Connector / Header Locations and Pin-out Intel® Server Board S5500WB TPS
Revision 1.3
Intel order number E53971-004
56
to generate an NMI (non-maskable interrupt). The NMI is captured by the BIOS during boot
services time and by the operating system during runtime. During boot services time, the BIOS
halts the system upon detection of the NMI.
7.3.4 Chassis Identify Button
The front panel Chassis Identify button toggles the state of the chassis ID LED. If the LED is off,
pushing the ID button lights the LED. It remains lit until the button is pushed again or until a
Chassis Identify or a Chassis Identify LED command is received to change the state of the LED.
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 33. 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.
To Next Page
Loading...
Need help?
General
