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190 Sun Fire 280R Server Owner’s Guide • January 2001
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-On Self-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-all
command by typing:
4. If the test-all command 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.
Video Output Failure
Symptom
No video at the system monitor.
Action
1. Check that the power cord is connected to the monitor and to the wall outlet.
2. Verify with a volt-ohm meter that the wall outlet is supplying AC power.
ok test-all