4Troubleshooting Your SystemSafety First—For You And Your SystemCAUTION: Many repairs may only be done by a certified service technician. You should onlyperform troubleshooting and simple repairs as authorized in your product documentation, or asdirected by the online or telephone service and support team. Damage due to servicing that isnot authorized by Dell is not covered by your warranty. Read and follow the safety instructionsthat came with the product.Power LED DiagnosticsThe power button LED located on the front of the chassis also functions as a bicolored diagnostic LED.The diagnostic LED is only active and visible during the Power On Self Test (POST) process. Once theoperating system starts to load, it is no longer visible.Amber LED blinking scheme – The pattern is 2 or 3 blinks followed by a short pause then x number ofblinks up to 7. The repeated pattern has a long pause inserted in the middle. For example, 2, 3 = 2 amberblinks, short pause, 3 amber blinks followed by long pause then repeats.Table 13. Power LED DiagnosticsAmber LED State White LED State Descriptionoff off system is offoff blinking system is in sleep stateblinking off power supply unit (PSU) failuresteady off PSU is working but failed to fetch codeoff steady system is onAmber LEDStateDescription2,1 system board failure2,2 system board, PSU, or PSU cabling failure2,3 system board, memory, or processor failure2,4 coin-cell battery failure2,5 corrupt BIOS2,6 processor configuration failure or processor failure62
