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Replacing a system board
Notes
1. The BIOS and Vital Product Data (VPD) for the
computer you are servicing must be installed on
the new system board (FRU) after it is installed in
the computer. To do this, you must run the
Flash Update program using the Flash Update
diskette. See “BIOS levels” on page 151 “Vital
Product Data” on page 148, and “Flash
(BIOS/VPD) update procedure” on page 152.
2. Always ensure the latest level of BIOS is installed
on the computer. A down level BIOS may cause
false errors and unnecessary replacement of the
system board.
3. The processor is a separate FRU from the
system board and is not included with the system
board FRU. If you are instructed to replace the
system board, do the following&:
a. Remove the processor from the old system
board and install it on the new system
board.
b. Refer to “System board layout” on page 183
to find the system board rocker switch.
c. Set switch 1 to the on position.
d. Power-on the computer. The system
senses the change in the switch setting and
resets to the default processor speed (266
MHz).
e. Power-off the computer and set switch 1
back to the off position.
f. Power-on the computer
1) Select Advanced Setup from the
Setup Utility Menu.
2) Select Processor Speed Control from
the Advanced Setup menu.
3) Set the processor speed to match the
speed of the installed processor.
4. If the new system board does not correct the
problem, reinstall the old system board, then
replace the processor.
Security features
Security features in this section include:
Passwords
Vital Product Data
Management Information Format (MIF)
Alert on LAN
146 IBM PC 300/IntelliStation Vol 3 HMM