Dell X2956 manual Power Supply Light, System Lights, Light PSU State Description Troubleshooting

w w w . d e l l . c o m s u p p o r t . d e l l . c o m

Power Supply Light

Light	PSU State	Description	Troubleshooting
State
Off	No AC, or a fault	Indicates that the power supply is not receiving power	Ensure that the electrical outlet is
	condition occurred	from an electrical outlet, OR that the power supply	working by testing it with another
		shut down due to a fault condition.	device, such as a lamp.
			Verify that the AC power cable
			connection is properly seated in the
			power supply. If necessary, reseat the
			AC cable connection at the power
			supply.
			Disconnect the AC power cable
			from the power supply and the DC
			cable from the computer for at least
			10 seconds. Reattach the AC power
			cable to the power supply. The light
			on the power supply should turn
			yellow. Reattach the DC cable to the
			computer. The light on the power
			supply should turn green.
Yellow	AC present/no load	Indicates that the power supply is attached to working	Verify that the power supply is
		electrical outlet but not connected to the computer.	completely plugged in to the
			computer and the retention latch is
			engaged. Reseat the connection if
			necessary.
Green	AC present/power to	Indicates that the power supply is receiving power	Check the power button light and
	load	from the electrical outlet and is properly connected to	see "System Lights" on page 22.
		the computer.

System Lights

Your power button light and hard-drive light may indicate a computer problem.

Power Light	Problem Description	Suggested Resolution
Solid green power	An integrated system board device may	Check "Diagnostic Lights" on page 23 to see if the
light and no beep	be faulty.	specific problem is identified. If the problem is not
code but the		identified, contact Dell for technical assistance.
computer locks up
during POST

22

Quick Reference Guide