Service Manual

Table 97. Pfault or failsafe errors LED sequence (continued)
* B ○ ○ ● ● ○ 5V SW Failure
* B ○ ○ ● ● ● 1.05V SW Failure
* B ○ ● ○ ○ ○ CPU1 VCORE Failure
* B ○ ● ○ ○ ● CPU2 VCORE Failure
* B ○ ● ○ ● ○ CPU1 VCCIO Failure
* B ○ ● ○ ● ● CPU2 VCCIO Failure
* B ○ ● ● ○ ○ CPU1 VSA Failure
* B ○ ● ● ○ ● CPU2 VSA Failure
* B ○ ● ● ● ○ CPU1 MEM012 VTT Failure
* B ○ ● ● ● ● CPU1 MEM345 VTT Failure
* B ● ● ○ ○ ○ CPU2 MEM012 VTT Failure
* B ● ○ ○ ○ ● CPU2 MEM345 VTT Failure
* B ● ○ ○ ● ○ CPU1 MEM012 VPP Failure
* B ● ○ ○ ● ● CPU1 MEM345 VPP Failure
* B ● ○ ● ○ ○ CPU2 MEM012 VPP Failure
* B ● ○ ● ○ ● CPU2 MEM345 VPP Failure
* B ● ○ ● ● ○ CPU1 MEM012 VDDQ Failure
* B ● ○ ● ● ● CPU1 MEM345 VDDQ Failure
* B ● ○ ○ ○ ○ CPU2 MEM012 VDDQ Failure
* B ● ● ○ ○ ● CPU2 MEM345 VDDQ Failure
* B ● ● ○ ● ○ V_PVNN SW Failure
* B ● ● ○ ● ● 1.8V SW Failure
* B ● ● ● ○ ○ V_VSB11 SW Failure
* B ● ● ● ○ ● V_VSBM SW Failure
* B ● ● ● ● ○ NDC Failure
* B ● ● ● ● ● 2.5V SW Failure
Enhanced Preboot System Assessment
If you experience an issue with the system, run the system diagnostics before contacting Dell for technical support. The purpose
of running system diagnostics is to test the system hardware without requiring more equipment or risking data loss. If you are
unable to fix the issue yourself, service and support personnel can use the diagnostics results to help you solve the issue.
Dell Embedded system diagnostics
NOTE: The Dell Embedded System Diagnostics is also known as Enhanced Preboot System Assessment (ePSA) diagnostics.
The embedded system diagnostics provides options for particular device groups or devices that allow you to:
● Run tests automatically or in an interactive mode.
● Repeat tests
● Display or save test results.
● Introduce more test options for extra information about the failed devices, run a thorough test.
System diagnostics and indicator codes
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