Dell PowerEdge T360 Installation and Service Manual

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System board diagnostic LED indicators

The system board LED indicators provide status of the system when it is powered on, which help identify POST and hardware issues.

The following tables show the behavior system board diagnostic LED indicators during power sequencing and power faults.

Table 1. LegendThis table shows the LED status.
LED status
LED ON
LED OFF
Blink	B

Table 2. System board diagnostic LED indicators during power sequencingThis table shows the behavior system board diagnostic LED indicators during power sequencing.
LED 6	LED 5	LED 4	LED 3	LED 2	LED 1	LED 0	Description
							IDLE：System waiting for PS1/2_AC_OK or (CARDEDGE_CABLE_PRES_N = 0)
							S6_IDLE：Waiting for ((PS1/2_PG and PS1/2_Enable) or (CARDEDGE_CABLE_PRES_N = 0 and PWRGD_PS_PWROK)) and ((BmcPostReady and PsUpdateInProgress = 0) or BmcBootFirstEnable = 0), if cVACRequest then KULL_AUX
							S5_STATE2：Waiting for PCH_SLP_SUS_NS5
							S5_STATE3：Waiting for VRD_0P82_PCH_PG
							S5_STATE4：Waiting for VRD_1P05_PCH_PG
							S5_STATE5：Waiting for PCH_R SMRST_N
							S5_IDLE：Waiting for PCH_SLP_S5_N if cVACRequest then KULL_AUX if c12vMainPwrDn then KULL_MAIN if c12vMainPwrDn then KULL_MAIN
							S0_STATE0 ： Waiting for BmcHoldSysInS5 = 0 and PCH_SLP_S3_N and CpuConfigGood Allen: replaced by PCH_SLP_S3_N, PCH_PWR_ON_REQ as unused pin
							S0_STATE1 ： Waiting for (PS1/2_AC_OK or (CARDEDGE_CABLE_PRES_N = 0 an d PWRGD_PS_PWRO K)) and VRD_3P3_M AIN_PGand VRD_1P1_MAIN_PG and VRD_P5V_PGand BP_PG
							S0_STATE2：Waiting for VRD_PVCC1V05_CPU_PG
							S0_STATE3：Waiting for VRD_PVCCDD2_CPU_PG
							S0_STATE4：Waiting for VRD_PVCCIN_AUX_PG
							S0_STATE5：Waiting for VRD_PVCC1P8_CPU_PG
							S0_STATE6：Waiting for VRD_PVCC_CORE_PG
							S0_RUN: System Run if (SdpmBmcAllowPmArm and SdpmMode and SdpmHostReqPmArm) then RUN_SDPM _ARMED if CpsPmArmed then RUN_CPS_ARMED
							PD_INIT: if PCH_SLP_S3_N = 0 or DelayedCpuPg = 0 then PD_STATE1 if cTotalDcLossFlag then SPD_STATE1, if cDpuPwrDownGate then DPU_PD_STATE1
							PD_IDLE: if PCH_SLP_S5_N = 0 and then S5_IDLE, if cTotalDcLossFlag = 1 then SPD_STATE1 if cAnyPwr Fault =1 and cAnyM empFault = 0 then KULL_MAIN, if cAnyM empFault= 1 then DIM M_PFAULT
							SPD_STATE2: Waiting for CombinedCpuPgs (VRD_3P3_M AIN_PGand VRD_PVCC_CORE_PG and PCH_CPLD_PROCPWRGD) = 0
							SPD_IDLE: Waiting for TotalPowerLossFlag = 0 or Total DCLossFlag = 0 or PfaultFlag = 0
							VAC: Waiting forever
							KULL_MAIN : if cAuxPGpFault= 1and Waitingfor7secondsthen AUX_FAILSAFE,ifcAuxPGpFault=0and cMainPGpFault=1andcMainFailsafe=1andWaitingfor7seconds then MAIN_FAILSAFE,ifcAuxPGpFault=0andcMainPGpFault=1and cMainFailsafe=0and Waitingfor7secondsthen PFAULT if cAuxPGpFault= 0and cMainPGpFault=0and Waitingfor7secondsthenS6_IDLE
							PFAULT: if cPfaultFlag = 0 and cMainPGpFault = 0 and cAnyPwrFault = 0 then S6_IDLE
							MAIN_FAILSAFE: if cMainFailsafeFlag = 0 and cMainFailsafe = 0 and cAnyPwrFault = 0 then S6_IDLE
							AUX_FAILSAFE: Waiting forever
							DIM M_PF AULT: if cAuxPGpFault then KULL_M AIN, if cTotalDcLossFlag then SPD_STATE1 if (cMainFailsafeFlag = 0 and cMainFailsafe = 0 and cAnyPwrFault = 0and wait for 7 secon ds) th en S5_IDLE
							DPU_PD_STATE1:Waiting for Total DCLossF lag

NOTE: At S6_STATE1~ S0_RUN and RUN_SDPM _ARMEDwhen PCH_SLP_S3_N from 1 to 0 (PowerDownRequest) then go to state PD_INIT

Table 3. System board diagnostic LED indicators during power faultsThis table shows the behavior system board diagnostic LED indicators during power faults.
LED 6	LED 5	LED 4	LED 3	LED 2	LED 1	LED 0	Description
						B	VRD_0P82_PCHFault
					B		VRD_1P05_PCHFault
					B	B	VRD_1V175_SWFault
				B	B		VRD_P5VFault
				B			VRD_3P3_MAINFault
						B	VRD_1P1_MAINFault
		B					VRD_PVCC1V05_CPUFault
		B			B		VRD_PVCCDD2_CPUFault
		B		B			VRD_PVCCIN_AUXFault
		B		B	B		VRD_PVCC1P8_CPUFault
		B	B				VRD_PVCC_COREFault
B	B	B					Cabled PSU Fault