
Intel® Workstation Board S5520SC TPS Intel® Light Guided Diagnostics
Revision 1.7
Intel order number: E39530-010
121
8. Intel
®
Light Guided Diagnostics
The workstation board has several onboard diagnostic LEDs to assist in troubleshooting board-
level issues. This section provides a description of the location and function of each LED on the
workstation board.
8.1 5-V Stand-by LED
Several workstation management features of this workstation board require a 5-V stand-by
voltage is supplied from the power supply. The features and components that require this
voltage must be present when the system is “Off” including the Integrated BMC, onboard NICs,
and optional Intel
®
RMM3 connector with Intel
®
RMM3 installed.
The 5-V Stand-by LED is located near the SAS module slot in the lower-left corner of the
workstation board and is labeled “5VSB_LED”. It is illuminated when AC power is applied to the
platform and 5-V stand-by voltage is supplied to the workstation board by the power supply.
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