Technical Product Specification

Table Of Contents
Intel
®
Server Board S5400SF TPS Connector/Header Locations and Pin-outs
Revision 2.02
Intel order number: D92944-007
123
6.5.6 System Status LED
Note: The system status LED state shows the state for the current, most severe fault. For
example, if there was a critical fault due to one source and a non-critical fault due to another
source, the system status LED state would be solid on (the state for the critical fault).
The system status LED is a bicolor LED. Green (status) is used to show a normal operation
state or a degraded operation. Amber (fault) shows the system hardware state and overrides
the green status.
The Integrated BMC-detected state and the state from other controllers, such as the
SCSI/SATA hot-swap controller state, is included in the LED state. For fault states that are
monitored by the Integrated BMC sensors, the contribution to the LED state follows the
associated sensor state, with the priority going to the most critical state that is currently asserted.
When the server is powered down (transitions to the DC-off state or S5), the Integrated BMC is
still on standby power and retains the sensor and front panel status LED state established prior
to the power-down event.
The following table maps the system state to the LED state:
Table 65. System Status LED Indicator States
Color State System Status Description
Green Solid on Ok System ready
Green ~1 Hz blink Degraded System degraded:
BIOS detected
1. Unable to use all of the installed memory (more than one DIMM
installed).
1
2. Correctable errors over a threshold of ten and migrating to a
spare DIMM (memory sparing). This indicates that the user no
longer has spare DIMMs indicating a redundancy lost condition.
The corresponding DIMM LED should light up.
1
3. In a mirrored configuration, when memory mirroring takes place
and system loses memory redundancy. This is not covered by
(2).
1
4. PCI Express* correctable link errors.
Integrated BMC detected
1. Redundancy loss such as power supply or fan. Applies only if the
associated platform subsystem has redundancy capabilities.
2. CPU disabled – if there are two CPUs and one CPU is disabled
3. Fan alarm – Fan failure. Number of operational fans should be
more than the minimum number needed to cool the system.
4. Non-critical threshold crossed – Temperature, voltage, power
nozzle, power gauge, and PROCHOT
2
(Therm Ctrl) sensors.
5. Battery failure
6. Predictive failure when the system has redundant power supplies