Recovering Bios - IBM xSeries 200 Hardware Maintenance Manual

3. Remove adapters and disconnect the cables and
power connectors to all internal and external devices
until server is at minimum configuration required for
power on (see "Minimum operating requirements" on
page 117).
4. Reconnect the AC cord and power on the server. If the
server powers up successfully, replace adapters and
devices one at a time until the problem is isolated. If
server does not power up from minimal configuration,
replace FRUs of minimal configuration one at a time
until the problem is isolated.
To use this method it is important to know the minimum
configuration required for a server to power up (see page
117).

Recovering BIOS

If the BIOS has become corrupted, such as from a power
failure during a flash update, you can recover the BIOS
using the boot block jumper and a BIOS flash diskette. The
boot block jumper selects which of two BIOS images to
use. In the normal position, the jumper will be installed on
pins 2 and 3. In the alternate block position, the jumper will
be installed on pins 1 and 2.
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 files to make a BIOS flash diskette
from the World Wide Web. Go to
http://www.pc.ibm.com/support/ select IBM
System Support, and then make the selections
for your system.
Do the following to recover the BIOS:
1. Turn off the server and peripheral devices and
disconnect all external cables and power cords; then,
remove the side cover, see "Removing the side cover"
on page 46.
2. Locate jumper JROM1 on the system board.
18
Hardware Maintenance Manual: xSeries 200