IBM 86655RY Hardware Maintenance Manual - Page 42

Recovering BIOS If the BIOS code in the server has become corrupted, such as from a power failure during a flash update, you can recover the BIOS using the recovery boot block and a BIOS flash diskette. Note: You can obtain a BIOS flash diskette from one of the following sources: • Use the ServerGuide program to make a BIOS flash diskette. • Download a BIOS flash diskette from the World Wide Web. Go to http://www.pc.ibm.com/support/, select IBM Server Support, and make the selections for the server. The flash memory of the server consists of a primary page and a backup page. The J56 jumper controls which page is used to start the server. If the BIOS in the primary page is corrupted, you can use the backup page to start the server; then boot the BIOS Flash Diskette to restore the BIOS to the primary page. To recover the BIOS: 1. Turn off the server and peripheral devices and disconnect all external cables and power cords; then, remove the cover. 2. Locate jumper J56 on the processor board (see "Processor board jumpers" on page 57). 3. Move J56 to pins 1 and 2 to enable secondary boot block page. 4. Insert the BIOS flash diskette into the diskette drive. 5. Restart the server. 6. The system begins the power-on self-test (POST). Select 1 - Update POST/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 image to 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 your language (0-7) and press Enter to accept your choice. You will be prompted to remove the diskette and press Enter to restart the system. Remove the flash diskette from the diskette drive. Attention: Do not press Enter to reboot the system at this time. 10. Power-off the server. 11. Move jumper J56 back to pins 2 and 3 to return to normal startup mode. 12. Restart the server. The system should start up normally. Replacing the battery IBM has designed this product with your safety in mind. The lithium battery must be handled correctly to avoid possible danger. If you replace the battery, you must adhere to the following instructions. CAUTION: When replacing the battery, use only IBM Part Number 33F8354 or an equivalent type battery recommended by the manufacturer. If your system has a module containing a lithium battery, replace it only with the same module type made by 32 Hardware Maintenance Manual: Netfinity 7600 - Type 8665 Models 1RY, 2RY