Lenovo 6525, 6523, 6524, 6530, 6522, 6526, 6528, 6529 manual Troubleshooting

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee the ″Parts Listing″ section in the Hardware Maintenance Manual to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Sensor PS n Therm Fault has	Error	A sensor has changed to	1.	Make sure that there are no
transitioned to critical from a less		Critical state from a less
				obstructions, such as bundled
severe state.		severe state.
				cables, to the airflow from the
(n = power supply number)
				power-supply fan.
			2.	Replace power supply n.
			(n = power supply number)
Sensor PS n 12 V OV Fault has	Error	A sensor has changed to	1.	Check the power-supply LED.
transitioned to non-recoverable.		Nonrecoverable state.
			2.	Remove the power supplies.
(n = power supply number)
			3.	Replace power supply n.
			4.	(Trained service technician
				only) Replace the system
				board.
			(n = power supply number)
Sensor PS n 12 V UV Fault has	Error	A sensor has changed to	1.	Check the power-supply LED.
transitioned to non-recoverable.		Nonrecoverable state.
			2.	Remove the power supplies.
			3.	Replace power supply n.
			4.	(Trained service technician
				only) Replace the system
				board.
			(n = power supply number)
Sensor PS n 12 V OC Fault has	Error	A sensor has changed to	1.	Check the power-supply LED.
transitioned to non-recoverable.		Nonrecoverable state.
			2.	Remove the power supplies.
(n = power supply number)
			3.	Replace power supply n.
			4.	(Trained service technician
				only) Replace the system
				board.
			(n = power supply number)
Sensor PS n VCO Fault has	Error	A sensor has changed to	1.	Check the power-supply LED.
transitioned to non-recoverable.		Nonrecoverable state.
			2.	Replace the failing power
(n = power supply number)
				supply.
			(n = power supply number)
Redundancy Power Unit has been	Error	Redundancy has been lost	1.	Check the LEDs for both
reduced.		and is insufficient to continue
				power supplies.
		operation.
			2.	Follow the actions in
				“Power-supply LEDs” on page
				24.

Chapter 8. Troubleshooting 163