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176 Sun Fire V490 Server Administration Guide • August 2004
3. Start POST diagnostics. Type:
The system runs the POST diagnostics and displays status and error messages via
either the local serial terminal (ttya) or the redirected (system controller) system
console.
4. Examine the POST output.
Each POST error message includes a “best guess” as to which field-replaceable unit
(FRU) was the source of failure. In some cases, there may be more than one possible
source, and these are listed in order of decreasing likelihood.
Note – Should the POST output contain code names and acronyms with which you
are unfamiliar, see
TABLE 6-13 in “Reference for Terms in Diagnostic Output” on
page 114.
What Next
Have a qualified service technician replace the FRU or FRUs indicated by POST
error messages, if any. For replacement instructions, see:
■ Sun Fire V490 Server Parts Installation and Removal Guide, which is included on the
Sun Fire V490 Documentation CD
If the POST diagnostics did not disclose any problems, but your system does not
start, try running the interactive OpenBoot Diagnostics tests.
ok post