IBM x3950 Problem Determination And Service Manual page 157

The server model number will change when you install this upgrade. A new label
comes with the option kit for you to place over the existing label on the server.
The following table lists the kit server model numbers before and after the
dual-core upgrade is installed.
Table 4.
Model numbers before the dual-core
upgrade is installed
5Ax, 5Bx, 5Dx, 5Ex, 5Rx
6Ax, 6Bx, 6Dx, 6Ex, 6Rx
Removing and installing a microprocessor
To remove the microprocessor tray and a microprocessor, complete the following
steps:
Air baffle
1. Read the safety information that begins on page vii and "Installation guidelines"
on page 117.
2. Turn off the server and peripheral devices, and disconnect the power cords
and all external cables necessary to replace the device.
3. Remove the top cover and bezel (see "Top cover and bezel" on page 131).
4. Remove all fans (see "Hot-swap fan" on page 123).
5. Remove the memory cards (see "Removing and replacing a memory card" on
page 126).
Model numbers after the dual-core
upgrade is installed
Heat sink
Microprocessor
Chapter 4. Removing and replacing server components
ZZZ, PPP
333, QQQ
Microprocessor
baffle
VRM 4
141