System-board-assembly LEDsThe following illustration shows the light-emitting diodes (LEDs) on the system board assembly that containsthe system I/O board and processor board.Figure 529. System-board-assembly LEDsTable 28. System-board-assembly LEDsLED Description Action1 System error LED(yellow)LED on: An error has occurred. Check system logs or internal error LEDs to identify thefailed part. For more information, see System error LED.2 System ID LED(blue)This LED helps you visually locatethe server.A system ID button with LED is also located on the frontof the server. You can press the system ID button to turnon/off or blink the front and rear ID LEDs.Chapter 8. Problem determination 493