3. Use the cleaning pad to wipe the thermal grease from the bottom of the heatsink.Note: Make sure that all of the thermal grease is removed.4. Use a clean area of the cleaning pad to wipe the thermal grease from themicroprocessor; then, dispose of the cleaning pad after all of the thermal greaseis removed.5. Use the thermal-grease syringe to place 9 uniformly spaced dots of 0.02 mLeach on the top of the microprocessor. The outermost dots must be withinapproximately 5 mm of the edge of the microprocessor; this is to ensureuniform distribution of the grease.Note: If the grease is properly applied, approximately half of the grease willremain in the syringe.6. Install the heat sink onto the microprocessor as described in “Installing anadditional microprocessor and heat sink” on page 50.Removing the system boardNote:1. Before you replace the system board, make sure that you backup any featureson demand (FoD) keys that were enabled. Remember to re-enable the featureson demand (FoD) keys after installing the new system board. For moreinformation on Features on Demand (FoD), including instructions forautomating the activation and installation of the activation key by using IBMToolsCenter or IBM Systems Director, see the IBM Features on Demand User'sGuide at https://www-304.ibm.com/systems/x/fod/index.wss under the Helpsection.2. When you replace the system board, you must either update the server withthe latest firmware or restore the pre-existing firmware from a diskette or CDimage. Make sure that you have the latest firmware or a copy of thepre-existing firmware before you proceed.Before you remove the system board from the server, take the following steps tosave data, firmware, and configuration data:v Record all system configuration information, such as IMM IP addresses, vitalproduct data, and the machine type, model number, serial number, UniversallyUnique Identifier, and asset tag of the server.354 System x3530 M4 Type 7160: Installation and Service Guide
