CPU VRMS_ERRMEMORYDASD/RAIDNMISERVICEPROCESSORBUSFANPOWERSUPPLYPCIBUS21CONFIGTEMPREMIND3. Once you know the general type of error and the general location of thecomponent involved, the next step is to check the system service label on theoutside of the server.This label gives an overview of internal components that correspond to many ofthe LEDs on the light path diagnostics panel and can help to view lit LEDsinside the server.Note: Some of the LEDs on the light path diagnostics panel will not have acorresponding LED lit on the system board. For example:v LEDs for the power supplies, fans, and hard disk drives are located onor near the individual component.v Some error conditions are corrected by taking an action not related toone particular component; see step 5.4. If the lit LED on the light path diagnostics panel refers to a specific internalcomponent as indicated in step 3, look on the system board for lit error LEDs(see “System-board LEDs” on page 83). For example, a microprocessor errorwill light the LED next to the failing microprocessor.The error LEDs on the system board will only be lit when there is power to theserver. To view them, read “Working inside the server with the power on” onpage 12; then, remove the cover and look for any lit error LEDs.If the lit LED on the light path diagnostics panel does not refer to a specificinternal component, continue with step 5.5. Go to the table at “Light path diagnostic errors” on page 114 and find the entryfor the associated lit LED; then, replace the indicated component or take theindicated action.Notes:v The system-error log and the BMC log might contain additional information that will behelpful before replacing a component.v If an LED on the light path diagnostics panel is lit and the system-error LED is not lit, thereis probably an LED problem. Run LED diagnostics.94 xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide
