IBM 220, Hardware Maintenance Manual

Page: 25 / 178

Diagnostics
17
3. Move J38 to the lo setting (pins 1 and 2) to enable BIOS recovery mode.
4. Reconnect all external cables and power cords and turn on the peripheral devices.
5. Insert the BIOS flash diskette in the diskette drive.
6. Restart the server. The system begins the power-on self-test (POST).
7. Select 1 - Update POST/BIOS from the menu that contains various flash (update)
options.
8. When prompted as to whether you want to save the current code to a diskette,
press N.
9. When prompted to choose a language, select a language (from 0 to 7) and press
Enter
to accept your choice.
10. Do not restart your system at this time.
11. Remove the BIOS flash diskette from the diskette drive.
12. Turn off the server.
13. Move jumper J38 to the hi setting (pins 2 and 3) to return to normal startup mode.
14. Restart the server.
Identifying problems using status LEDs
The server has diagnostic LEDs to help you identify problems with some server
components. Use the diagnostic LEDs to identify the failing or incorrectly installed
components.
Flash ROM
page-swap
jumper (J38)
Switch block