HP 3080 manual Table C-2Solving Power Problems, Power supply shuts down intermittently

Solving Power Problems

Common causes and solutions for power problems are listed in the following table.

Table C-2Solving Power Problems

Power supply shuts down intermittently.

Cause	Solution
Voltage selector switch on rear of computer chassis (some	Select the proper AC voltage using the selector switch.
models) not switched to correct line voltage (115V or 230V).
Power supply will not turn on because of internal power	Contact an authorized service provider to replace the power
supply fault.	supply.
Computer powered off automatically.
Cause	Solution
Processor thermal protection activated:	1.	Ensure that the computer air vents are not blocked and
A fan may be blocked or not turning.		the processor cooling fan is running.
	2.	Open hood, press power button, and see if the
OR
		processor fan spins. If the processor fan is not spinning,
The heatsink is not properly attached to the processor.		make sure the fan's cable is plugged onto the system
		board header.
	3.	If fan is plugged in, but is not spinning, then replace the
		heatsink/fan assembly.
	4.	Contact an authorized reseller or service provider.
Power failure (power supply is overloaded).	1.	Check that the voltage selector, located on the rear of
		the power supply (some models), is set to the
		appropriate voltage. Proper voltage setting depends on
		your region.
	2.	Open the hood and ensure the power supply cable is
		seated into the connector on the system board.
	3.	Check if a device is causing the problem by removing
		ALL attached devices (such as hard drives or optical
		drives, and expansion cards). Power on the system. If
		the system enters the POST, then power off and
		replace one device at a time and repeat this procedure
		until failure occurs. Replace the device that is causing
		the failure. Continue adding devices one at a time to
		ensure all devices are functioning properly.
	4.	Replace the power supply.
	5.	Replace the system board.

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