IBM 86655RY Hardware Maintenance Manual - Page 22

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 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, the first screen of the operating system or application program appears, and the System POST Complete (OK) light is illuminated on the operator information panel. If POST detects a problem, more than one beep sounds and an error message appears on the screen. See "POST beep codes" and "POST error messages" 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 codes POST generates beep codes to indicate successful completion or the detection of a problem. • One beep indicates the successful completion of POST. • More than one beep indicates that POST detected a problem. For more information, see "Beep symptoms" on page 215. POST error messages POST error messages occur during startup when POST finds a problem with the hardware or detects a change in the hardware configuration. For a list of POST errors, see "POST error codes" on page 226. Event/error logs The POST error log contains the three most recent error codes and messages that the system generated during POST. The System Event/Error Log contains all error messages issued during POST and all system status messages from the Netfinity Advanced System Management Processor. To view the contents of the error logs, start the Configuration/Setup Utility program; then, select Event/Error Logs from the main menu. Small computer system interface messages If you receive a SCSI error message, see "SCSI error codes" on page 236. 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 SCSISelect Utility. 12 Hardware Maintenance Manual: Netfinity 7600 - Type 8665 Models 1RY, 2RY