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Appendix D. POST error messages
This appendix identifies and describes the common POST error messages that you
might encounter, and gives corrective actions.
Power-on self-test
When you turn on your Model G00, it performs a power-on self-test (POST) to
check the operation of appliance components and some of the options installed in
the appliance.
If POST finishes without detecting any problems, you will hear one long and three
short beeps, when a monitor and keyboard are not attached to the appliance. When
a monitor and keyboard are attached, you will hear one short beep. Any other
series of beeps indicates a problem, and an error message appears on your
screen. See “POST beep code descriptions” for more information.
POST beep code descriptions
Beep codes are sounded in a series of beeps. For example, a 1-2-4 beep code
sounds like one beep, a pause, two consecutive beeps, another pause, and four
more consecutive beeps.
The possible types of beep codes that your appliance might emit include the
following:
No beeps
If no beep occurs after your appliance completes POST (that is, after the
system POST complete (OK) light on the operator information panel is
illuminated), call for service.
Continuous beep
The recovery enablement disk has booted, your startup (boot)
microprocessor has failed, or your 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 processor
has failed; replace the startup processor.
One short beep
When a monitor and keyboard is attached to the appliance, one beep
indicates that your appliance successfully completed POST. POST detected
no configuration or functional errors. One beep also occurs after your
appliance completes POST if you enter an incorrect power-on password.
Two short beeps
POST encountered an error. The Configuration/Setup Utility program will
display additional information; follow the instructions that appear on the
screen. See “POST error messages” on page 54 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) cannot display the error message.
Replace the failing memory module.
Repeating short beeps
The system board might contain a failing component, your keyboard might
be defective, or a key on the keyboard might be stuck. Ensure that:
© Copyright IBM Corp. 2001
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