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Front LEDs

This topic provides information about LEDs on the front of the server.

Figure 1. Front LEDs
Front LEDs
Use this green LED to distinguish the network connectivity status:
  • Off: The network link is disconnected.
  • Green: The network link is established.

2 XCC system management port (10/100/1000 Mbps RJ-45) activity LED​

Use this green LED to distinguish the network activity status:
  • Off: The server is disconnected from a LAN.
  • Green: The network is connected and active.

3 Location LED (blue)​

This LED is used as a presence detection LED. You can use Lenovo XClarity Controller to light this LED remotely. Use this LED to locate the server among other servers visually.

4 System error LED (yellow)​

LED on: an error has occurred. Complete the following steps:
  1. Check the identification LED and check log LED and follow the instructions.
  2. Check the Lenovo XClarity Controller event log and the system error log for information about the error.
  3. Save the log if necessary, and clear the log afterwards.

5 RoT error LED (amber)​

The RoT error LED indicates that there is a Root of Trust failure on either the XCC or UEFI image.

6 Power button with power status LED (green)​

You can press the power button to power on the server when you finish setting up the server. You also can hold the power button for several seconds to power off the server if you cannot shut down the server from the operating system. The states of the power LED are as follows:

StatusColorDescription
OffNoneNo power supply is properly installed, or the LED itself has failed.
Flashing rapidly (four times per second)Green

The server is turned off and is not ready to be turned on. The power button is disabled. This will last approximately 5 to 10 seconds.

There may be a power fault or incorrect system cabling. If the LED continues flashing slowly (approximately every 10 seconds), check the XCC event log for more details.

Flashing slowly (once per second)GreenThe server is turned off and is ready to be turned on. You can press the power button to turn on the server.
LitGreenThe server is turned on.

7 Network activity LED (green)​

The network activity LED helps you identify the network connectivity and activity.

StatusColorDescription
OnGreenThe server is connected to a network.
BlinkingGreenThe network is connected and active.
OffNoneThe server is disconnected from the network.

8 System ID button with system ID LED (blue)​

Use this system ID button and the blue system ID LED to visually locate the server. Each time you press the system ID button, the state of the system ID LED changes. The LED can be changed to on, blinking, or off. You can also use the Lenovo XClarity Controller or a remote management program to change the state of the system ID LED to assist in visually locating the server among other servers.

9 System Error LED (yellow)​

The system error LED helps you to determine if there are any system errors.

StatusColorDescriptionAction
OnYellow
An error has been detected on the server. Causes might include one or more of the following errors:

  • The temperature of the server reached the non-critical temperature threshold.

  • The voltage of the server reached the non-critical voltage threshold.

  • A fan has been detected to be running at low speed.

  • The power supply has a critical error.

  • The power supply is not connected to the power.

Check the LCD display or the event log to determine the exact cause of the error.

OffNoneThe server is off or the server is on and is working correctly.None.

For more information about the integrated diagnostics panel, see Integrated diagnostics panel.

10 M.2 drive activity LED (green)​

The drive activity LED indicates the following status:
  • The LED is on: the drive is idle.
  • The LED is off: the drive appears de-asserted.
  • The LED is blinking (about four times per second): the I/O activity of the drive is in progress.

11 M.2 drive status LED (yellow)​

The drive status LED indicates the following status:
  • The LED is on: a drive fault occurs.
  • The LED is off: the drive is working normally.
  • The LED is flashing slowly (once per second): the drive is being rebuilt.
  • The LED is flashing rapidly (about four times per second): the drive is being located.

12 OSFP port 1 bi-color LED (green/yellow)​

Use the bi-color LED to distinguish the link status of the OSFP port 1.
StatusColorDescription
OffN/AA physical link is not detected
BlinkingGreenThe network link is connected and active.
OnGreenThe network link is connected with no active traffic.
Blinking (1 HZ)YellowThe beacon command is used to locate the OSFP card.
Blinking (4 HZ)YellowAn error has occurred to the link. The error can be from I2C or overcurrent.
OnYellowA physical network link is detected.
Note
Using command to light up locating LED is available when transceiver or cable is attached to the OSFP port.

13 2.5-inch drive status LED (yellow)​

The drive status LED indicates the following status:
  • The LED is lit: the drive has failed.
  • The LED is flashing slowly (once per second): the drive is being rebuilt.
  • The LED is flashing rapidly (three times per second): the drive is being identified.

14 2.5-inch drive activity LED (green)​

Each hot-swap drive comes with an activity LED. When this LED is flashing, it indicates that the drive is in use.