Recovering The Bios Code - IBM 8670M1X User Manual

Table 5. Light Path Diagnostics (continued)
Diagnostics Cause
panel LED
on
CPU/VRM The service processor detected a
MISMATCH microprocessor or VRM mismatch.
None The Light Path Diagnostics feature
has not detected a system error.
If the system error LED is off, the Light Path Diagnostics feature has not detected a
system error.

Recovering the BIOS code

If the BIOS code has become damaged, such as from a power failure during a flash
update, you can recover the BIOS code using the boot block jumper and a BIOS
flash diskette.
Note: You can obtain a BIOS flash diskette from one of the following sources:
v Use the ServerGuide Setup and Installation CD to make a BIOS flash diskette.
v Download a BIOS flash diskette from the World Wide Web. Go to
v Contact your IBM service representative.
The flash memory of your server contains a protected area that cannot be
overwritten. The recovery boot block is a section of code in this protected area that
enables the server to start up and to read a flash diskette. The flash utility recovers
the system BIOS code from the BIOS recovery files on the diskette.
Complete the following steps to recover the BIOS code:
36
xSeries 345 Type 8670: Hardware Maintenance Manual and Troubleshooting Guide
http://www.ibm.com/support, click IBM Server Support, and make the selections
for your server.
1. Turn off the server, and disconnect all power cords and external cables.
2. Remove the server cover. See "Removing the cover and bezel" on page 48 for
more information.
3. Locate the flash boot block recovery jumper block (J34) on the system board.
Action
1. Move the microprocessor in socket 1 to socket 2, and
move the microprocessor in socket 2 to socket 1.
2. Ensure that both microprocessors are of the same type,
with the same core frequency and the same L2 size.
3. Ensure that both VRMs are of the same type.
4. Ensure that both VRMs are supported in your server
model.
5. If a microprocessor is missing from socket 1, install a
microprocessor in socket 1.
None