Lenovo ThinkSystem SR950 V3 System Configuration Manual page 42

Table 18. System I/O board LEDs
Description
LED
LED on: an error has been
System error LED
1
(yellow) detected on the server.
Causes might include one or
more of the following errors:
• The temperature of the
• The voltage of the server
• A fan has been detected
• The power supply has a
• The power supply is not
System ID LED This LED helps you to visually
2
(blue) locate the server.
XCC heartbeat The XCC heartbeat LED
3
LED (green) helps you identify the XCC
status.
• Blinking (about one flash
• Blinking at other speeds or
• Off: XCC is not working.
ThinkSystem SR950 V3 System Configuration Guide
34
server reached the non-
critical temperature
threshold.
reached the non-critical
voltage threshold.
to be running at low
speed.
critical error.
connected to the power.
per second) : XCC is
working normally.
always on: XCC is at the
initial phase or is working
abnormally.
Action
Check system logs or internal error LEDs to identify the failed
part.
A system ID button with LED is also located on the front of the
server. You can press the system ID button to turn on/off or
blink the front and rear ID LEDs.
If the XCC heartbeat LED is always off or always on, do the
following:
• If XCC cannot be accessed:
1. Re-plug the power cord.
2. Check and ensure that the system I/O board and the
firmware and RoT security module are installed
correctly. (Trained technician only) Reinstall them if
needed.
3. (Trained technician only) Replace the firmware and
RoT security module.
4. (Trained technician only) Replace the system I/O
board.
• If XCC can be accessed, replace the system I/O board.
If the XCC heartbeat LED is always blinking fast over 5
minutes, do the following:
1. Re-plug the power cord.
2. Check and ensure that the system I/O board and the
firmware and RoT security module are installed correctly.
(Trained technician only) Reinstall them if needed.
3. (Trained technician only) Replace the firmware and RoT
security module.
4. (Trained technician only) Replace the system I/O board.