Table 7. LEDs on the light path diagnostics panel
Lit light path diagnostics LED Description
None The compute node is not sufficiently charged to display the LEDs on the system
board.
Light path The power source for the light path diagnostics LEDs is charged.
System board The system board has failed.
NMI A nonmaskable interrupt has occurred, or the NMI button was pressed.
CPU mismatch The processors are mismatched.
Temp The system temperature has exceeded a threshold level.
Memory A memory error has occurred.
Storage BP 1 and 2
A drive backplane or its drives error has occurred.
M.2 A M.2 drive error has occurred.
System-board layout
Use this information to locate the connectors, LEDs, and switches on the system board.
System-board connectors
Use this information to locate compute node system-board components and connectors for optional
devices.
The following illustration shows the system-board components, including connectors for user-installable
optional devices, in the compute node.
Chapter 2. Compute node components 19
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