IBM 865741Y Hardware Maintenance Manual - Page 13
General Checkout, Passed, Failed, Aborted - computers
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General Checkout Attention The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive. Diagnostic error messages appear when a test program finds a problem with a hardware option. For the test programs to properly determine if a test Passed, Failed, or Aborted, the test programs check the error-return code at test completion. General error messages appear if a problem or conflict is found by an application program, the operating system, or both. For an explanation of these messages, refer to the information supplied with that software package. Notes 1. Before replacing any FRUs, ensure the latest level of BIOS is installed on the system. A down-level BIOS might cause false errors and unnecessary replacement of the system board. 2. If multiple error codes are displayed, diagnose the first error code displayed. 3. If the computer hangs with a POST error, go to "Symptom-to-FRU index" on page 142. 4. If the computer hangs and no error is displayed, go to "Undetermined problem" on page 189. 5. If an installed device is not recognized by the diagnostics program, that device might be defective. The power-on default is quick bring-up. To enable Enhanced bring-up, select the Start Options in the Configuration/Setup Utility program (see "Start Options" on page 28) then, enable Power On Status. A failed system might be part of a shared DASD cluster (two or more systems sharing the same external storage device(s)). Prior to running diagnostics, verify that the failing system is not part of a shared DASD cluster. A system might be part of a cluster if: The customer identifies the system as part of a cluster. One or more external storage units are attached to the system and at least one of the attached storage units is additionally attached to another system or unidentifiable source. One or more systems are located near the failing system. Netfinity 8655 - Type 8655 5