Look at the system service label inside the server cover, which gives an
overview of internal components that correspond to the LEDs on the light path
diagnostics panel. This information and the information in “Light path
diagnostics LEDs” on page 109 can often provide enough information to
diagnose the error.
3. Remove the server cover and look inside the server for lit LEDs. Certain
components inside the server have LEDs that are lit to indicate the location of a
problem.
The following illustration shows the LEDs on the system board.
Light path diagnostics panel
The light path diagnostics panel is available on the top of the advanced operator
information panel. For additional information about the light path diagnostics and
LEDs on the light path diagnostics panel, see “Light path diagnostics” on page 106
and “Light path diagnostics LEDs” on page 109.
The following illustration shows the optional advanced light path diagnostics
panel.
Chapter 4. Troubleshooting 107
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