IBM xSeries 342 2RX Maintenance Manual

Contents

Diagnostic error message tablesFor descriptions of the error messages that might appear when you run thediagnostic programs see “Diagnostic error codes” on page 85.Attention: If diagnostic error messages appear that are not listed in the tables,make sure that your server has the latest levels of BIOS, Integrated SystemManagement Processor, ServeRAID, and diagnostics microcode installed.Recovering BIOS codeIf your BIOS code has become damaged, such as from a power failure during aflash update, you can recover your BIOS using the recovery boot block and a BIOSflash diskette.Note: You can obtain a BIOS flash diskette from one of the following sources:v Use the ServerGuide program to make a BIOS flash diskette.v Download a BIOS flash diskette from the World Wide Web. Go tohttp://www.ibm.com/pc/support/, click IBM Server Support, and makethe selections for your server.v Contact your IBM service representative.The flash memory of your server contains a protected area that cannot beoverwritten. The recovery boot block is a section of code in this protected area thatenables the server to start up and to read a flash diskette. The flash utility recoversthe system BIOS from the BIOS recovery files on the diskette.To recover the BIOS:1. Turn off the server and peripheral devices and disconnect all external cablesand power cords; then, remove the cover.2. Locate the boot-block jumper block (J16) on the system board.3. Place a jumper on pins 2 and 3 to enable BIOS backup page.4. Insert the BIOS flash diskette into the diskette drive.5. Restart the server.6. The system completes the power-on self-test (POST). Select 1 -- UpdatePOST/BIOS from the menu that contains various flash (update) options.7. When you are asked if you would like to move the current POST/BIOS imageto the backup ROM location, type N.Attention: Typing Y will copy the corrupted BIOS into the secondary page.8. When you are asked if you would like to save the current code to a diskette,select N.9. You will be asked to choose which language you wish to use. Select yourlanguage (0-7) and press Enter to accept your choice. You will be prompted toremove the diskette and press Enter to restart the system. Remove the flashdiskette from the diskette drive.10. Turn off the server.11. Remove the jumper on the boot-block jumper block or move it to pins 1 and 2to return to normal startup mode.12. Restart the server. The system should start up normally.16 Hardware Maintenance Manual: xSeries 342 Model 1RX, 2RX, 1TG, 2TG