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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 from the BIOS recovery files on the diskette.
To recover the BIOS:
Diagnostic error message tables
Error messages indicate that a problem exists; they are not intended to be used to
identify a failing part. Troubleshooting and servicing of complex problems indicated
by error messages should be performed by trained service personnel.
Sometimes the first error to occur causes additional errors. In this case, the server
displays more than one error message. Always follow the suggested action
instructions for the first error message that appears.
"Running diagnostic programs" on page 111 gives instructions for running the
diagnostic programs.
The following pages contain the error codes that you might receive in the diagnostic
program detailed test log and summary log when running the diagnostic programs
for your server.
Contact your IBM service representative.
Before you begin:
Read "Electrical safety" on page 42 and "Handling static-sensitive devices" on
page 44.
1. Turn off the server and peripheral devices and disconnect all external cables
and power cords (see "Preparing to install options" on page 46); then remove
the cover (see "Removing the left-side cover (tower model)" on page 48 or
"Removing the cover (rack model)" on page 49).
2. Locate switch block 2 (SW2) on the processor board (see "Processor-board
component locations" on page 101).
3. Set switch 1 on switch block 2 to ON to enable BIOS recovery mode.
4. Insert the BIOS flash diskette into the diskette drive.
5. Restart the server.
The Recovery Boot screen will appear. A progress report, Loading data from
diskette xx%, is displayed. When programming is underway, a further
progress report, Programming block n of 7 yy%, is displayed. When recovery
is complete, Recovery complete, remove the diskette and return boot block
switch to the off position before rebooting..
6. Remove the flash diskette from the diskette drive.
7. Turn off the server.
8. Set switch 1 on switch block 2 (SW2) to OFF to return to normal startup mode.
9. Restart the server. The system should start up normally.
Chapter 6. Solving problems
125
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Table of Contents
Troubleshooting
