IBM Eserver xSeries 360 Type 8686, Руководство пользователя

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Chapter 6. Solving Problems
97
POST
When you turn on the server, it performs a series of tests to check the operation of
server components and some of the options that are installed in the server. This
series of tests is called the power-on self-test, or POST.
If POST finishes without detecting any problems, a single beep sounds, and the first
screen of the operating system or application program appears.
If POST detects a problem, more than one beep sounds, and an error message
appears on the screen. See “POST beep code descriptions” and “POST error
messages” on page 100 for more information.
Notes:
1. If you have a power-on password or administrator password set, you must type
the password and press Enter, when prompted, before POST will continue.
2. A single problem might cause several error messages. When this occurs, work to
correct the cause of the first error message. After you correct the cause of the
first error message, the other error messages usually will not occur the next time
you run the test.
POST beep code descriptions
Beep codes are sounded in a series of long and short beeps.
The possible types of beep codes that the server might emit include the following:
No beep
If no beep occurs after the server completes POST, call for service.
Continuous beep
The startup (boot) microprocessor has failed, or the system board or speaker
subsystem might contain a failing component. If the system continues
through POST with no errors, call for service. If no video appears, the startup
microprocessor has failed; replace the startup microprocessor.
One short beep
One beep indicates that the server successfully completed POST and that
POST did not detect any configuration or functional errors. One beep also
occurs after the server completes POST if you type an incorrect power-on
password.
Two short beeps
POST encountered an error. The Configuration/Setup Utility program
displays additional information; follow the instructions that appear on the
screen. See “POST error messages” on page 100 for descriptions of the text
messages that might appear.
Three short beeps
A system-memory error has occurred. This combination occurs only if the
video basic input/output system (BIOS) code cannot display the error
message. Replace the failing memory module.
Repeating short beeps
The system board might contain a failing component, the keyboard might be
defective, or a key on the keyboard might be stuck. Ensure that:
• Nothing is resting on the keyboard and pressing a key.
• No key is stuck.