Table 5. Light Path Diagnostics (continued)
Diagnostics
panel LED
on
Cause
Action
CPU/VRM
MISMATCH
The service processor detected a
CPU or VRM mismatch.
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
The Light Path Diagnostics feature
has not detected a system error.
None
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
http://www.ibm.com/pc/support, click
IBM Server Support
, and make the
selections for your server.
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.
36
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