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Front Panel System Status LED Indicators

RBT-8200 Wireless Switch Installation Guide 1-7

Power/Sleep LED

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

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(forexample,theBMCdetectsthatthesystempowerisremainingoneventhoughthe

BMChasinstructed

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,using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.

Table 1-6 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: Link rate is ~1 Hz at 50% duty cycle.

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