Service Manual

Table 94. Power-up LED sequence (continued)
○ ○ ● ○ ○ ○ ● MEM VPP EN. Waiting for MEM VPP PGs
○ ○ ● ○ ○ ● ○ MEM VDDQ EN. Waiting for MEM VDDQ PGs
○ ○ ● ○ ○ ● ● MEM VTT EN. Waiting for MEM VTT PGs
○ ○ ● ○ ● ○ ○ CPU* VCCIO and PCIe clocks EN. Waiting for CPU VCCIO PGs
○ ○ ● ○ ● ○ ● CPU* VCORE/VSA EN. Waiting for CPU* VCORE+VSA PGs
○ ○ ● ○ ● ● ○ Waiting for NDC PG
○ ○ ● ○ ● ● ● Waiting for PCH PROCPWRGD
○ ○ ● ● ○ ○ ○ CPU* PG Asserted. SYS PWRGOOD Asserted
● ● ● ● ● ● ● RUN State
○ ○ ● ● ○ ● ○ PLTRST_N Asserted
○ ○ ● ● ○ ● ● CPU & MEM VR’s Shutdown
○ ○ ● ● ● ○ ○ MAIN Rails Shutdown (7 seconds)
Table 95. NvDIMM LED sequence
NvDIMM
LED7 LED6 LED5 LED4 LED3 LED2 LED1 Description
● ● ● ● ● ● ● RUN State – System operating normally
● ○ ○ ○ ● ○ ○ System powered down, NVsave in progress
● ○ ○ ● ● ○ ● NVsave complete. Asserting EMMC_PWROFF_NOTIFY_N to BMC
○ ○ ○ ○ ○ ○ ○ V_12V_SW powered down. System in G3, waiting for AC power
Table 96. System board LED sequence
Error
LED7 LED6 LED5 LED4 LED3 LED2 LED1 Description
B ○ ○ ○ ○ ○ B Config Error: CPU1 present? DIMMs OK? Install DBG JMPR1 to bypass
B B ○ ○ ○ B B CPU IERR
○ ● ● ● ● ● ○ CPU COMBINED MCERR
B B B B B B B Thermal Issue on CPU* or MEM
B ○ B B B ○ B Internal VR Issue on CPU*
B ○ ○ ● ○ ○ B AUX Power Failsafe
Table 97. Pfault or failsafe errors LED sequence
Pfault or Failsafe Errors
LED7 LED6 LED5 LED4 LED3 LED2 LED1 Description
* B ○ ○ ○ ○ ○ 12V Failure
* B ○ ○ ○ ○ ● 5V BP0 Failure
* B ○ ○ ○ ● ○ 5V BP1 Failure
* B ○ ○ ○ ● ● 5V BP2 Failure
* B ○ ○ ● ○ ○ 3.3V A Failure
* B ○ ○ ● ○ ● 3.3V B Failure
148 System diagnostics and indicator codes