Intel® Light Guided Diagnostics  Intel® Server Board S2600CW Family TPS 
120    Revision 2.4 
9.4.2  System Status LED 
The bi-color (green/amber) System Status LED operates as follows. 
Table 38. System Status LED 
Indicates that the System 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. 
1.  Redundancy loss such as power-supply or fan. Applies only if the 
associated platform sub-system has redundancy capabilities. 
2.  Fan warning or failure when the number of fully operational fans 
is less than minimum number needed to cool the system. 
3.  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. 
4.  Power supply predictive failure occurred while redundant power 
supply configuration was present. 
5.  Unable to use all of the installed memory (more than 1 DIMM 
installed). 
6.  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. 
7.  In mirrored configuration, when memory mirroring takes place 
and system loses memory redundancy. 
8.  Battery failure. 
9.  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. 
10. BMC booting Linux*. (Indicated by Chassis ID solid ON). System 
in degraded state (no manageability). Control has been passed 
from BMC uBoot to BMC Linux* itself. It will be in this state for 
~10-~20 seconds. 
11. BMC Watchdog has reset the BMC. 
12. Power Unit sensor offset for configuration error is asserted. 
13. HDD HSC is off-line or degraded. 
Non-fatal alarm – system is likely to fail: 
1.  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. 
2.  VRD Hot asserted. 
3.  Minimum number of fans to cool the system not present or 
failed.