HP LH4r HP Netserver LXr Pro8 Memory Board - Page 29

3 Troubleshooting Diagnostics Overview A set of diagnostics procedures and reporting facilities points you towards a troubleshooting solution if problems occur. The memory controller corrects minor (single-bit) errors in DIMM functioning. Errors are detected and reported both during boot-up testing and during run time. More serious, multiple-bit errors may require the user to replace a defective DIMM. The BIOS POST Test During the POST (Power-On Self-Test), the BIOS checks memory to ensure that all DIMMs are functioning correctly. The POST test checks physical locations (addresses) on individual DIMMs in a rotating manner. This revolving sequence of checks is called the Memory Count Display. If a bad memory location is detected, the BIOS will resize memory to eliminate the location. Refer to the following section for a description of the different types of memory errors that may occur. During the POST test, error message codes are reported on the screen for specified error conditions. The errors are logged in the Error Message Utility (EMU) and/or the Error Log Report Utility (ELRU)  part of the NetServer Utilities package on the HP NetServer Navigator CD-ROM. If you have booted from the HP Navigator CD-ROM, the EMU is launched automatically should errors be logged. Information is displayed for all POST errors. If you do not boot from the CD-ROM, you must run the HP Navigator CD-ROM or run the EMU from a pre-configured Utility Partition. NOTE All errors that occur during run time will be logged in the Error Log Report Utility (ELRU). Run the HP NetServer Navigator CD-ROM. From the main menu, choose the NetServer Utilities menu, then choose the Error Log Report Utility. 25