By placing the system-error LED indicator in Remind mode, you acknowledgethat you are aware of the last failure but will not take immediate action tocorrect the problem.v Reset button: Press this button to reset the server and run the power-on self-test(POST). You might have to use a pen or the end of a straightened paper clip topress the button.Light path diagnostics LEDsThe following table describes the LEDs on the light path diagnostics panel andsuggested actions to correct the detected problems. For additional information, see“Server controls, LEDs, and power” on page 14 and the “System-board LEDs” onpage 28 for the location of the system board LEDs.Note: Check the IMM system-event log or system event log for additionalinformation before replacing a FRU.Table 11. Light path diagnostics panel LEDsv Follow the suggested actions in the order in which they are listed in the Action column until the problem issolved.v If a action step is preceded by "(Trained technician only)," that step must be performed only by a trainedtechnician.LED Description ActionNone, but theCheck Log LEDis lit.An error has occurred and cannotbe isolated. The error is notrepresented by a path.1. Check the IMM2 system even log and the system-errorlog for information about the error.2. Save the log if necessary and clear the log afterwards.System ErrorLEDAn error occurred. 1. Check the light path LEDs and follow the listedinstruction.2. Check the IMM2 system even log and the system-errorlog for information about the error.3. Save the log if necessary and clear the log afterwards.OVER SPEC The power supplies are usingmore power than their maximumrating. The system is drawingpower incoherent to powersupply specified ratings.If the OVER SPEC LED is lit, use one of the followingprocedures:1. Turn off the server, disconnect the power from the server.2. Remove the optical drive, fans, hard disk drives, and harddisk drive backplanes.3. Restart the server to see whether the problem remains.4. Reinstall each device that was removed in step 2 one at atime, starting the server each time, to isolate the failingdevice.5. Replace any failing device.6. (Trained technician only) Replace the system board.LINK Reserved.PS A power supply is not detectedor has failed. 1. Check the power-supply in the server that has an lityellow LED (see “Power-supply LEDs” on page 114).2. Make sure that the power supplies are seated correctly.3. Remove one of the power supplies to isolate the failedpower supply.4. Replace the failed power supply.Chapter 4. Troubleshooting 109
