Video Output Failure, Run Post diagnostics

Action

1.Verify that the CPU modules and memory are seated correctly.

If RSC software has been installed and configured, connecting to the RSC using telnet or a modem connection may allow monitoring through the redirected system console.

2.Run POST diagnostics.

See “How to Isolate Failures Using Power-OnSelf-Test (POST)” on page 179.

3.Observe POST results.

The front panel general fault LED should blink slowly to indicate that POST is running. Check the POST output using a locally attached terminal or a tip connection. If you see no front panel LED activity, a power supply may be defective. See “About Power Supplies” on page 95.

If the POST output contains an error message, then POST has failed. The most probable cause for this type of failure is the main logic board. However, before replacing the main logic board you should run the OpenBoot Diagnostics test-allcommand by typing:

ok test-all

4.If the test-allcommand shows any defective components, remove them from the main logic board and run POST again.

Replace any failed components that are not optional. Be sure to leave DIMMs in Bank 0.

5.If POST still fails after you have removed or replaced all failed components, then replace the main logic board.