IBM 867431X Hardware Maintenance Manual - Page 19
Diagnostics, Diagnostic tools overview
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Diagnostics This section provides basic troubleshooting information to help you resolve some common problems that might occur with the server/workstation. Diagnostic tools overview The following tools are available to help you identify and resolve hardware-related problems: v POST beep codes, error messages, and error logs The power-on self-test (POST) generates beep codes and messages to indicate successful test completion or the detection of a problem. See "POST" on page 12 for more information. v Diagnostic programs and error messages The server/workstation diagnostic programs are stored in upgradable read-only memory (ROM) on the system board. These programs are the primary method of testing the major components of your server/workstation. See "Diagnostic programs and error messages" on page 15 for more information. v Light Path Diagnostic The Light Path Diagnostic is used to quickly identify system errors. © Copyright IBM Corp. 2001 11