Skip to main content

Front operator panel LEDs

The front operator panel of the server provides controls, connectors, and LEDs.

Diagnostics panel with an LCD display is available for some models. For details, see Integrated diagnostics panel and External Diagnostics Handset.
Figure 1. Front operator panel LEDs
Front operator panel LEDs

1 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:

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

2 Network activity LED (green)

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

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

3 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.

If the XClarity Controller USB connector is set to have both the USB 2.0 function and XClarity Controller management function, you can press the system ID button for three seconds to switch between the two functions.

4 System Error LED (yellow)

The system error LED provides basic diagnostic functions for your server. If the system error LED is lit, one or more LEDs elsewhere in the server might also be lit to direct you to the source of the error.

OnYellowAn error has been detected on the server. Causes might include but are not limited to the following errors:
  • A fan failure

  • A memory error

  • A storage failure

  • A PCIe device failure

  • A power supply failure

  • A processor error

  • A system I/O board or processor board error

  • Check the Lenovo XClarity Controller event log and the system event log to determine the exact cause of the error.

  • Check if additional LEDs elsewhere in the server are also lit that will direct you to the source of the error. See Troubleshooting by system LEDs and diagnostics display.

  • Save the log if necessary.

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