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Table 47. Light path diagnostics: LED status and actions
LED
Power button/LED
1
(green)
Network activity LED
2
(green)
Identification button/
3
LED (blue)
System error LED
4
(yellow)
Power supply LEDs
This topic provides information about vatious power supply LED status and corresponding action
suggestions.
The following minimum configuration is required for the ac power LED on the power supply to be lit:
• Power supply
• Power cord
• Appropriate input power from the power source
The following minimum configuration is required for the server to start:
• 16 GB DIMM
Description
Off: No power supply is properly
installed, or the LED itself has failed.
Flashing rapidly (4 times per second):
The server is turned off and is not ready
to be turned on. The power-control
button is disabled. This will last
approximately 5 to 10 seconds.
Flashing slowly (once per second):
The server is turned off and is ready to
be turned on. You can press the power-
control button to turn on the server.
Lit: The server is turned on.
LED on: The server is transmitting to or
receiving signals from the Ethernet LAN.
This LED is used as a presence detection
LED. You can use Lenovo XClarity
Controller to light this LED remotely.
LED on: An error has occurred.
Action
Press the power button to turn the server
on and off manually.
Use this LED to identify network
connection status.
Use this LED to locate the server among
other servers visually.
1. Look for other error LEDs lit in the
system (fans, DIMMs, power supplies,
etc).
2. Check the identification LED and
check log LED and follow the
instructions.
3. Check the Lenovo XClarity Controller
event log and the system-error log for
information about the error.
4. Save the log if necessary and clear the
log afterward.
.
Chapter 4
Problem determination
151
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