ProLiant ML110 Generation 2 Server Maintenance and Service Guide

Diagnostic Tools
Power-On Self Test (POST)
When the server boots up, a series of tests are displayed on the screen. This is referred to as
Power–On Self–Test or POST. POST is a series of diagnostic tests that checks firmware and
assemblies to ensure that the server is properly functioning. This diagnostic function
automatically runs 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 during POST. The number of tests
displayed depends on the configuration of the server.
During POST, you can:
• Press F8 to display the Boot menu.
• Press F10 to access the Setup Utility.
• Press F12 to request a network boot.
POST Error Indicators
When POST detects a system failure, it either:
• Displays a POST error message, or
• Emits a series of beep codes
Recoverable POST Errors
Whenever a non-fatal error occurs during POST, an error message describing the problem
appears onscreen. These text messages are displayed in normal video (white text on black
background). It shows the details of the error. The following is an example of a POST error
message:
Error message 1 of 1: Error code 0103
Keyboard not detected - Keyboard error
In some cases an error message may include recommendations for troubleshooting or require
that you press the Enter key to display recommendations. Follow the instructions on the
screen.
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