Lenovo RD540 manual ThinkServer Management Module status LED

The server is designed so that LEDs remain lit when the server is connected to an ac power source but is not turned on, if the power supply is operating correctly. This helps you isolate problems when the server is not turned on. Many errors are first 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 33. System board LEDs

	ThinkServer Management Module status LED		System fan 4 error LED
1		6
	System fan 8 error LED		System fan 3 error LED
2		7
	System fan 7 error LED		System fan 2 error LED
3		8
	System fan 6 error LED		System fan 1 error LED
4		9
	System fan 5 error LED
5

1

ThinkServer Management Module status LED

This LED indicates the ThinkServer Management Module (TMM) status of your server.

ThinkServer Management Module	Color	Description
status LED
On	Green	The TMM is not ready.
Off	None	The TMM has no power or has failed.
Blinking	Green	The TMM is working.

Chapter 3. Product overview 47