7. Release the microprocessor retention latch by pressing down on the end,moving it to the side, and releasing it to the open (up) position.8. Open the microprocessor bracket frame by lifting up the tab on the top edge.Keep the bracket frame in the open position.Attention: Handle the microprocessor carefully. Dropping the microprocessorduring removal can damage the contacts. Also, contaminants on themicroprocessor contacts, such as oil from your skin, can cause connectionfailures between the contacts and the socket.MicroprocessorAlignmentmarksMicroprocessorbracket frameMicroprocessorrelease lever9. Remove the microprocessor:a. Carefully lift the microprocessor straight up and out of the socket, withouttouching the microprocessor contacts.b. Place the microprocessor on a static-protective surface10. If you are instructed to return the microprocessor, follow all packaginginstructions, and use any packaging materials for shipping that are supplied toyou.Installing the microprocessorThe following notes describe information that you must consider when you install amicroprocessor and heat sink:v If you have to replace a microprocessor, call for service.v Read the documentation that comes with the microprocessor, so that you candetermine whether you have to update the server firmware. To download thelatest level of server firmware and other code updates for your server, completethe following steps:1. Go to http://www.ibm.com/systems/support/.2. Under Product support, click System x.3. Under Popular links, click Software and device drivers.4. Click IBM System x3250 M3 to display the matrix of downloadable files forthe server.v The microprocessor speeds are automatically set for this server; therefore, youdo not have to set any microprocessor frequency-selection jumpers or switches.v If the thermal-grease protective cover (for example, a plastic cap or tape liner) isremoved from the heat sink, do not touch the thermal grease on the bottom ofthe heat sink or set down the heat sink. For more information about applying orworking with thermal grease, see “Thermal grease” on page 188.Note: Removing the heat sink from the microprocessor destroys the evendistribution of the thermal grease and requires replacing the thermal grease.186 IBM System x3250 M3 Types 4251, 4252, and 4261: Problem Determination and Service Guide
