard, if the problem remains.FAN A fan has failed, is operating tooslowly, or has been removed. TheTEMP LED might also be lit.1. Check the LEDs on the server and the front of the MAX5(if installed).2. Reseat the failing fan, which is indicated by a lit LED onthe fan.3. Replace the failing fan.TEMP The system temperature hasexceeded a threshold level. Afailing fan can cause the TEMPLED to be lit.1. Make sure that the air vents are not blocked.2. Determine whether a fan has failed. If it has, replace it.3. Make sure that the heat sink is seated correctly.4. Make sure that the room temperature is not too high. See“Server features and specifications” on page 8 and“System reliability guidelines” on page 262 for the servertemperature information.MEM Memory failure. Check the event logs, see “Event logs” on page 35 forapplicable memory events; then, follow the steps as indicatedin the POST error codes (see “POST error codes” on page 38)or IMM error messages (see “Integrated management module(IMM) error messages” on page 168).NMI A nonmaskable interrupt hasoccurred.Check the system-event log for information about the error.Chapter 3. Diagnostics 71