The following illustration shows the LEDs on the light path diagnostics panel.
Figure 74. LEDs on the light path diagnostics panel
Light path diagnostics LEDs
Use this information to diagnose possible errors that are indicated by the light path diagnostics LEDs.
The following table describes the LEDs on the light path diagnostics panel and the light path diagnostics
LEDs on the system board.
See “Viewing the light path diagnostics LEDs” on page 97 for information about lighting the LEDs.
Note: Additional information about error conditions is in the CMM event log.
Table 17. Light path diagnostics LEDs
Light path diagnostics LED Description
Light path diagnostics The power source for the light path diagnostics LEDs is charged.
System board The system board has failed.
NMI The system board has failed.
CPU Mismatch
The processors are mismatched.
Temperature The system temperature has exceeded a threshold level.
Memory A memory error has occurred.
Storage BP 1
A hard disk drive backplane error has occurred.
M.2 A M.2 backplane error has occurred.
System-board LEDs
Use this information to locate the system-board LEDs.
The following illustration shows the locations of the LEDs on the system board.
Chapter 4. Problem determination 99
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