Machine Maintenance Procedures 3-63Thermal Assembly Installation 0IMPORTANT:+ Apply approved thermal grease and make sure all heat pads are in placebefore replacing module .CAUTION:!Thermal grease can damage mainboard. Use caution when applying.The following thermal grease types are approved for use:PSX-D1. Remove all traces of thermal grease from CPU using a lint-free cloth or cotton swab andIsopropyl Alcohol, Acetone, or other approved cleaning agent.2. Apply small amount of thermal grease to center of CPU (A). (Figure 3-81)NOTE:NOTE:Force used during installation of thermal module is sufficient to spread grease overCPU top.Figure 3-81. Applying Grease to CPU3. Align thermal assembly and heatsink to mainboard screw holes. (Figure 3-80)NOTE:NOTE:Captive screws (C1 - C4) must be installed and secured in numerical order for thermalgrease to spread evenly.4. Install and secure captive screws (C1 - C4) to mainboard, in numerical order from one (1)to four (4).5. Install and secure captive screws (C5 - C7) to mainboard.6. Connect fan cable (B) to mainboard connector.7. Install mainboard.A