Datasheet

1U Server Chassis SR1300 Front Panel Assembly

Revision 1.2

Intel order number A94544-004

5.3.1 Power / Sleep LED

The BIOS controls the front panel Power LED as described in the following table.

Table 18. SSI Power LED Operation

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, but the BIOS has not yet initialized the chipset

S5 ACPI OFF Mechanical Off, and the OS has not saved any context to the hard disk

S4 ACPI OFF Mechanical Off. The OS has saved context to the hard disk

S3-S1 ACPI Slow Blink 1 DC Power is still on. The OS has saved context and gone into some

level of low-power state

S0 ACPI Steady On System and the OS are up and running

Note:

Blink rate is ~1 Hz with at 50% duty cycle

5.3.2 System Status LED

Critical Condition

Any critical or non-recoverable threshold crossing associated with the following events:

• Temperature, voltage, or fan critical threshold crossing

• Power subsystem failure. The BMC asserts this failure whenever it detects a power

control fault (e.g., the BMC detects that the system power is remaining on even though

the BMC has deasserted the signal to turn off power to the system). A hot-swap

backplane would use the Set Fault Indication command to indicate when one or more of

the drive fault status LEDs are asserted on the hot-swap backplane

• The system is unable to power up due to incorrectly installed processor(s), or processor

incompatibility

• Satellite controller sends a critical or non-recoverable state, via the Set Fault Indication

command to the BMC

• “Critical Event Logging” errors, including: System Memory Uncorrectable ECC error and

Fatal/Uncorrectable Bus errors, such as PCI SERR and PERR