Intel S5500WB12V Product Specification - Page 71

Power LED, System Status LED

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Intel® Server Board S5500WB TPS Connector/Header Locations and Pin-out 7.3.5 Power LED The green power LED is active when the system DC power is on. The power LED is controlled by the BIOS. The power LED reflects a combination of the state of system (DC) power and the system ACPI state. The following table identifies the different states that the power LED can assume. Table 34. Power LED Indicator States State Power off Power on S5 S1 Sleep S0 ACPI No No Yes Yes Yes Power LED Off Solid on Off ~1 Hz blink Solid on 7.3.6 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 critical fault state). The system status LED is a bicolor LED. Green (status) shows 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 the other controllers, such as the SCSI / SATA hot-swap controller state, are included in the LED state. For fault states 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 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. Revision 1.9 57 Intel order number E53971-008

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Intel® Server Board S5500WB TPS
Connector/Header Locations and Pin-out
Revision 1.9
Intel order number E53971-008
57
7.3.5
Power LED
The green power LED is active when the system DC power is on. The power LED is controlled
by the BIOS. The power LED reflects a combination of the state of system (DC) power and the
system ACPI state. The following table identifies the different states that the power LED can
assume.
Table 34. Power LED Indicator States
State
ACPI
Power LED
Power off
No
Off
Power on
No
Solid on
S5
Yes
Off
S1 Sleep
Yes
~1 Hz blink
S0
Yes
Solid on
7.3.6
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 critical fault state).
The system status LED is a bicolor LED. Green (status) shows 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 the other controllers, such as the SCSI /
SATA hot-swap controller state, are included in the LED state. For fault states 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 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.