Intel® Server System M20NTP1UR - System Integration and Service Guide
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5.1
System Status LED State Identification
The system status LED is a bi-color (green/amber) indicator that shows the current health of the server
system. The system status LED states are driven by the server board platform management subsystem.
When the server is powered down (transitions to the DC-Off state or S5), standby power allows the BMC to
retain the sensor and front panel status LED state established before the power-down event. The following
table provides a description of each supported LED state.
Table 4. System Status LED State Definitions
Status LED State
System State
Status Description
OFF
Powered off. No Stand-by power System has no AC power
Solid Green
System is operating normally
System is running (in S0/S5 State) and its status is
healthy. The system is not exhibiting any errors.
Source power is present, BMC has booted, and
manageability functionality is up and running.
Blinking Green
•
System is operating in a
degraded state, but still
functional
•
System is operating in a
redundant state but with an
impending failure warning
•
Non-critical threshold crossed – Temperature
(including HSBP temp), voltage, input power
to power supply, output current for main
power rail from power supply and Processor
Thermal Control (Therm Ctrl) sensors.
•
Battery failure
•
BMC Watchdog has reset the BMC
Blinking Amber
System is operating in a
degraded state with an
impending failure warning,
although still functioning.
System is likely to fail.
•
Critical threshold crossed – Voltage,
temperature (including HSBP temp), input
power to power supply, output current for
main power rail from power supply and
PROCHOT (Therm Ctrl) sensors.
•
VRD Hot asserted
Solid Amber
Critical/non-recoverable –
system is halted. Fatal alarm –
system has failed or shut down.
•
Processor CATERR signal asserted.
•
Processor Thermal Trip.
•
DIMM Thermal Trip or equivalent
•
SSB Thermal Trip or equivalent.
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