The system error LED helps you to determine if there are any system errors.
Status Color Description Action
On
Amber An error has been detected on the server.
Causes might include but are not limited to
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.
• A hot-swap fan has been removed.
• The power supply has a critical error.
• The power supply is not connected to
the power.
• A processor error.
• A system I/O board or processor board
error.
• Abnormal status is detected on the
Processor Neptune
TM
Air Module
(NeptAir) or Processor Neptune
TM
Core
Module (NeptCore).
• Check the Lenovo XClarity Controller
event log and the system event log to
determine the exact cause of the error.
• Check if additional LEDs in the server
are lit. It will direct you to the error
source. See “Troubleshooting by system
LEDs and diagnostics display” on page
301
.
• Save the log if necessary.
Note: For server models with NeptAir
module or NeptCore module installed, it is
required to open the top cover to check the
LED status of the leakage detection sensor
module. For more instructions, see
“LED
on the leakage detection sensor module”
on page 303
.
Off
None The server is off or the server is on and is
working correctly.
None.
4 System ID button with system ID LED
Use this system ID button and the blue system ID LED to visually locate the server. A system ID LED is also
located on the rear of the server. Each time you press the system ID button, the state of both the system ID
LEDs changes. The LEDs 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 LEDs 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.
LED on the leakage detection sensor module
This topic provides information about the LED on the leakage detection sensor module.
The leakage detection sensor module on the Processor Neptune
TM
Air Module (NeptAir) or Processor
Neptune
TM
Core Module (NeptCore) comes with one LED. The following illustration shows the LED on the
module.
Chapter 7. Problem determination 303