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Note: Depending on the model, your server might look slightly different from the illustration in this topic.
The server is designed so that LEDs remain lit when the server is connected to an ac power source but is
not turned on, provided that the power supply is operating correctly. This helps you isolate problems
when the server is not turned on. Many errors are rst indicated by a lit error LED on the diagnostic panel
of the server. If an LED is lit, one or more LEDs elsewhere in the server might also be lit to direct you to
the source of the error.
The following illustration shows the ThinkServer Management Module status LED and system fan error LEDs
on the system board.
Figure 26. System board LEDs
1 ThinkServer Management Module status LED 5 System fan 3 error LED
2 System fan 7 error LED 6 System fan 2 error LED
3 System fan 6 error LED 7 System fan 1 error LED
4 System fan 5 error LED
1 ThinkServer Management Module status LED
This LED indicates the status of the onboard ThinkServer Management Module (TMM).
ThinkServer Management Module
status LED
Color
Description
On Green
The TMM is not ready.
Off
None
The TMM has no power or has failed.
Blinking
Green
The TMM is working.
40 ThinkServer RD330 User Guide