User`s guide

User Guide
194
www.bull.com
Upgrading Microprocessor
Your system is fitted with a processor installed in a socket LGA 775.
Removing a Processor
1. Make sure the power switches for the computer, video monitor and any
peripheral devices are turned OFF and unplug the power cord (see “General
Safety Information” on page 132).
2. Disconnect the monitor and peripheral devices (printers, for instance) from the
system.
3. Remove the server cover. Refer to “Removing the Server Cover” on page 160.
4. Disconnect the fan cable(s) from the processor fan connector(s) on the
motherboard.
5. Remove the processor heatsink:
a. Remove the four screws fastening the heatsink to the motherboard.
b. Remove the heatsink manually using a gentle rocking motion.
6. Open the processor socket:
- Use your right thumb to push down and outwards the lever in order to dis-
engage it from the retention tab.
Caution
If you do not follow scrupulously these instructions, the lever
can bounce back and cause bend contacts.
- Rotate the load lever to its fully open position at approximately 100°.
Figure 138: Opening the processor socket
7. Grasp the processor (use your index to hold the load plate side, and your thumb
to hold the lever side).
8. Lift the processor straight and away.
9. Set the processor immediately in its protective cover.
- Hold the CPU by three of its corners.
- The chamber of the protective cover should match the connection 1 on the
CPU.