Lenovo ThinkServer RD550 - Manual (Page 126)

Notes:
• Ensure that the new microprocessor is the correct type your server supports. See “Memory module
installation rules” on page 68. When two microprocessors are installed, both must have the same core
voltage and core speed.
• Use any documentation that comes with the microprocessor option kit and follow those instructions in
addition to the instructions in this topic.
• Your microprocessor, socket, and socket cover might look slightly different from the illustrations in this
topic.
To replace the microprocessor, do the following:
1. Remove all media from the drives and turn off all attached devices and the server. Then, disconnect all
power cords from electrical outlets and disconnect all cables that are connected to the server.
2. Prepare your server. See “Removing or extending the server from the rack cabinet” on page 63.
3. Remove the server cover. See “Removing the server cover” on page 63.
4. Remove the cooling shroud. See “Removing and reinstalling the cooling shroud” on page 66.
5. Remove the heat sink. See “Installing or replacing a heat sink” on page 104.
6. Locate the microprocessor socket. Open the small handle 1 first by gently pressing down the handle a
little bit and then pushing the handle inward to release it from the secured position. Then, open the
other small handle
2 in the same way.
Note: There are two marks on the microprocessor retainer. Open the small handle marked with
first and then open the other small handle marked with . Always follow the correct sequence when
you open the small handles.
Figure 81. Opening the handles
112 ThinkServer RD550 User Guide and Hardware Maintenance Manual