IBM x3550 - System - 7978, Problem Determination And Service Manual

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System board switch
block (SW2)
NMI (SW1)
8 7 6 5 4 3 2 1
ON
1
2
3
Boot block recovery
jumper (J14)
4. Move the jumper from pins 1 and 2 to pins 2 and 3 to enable the BIOS
recovery mode.
5. Connect an external USB diskette drive to the server and insert the BIOS
update diskette.
6. Reinstall the server cover; then, reconnect all power cords.
7. Restart the server. The system begins the power-on self test (POST).
8. Select 1 - Update POST/BIOS from the menu that contains various flash
update options.
9. When prompted as to whether you want to save the current code to a diskette,
press N .
10. When prompted to choose a language, select a language (from 0 to 7), and
press Enter to accept your choice.
11. Remove the BIOS update diskette from the diskette drive.
12. Turn off the server, and disconnect all power cords and external cables; then,
remove the server cover.
13. Remove the jumper from the boot block recovery jumper block, or move it to
pins 1 and 2, to return to normal startup mode.
14. Reconnect all external cables and power cords, and turn on the peripheral
devices; then, reinstall the server cover.
15. Restart the server. The server starts up normally.
Chapter 5. Diagnostics
157