IBM 8478 Hardware Maintenance Manual - Page 22
descriptions, error, messages, Small, computer, system, interface, models
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POST beep code descriptions POST generates beep codes to indicate successful completion or the detection of a problem. v One short beep indicates the successful completion of POST. v More than one beep indicates that POST detected a problem. For more information, see "Beep symptoms" on page 99". POST error messages The possible types of beep codes that your system might emit are: Repeating long beeps Indicates that a memory error has occurred. Ensure that all DIMMs are correctly installed. One long beep and two short beeps Indicates that a video error has occurred and the BIOS cannot initialize the video screen to display any additional information. Ensure that the video adapter is correctly installed. For a list of POST errors, see "POST error codes" on page 110. Small computer system interface messages (some models) The following table lists actions to take if you receive a SCSI error message. Note: If the server does not have a hard disk drive, ignore any message that indicates that the BIOS is not installed. You will get these messages only when running the SCSI Select Utility. 12 Hardware Maintenance Manual: xSeries 200