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4 Diagnostics
When the server boots, a series of tests are displayed on the screen. The number of tests displayed depends on
the configuration of the server. The following are the kinds of errors a user might get with the HP Server:
· Built-in diagnostic Error Messages.
· BIOS and other error messages. These are errors detected by the system BIOS outside the built-in
diagnostics or application errors.
To see the Power On Self-Tests (POST):
· The HP Server must be functionally able to run the diagnostics.
· The video subsystem must be functional.
· The keyboard must be functional.
NOTE BIOS ROM version number is displayed on the monitor screen during power-up.
Power-On Self Test (POST)
The diagnostics (Power-On Self-Test "POST") run automatically each time the server is powered on. These
diagnostics, which reside in the BIOS ROM, isolate server-related logic failures and indicate the board or
component that needs to be replaced, as indicated by the Error Messages. Most server hardware failures will
be accurately isolated by the diagnostic.
WARNING You should always turn off the power and disconnect the power cord to the server before
opening the HP Server and touching the internal components. Failing to do so can expose
you to electric shock and the server's components to damage. The power switch does
NOT turn off standby power, so disconnect the power cord to turn off standby power.
There are two kinds of error messages that appear during the POST process and the causes of these messages
may prevent the server from completing the boot process. These are:
· Messages in reverse video (black text on white background).
Refer to the HP Server Navigator CD-ROM to see a definition of the message and what action to take to
remedy the problem.
· Power-On Self Test (POST) errors - These display in normal video (white text on black background)
and may be a text message or an alpha-numeric code. If an error with a text message occurs during the
POST, details of the error are displayed. Follow the instructions on the screen. If an alpha-numeric code
appears, refer to the HP Server Online Documentation CD-ROM.