The following illustration shows the light-emitting diodes (LEDs) on the system board.
|Standby power LED||When this LED is lit, it indicates that the server is connected to ac power.|
|DIMM error LEDs||A memory DIMM has failed or is incorrectly installed.|
|Microprocessor error LED||Microprocessor has failed, is missing, or has been incorrectly installed.|
|System-board error LED||System-board CPU VRD and/or power voltage regulators have failed.|
|IMM2 heartbeat LED|
Indicates the status of the boot process of the IMM2.
When the server is connected to power this LED flashes quickly to indicate that the IMM2 code is loading. When the loading is complete, the LED stops flashing briefly and then flashes slowly to indicate that the IMM2 if fully operational and you can press the power-control button to start the server.
|RTMM heartbeat LED||power-on and power-off sequencing.|