Power Supply Light; System Lights - Dell OptiPlex SX280 Quick Reference Manual

Power Supply Light

Light PSU State
State
Off No AC, or a fault
condition occurred
Yellow AC present/no load
Green AC present/power to
load

System Lights

Your power button light and hard-drive light may indicate a computer problem.
Power Light Problem Description
Solid green power An integrated system board device may
light and no beep be faulty.
code but the
computer locks up
during POST
22
Quick Reference Guide
Description
Indicates that the power supply is not receiving power
from an electrical outlet, OR that the power supply
shut down due to a fault condition.
Indicates that the power supply is attached to working
electrical outlet but not connected to the computer.
Indicates that the power supply is receiving power
from the electrical outlet and is properly connected to
the computer.
Suggested Resolution
Check "Diagnostic Lights" on page 23 to see if the
specific problem is identified. If the problem is not
identified, contact Dell for technical assistance.
Troubleshooting
Ensure that the electrical outlet is
working by testing it with another
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.
Verify that the power supply is
completely plugged in to the
computer and the retention latch is
engaged. Reseat the connection if
necessary.
Check the power button light and
see "System Lights" on page 22.