Dell OptiPlex GX280 - Manual (Page 152)

If the power light is off — The computer is either turned off or is not receiving power.
Reseat the power cable into both the power connector on the back of the computer and the electrical
outlet.
If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical
outlet and that the power strip is turned on. Also bypass power protection devices, power strips, and
power extension cables to verify that the computer turns on properly.
Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
Ensure that the main power cable and front panel cable are securely connected to the system board.
If the power light is amber and green or steady amber — A device might be malfunctioning or
incorrectly installed.
Remove and then reinstall the memory modules .
Remove and then reinstall any cards.
Remove and then reinstall the graphics card, if applicable.
If the power light is blinking amber —
The computer is receiving electrical power, but an internal power problem might exist.
Ensure that the voltage selection switch is set to match the AC power at your location (if applicable).
Ensure that the processor power cable is securely connected to the system board.
Eliminate interference — Some possible causes of interference are:
Power, keyboard, and mouse extension cables
Too many devices on a power strip
Multiple power strips connected to the same electrical outlet
Printer Problems
Fill out the Diagnostics Checklist as you complete these checks.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in
the Product Information Guide.
NOTE: If you need technical assistance for your printer, contact the printer's manufacturer.
Check the printer documentation — See the printer documentation for setup and troubleshooting
information.
Ensure that the printer is turned on
Check the printer cable connections —
See the printer documentation for cable connection information.
Ensure that the printer cables are securely connected to the printer and the computer.
Test the electrical outlet — Ensure that the electrical outlet is working by testing it with another device,
such as a lamp.
Verify that the printer is recognized by Windows —
Windows XP