Technical Product Specification

Intel
®
Light Guided Diagnostics Intel
®
Server Board S2400EP TPS
Intel order number G50763-002 Revision 2.0
108
10.2 System Status LED
The server board includes a bi-color System Status LED. The System Status LED on the server
board is tied directly to the System Status LED on the front panel (if present). This LED
indicates the current health of the server. Possible LED states include solid green, blinking
green, blinking amber, and solid amber.
When the server is powered down (transitions to the DC-off state or S5), the BMC is still on
standby power and retains the sensor and front panel status LED state established before the
power-down event.
When AC power is first applied to the system, the status LED turns solid amber and then
immediately changes to blinking green to indicate that the BMC is booting. If the BMC boot
process completes with no errors, the status LED will change to solid green.
Table 52. System Status LED State Definitions
Color
State
Criticality
Description
Off
System is
not
operating
Not ready
 System is powered off (AC and/or DC).
 System is in EuP Lot6 Off Mode.
 System is in S5 Soft-Off State.
 System is in S4 Hibernate Sleep State.
Green
Solid on
Ok
Indicates that the System is running (in S0 State) and its status is
‘Healthy’. The system is not exhibiting any errors. AC power is
present and BMC has booted and manageability functionality is up
and running.
Green
~1 Hz blink
Degraded -
system is
operating in a
degraded state
although still
functional, or
system is
operating in
a redundant state
but with an
impending failure
warning
System degraded:
 Redundancy loss, such as power-supply or fan. Applies only if the
associated platform sub-system has redundancy capabilities.
 Fan warning or failure when the number of fully operational fans is
more than minimum number needed to cool the system.
 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.
 Power supply predictive failure occurred while redundant power
supply configuration was present.
 Unable to use all of the installed memory (one or more DIMMs
failed/disabled but functional memory remains available)
 Correctable Errors over a threshold and migrating to a spare DIMM
(memory sparing). This indicates that the user no longer has
spared DIMMs indicating a redundancy lost condition.
Corresponding DIMM LED lit.
 Uncorrectable memory error has occurred in memory Mirroring
Mode, causing Loss of Redundancy.
 Correctable memory error threshold has been reached for a failing
DDR3 DIMM when the system is operating in fully redundant RAS
Mirroring Mode.
 Battery failure.
 BMC executing in uBoot. (Indicated by Chassis ID blinking at
Blinking at 3Hz). System in degraded state (no manageability).
BMC uBoot is running but has not transferred control to BMC
Linux*. Server will be in this state 6-8 seconds after BMC reset
while it pulls the Linux* image into flash