Lenovo RD540 manual Rear view of the server

	LED	Status	Description	Action
	Ambient temperature	Solid off	The server is running at a normal
2
limit LED			temperature.
		Solid on (amber)	The ambient temperature is below	Check the BMC for errors and
			7°C (44.6°F) or over 40°C (104°F).	run the diagnostic programs. See
				“Using a diagnostic program” on
				page 160.
	System fan error LED	Solid off	The system fans are operating
3
			correctly.
		Solid on (amber)	One or more system fans are	Check the BMC for errors and
			running at low speed or have	run the diagnostic programs. See
			been removed.	“Using a diagnostic program” on
				page 160.
				Note: To identify the failing
				system fans, check the status
				LEDs on the system board. See
				“System board LEDs” on page
				46.
	Memory module	Solid off	The memory modules
4
status LED			are operating at a normal
			temperature.
		Solid on (amber)	One or more memory modules	Check the BMC for errors and
			are overheated.	run the diagnostic programs. See
				“Using a diagnostic program” on
				page 160.
	Microprocessor	Solid off	The microprocessors are
5
status LED (also known			operating at a normal
as CPU error LED)			temperature.
		Solid on (amber)	One or more microprocessors are	Check the BMC for errors and
			overheated.	run the diagnostic programs. See
				“Using a diagnostic program” on
				page 160.

Rear view of the server

This topic provides information to help you locate the connectors and components on the rear of your server.

22ThinkServer RD540 User Guide and Hardware Maintenance Manual