Intel Server Board S2400BB

Intel® Server Board S2400BB TPS
Revision 2.0
73
Table 27. Power/Sleep LED Functional States
State
Power Mode
LED
Description
Power-off
Non-ACPI
Off
System power is off, and the BIOS has not initialized the chipset.
Power-on
Non-ACPI
On
System power is on
S5
ACPI
Off
Mechanical is off, and the operating system has not saved any context
to the hard disk.
S4
ACPI
Off
Mechanical is off. The operating system has saved context to the hard
disk.
S3-S1
ACPI
Slow blink
1
DC power is still on. The operating system has saved context and
gone into a level of low-power state.
S0
ACPI
Steady on
System and the operating system are up and running.
8.2.1.2 System ID Button and LED Support
Pressing the System ID Button will toggle both the ID LED on the front panel and the Blue ID LED on the
server board on and off. The System ID LED is used to identify the system for maintenance when installed in a
rack of similar server systems. The System ID LED can also be toggled on and off remotely using the IPMI
“Chassis Identify” command which will cause the LED to blink for 15 seconds.
8.2.1.3 System Reset Button Support
When pressed, this button will reboot and re-initialize the system
8.2.1.4 NMI Button Support
When the NMI button is pressed, it puts the server in a halt state and causes the BMC to issue a non-
maskable interrupt (NMI). This can be useful when performing diagnostics for a given issue where a memory
download is necessary to help determine the cause of the problem. Once an NMI has been generated by the
BMC, the BMC does not generate another NMI until the system has been reset or powered down.
The following actions cause the BMC to generate an NMI pulse:
• Receiving a Chassis Control command to pulse the diagnostic interrupt. This command does not
cause an event to be logged in the SEL.
• Watchdog timer pre-timeout expiration with NMI/diagnostic interrupt pre-timeout action enabled.
The following table describes behavior regarding NMI signal generation and event logging by the BMC.
Table 28. NMI Signal Generation and Event Logging
Causal Event
NMI
Signal
Generation
Front Panel Diag Interrupt Sensor Event Logging Support
Chassis Control command (pulse diagnostic interrupt)
X
–
Front panel diagnostic interrupt button pressed
X
X
Watchdog Timer pre-timeout expiration with
NMI/diagnostic interrupt action
X
X
8.2.1.5 NIC Activity LED Support
The Front Control Panel includes an activity LED indicator for each on-board Network Interface Controller
(NIC). When a network link is detected, the LED will turn on solid. The LED will blink once network activity
occurs at a rate that is consistent with the amount of network activity that is occurring.