Lenovo ThinkSystem SD550 V3 User Manual page 265

Table 25. System-board LEDs description and actions
•
1
System power LED (yellow)
Off: No power supply is properly installed, or the LED itself has failed.
Flashing rapidly (four times per second): The node is turned off and is not ready to be turned on. The power
button is disabled. This will last approximately 5 to 10 seconds..
Flashing slowly (once per second): The node is turned off and is ready to be turned on. You can press the
power button to turn on the node.
Lit: The node is turned on.
•
2
ME heartbeat LED (green)
Blinking: PCH ME is functioning.
On: PCH ME is malfunctioning.
Off: PCH ME is malfunctioning.
•
3
XCC heartbeat LED
Blinking slowly: XCC is functioning.
Blinking rapidly and constantly: XCC is initializing or malfunctioning.
On: XCC is malfunctioning.
Off: XCC is malfunctioning.
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Chapter 8 Problem determination
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