Lenovo 3822, 3821, 3719, 3823 manual Power-supply LEDs Error Description Action

Table 3. Power-supply LEDs

	Power-supply LEDs
AC		DC	Error	Description	Action		Notes
Off		Off	Off	No ac power to	1.	Check the ac power to the server.	This is a normal
				the server or a			condition when no
					2.	Make sure that the power cord is
				problem with the			ac power is present.
				ac power source		connected to a functioning power
						source.
					3.	Turn the server off and then turn the
						server back on.
					4.	If the problem remains, replace the
						power supply.
Off		Off	On	No ac power to	1.	Replace the power supply.	This happens only
				the server or a			when a second
					2.	Make sure that the power cord is
				problem with the			power supply is
				ac power source		connected to a functioning power	providing power to
						source.
				and the power			the server.
				supply had
				detected an
				internal problem
Off		On	Off	Faulty power	Replace the power supply.
				supply
Off		On	On	Faulty power	Replace the power supply.
				supply
On		Off	Off	Power supply not	1.	Reseat the power supply.	Typically indicates
				fully seated,	2.	If the system-board error LED is not lit,	that a power supply
				faulty system			is not fully seated.
				board, or faulty		replace the power supply.
					3.	(Trained service technician only) If
				power supply
						system-board error LED is lit, replace
						the system board.
On		Off or	On	Faulty power	Replace the power supply.
		Flashing		supply
On		On	Off	Normal operation
On		On	On	Power supply is	Replace the power supply.
				faulty but still
				operational

Chapter 5. Diagnostics 89