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 types 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 system must be functional.

￿￿The keyboard must be functional.

NOTE

The BIOS ROM version number is displayed on the monitor screen during power-up.

WARNING You should always turn off the power and disconnect the power cord to the Server before attempting to remove the cover and touch 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.

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 diagnostics.

There are two types of error messages:

￿￿Power-onself-test (POST) messages – These text messages display in normal video (white text on black background). If a text message error occurs during the POST, details of the error are displayed. Follow the instructions on the screen. Samples of these messages appear in Table 4-1.

￿￿Beep Codes – These are a series of audible beeps, which occur during the boot process before the video display can initialize allowing the visual messages of the POST routines to appear. If you hear a series of audible beeps before the video appears on screen, refer to the beep codes listed in Chapter 5, “Error Messages.”

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