IBM xSeries 346 Hardware Maintenance Manual And Troubleshooting Manual page 53

The following illustration shows how to install the second microprocessor on the
system board.
VRM
Attention:
v A startup (boot) processor must always be installed in socket J22 on the system
board.
v To ensure proper server operation when you install an additional microprocessor,
use microprocessors that have the same cache size and type, and the same
clock speed. Microprocessor internal and external clock frequencies must be
identical.
Complete the following steps to install an additional microprocessor:
1. Read the "Installation guidelines" on page 23.and the safety information
beginning on page 113.
2. Turn off the server and disconnect all power cords and external cables (see
"Turning off the server" on page 7); then, remove the server cover (see
"Removing the cover" on page 27).
3. Remove the air baffle (see "Removing the air baffle" on page 28).
4. Locate the second microprocessor socket (connector J23) on the system board.
5. Remove the microprocessor baffle.
a. Press the heat-sink release lever to unhook it from the tab on the
microprocessor socket; then, pull the lever up.
b. Slide the microprocessor baffle while lifting the rear flange out of the
heat-sink socket; then, lift it off the heat-sink socket and store it in a safe
place.
Microprocessor
baffle
Heat sink
Microprocessor
Microprocessor-
release lever
Chapter 4. Installing options
43