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NOTICE: Do not touch the processor die. Press and hold the processor down on the substrate on which the die is mounted while turning the cam screw to prevent intermittent contact between the cam screw and processor. NOTICE: To avoid damage to the processor, hold the screwdriver so that it is perpendicular to the processor when turning the cam screw. NOTICE: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer. NOTICE: To ensure maximum cooling for the processor, do not touch the heat transfer areas on the processor thermal-cooling assembly. The oils in your skin reduce the heat transfer capability of the thermal pads. NOTICE: When removing the processor module, pull the module straight up. Be careful not to bend the pins on the processor module. 1 ZIF-socket cam screw 2 pin-1 corner of microprocessor 3 ZIF-socket NOTE: The ZIF-socket cam screw secures the processor to the system board. Take note of the arrow on the ZIF-socket cam screw, which indicates the direction to turn the cam screw. Replacing the Processor Module 1. Align the pin-1 corner of the processor module with the pin-1 corner of the ZIF socket, and insert the processor module. When the processor module is correctly seated, all four corners are aligned at the same height. If one or more corners of the module are higher than the others, the module is not seated correctly. 2. Tighten the ZIF socket by turning the cam screw clockwise to secure the processor module to the system board. 3. Replace the processor thermal-cooling assembly (see Replacing the Processor Thermal-Cooling Assembly). 4. Replace in reverse order the components that you removed in Removing the Processor Module, beginning with step 5. Back to Contents Page NOTICE: Ensure that the cam lock is in the fully open position before seating the processor module. Seating the processor module properly in the ZIF socket does not require force. NOTICE: A processor module that is not properly seated can result in an intermittent connection or permanent damage to the processor and ZIF socket. NOTE: The pin-1 corner of the processor module has a triangle that aligns with the triangle on the pin-1 corner of the ZIF socket. NOTICE: You must position the processor module correctly in the ZIF socket to avoid permanent damage to the module and the socket. NOTE: When you replace the processor thermal-cooling assembly, be sure to place a new thermal pad on the part of the thermal-cooling assembly that covers the processor. Place the new thermal pad on the thermal-cooling assembly such that the pad fits between the assembly and the processor. You can place the new thermal pad directly on any existing thermal pad already installed on the thermal-cooling assembly. It is not necessary to remove an existing pad or to clean the surface. NOTE: When replacing the processor thermal-cooling assembly, hold up the mylar flap on the assembly so that the flap rests on top of the fan when the processor thermal-cooling assembly is in place. Back to Contents Page Processor Thermal-Cooling Assembly Dell™ Inspiron™ 9400 Service Manual Removing the Processor Thermal-Cooling Assembly Replacing the Processor Thermal-Cooling Assembly Removing the Processor Thermal-Cooling Assembly 1. Follow the instructions in Before Working Inside Your Computer. 2. Remove the hinge cover (see Removing the Hinge Cover). 3. Remove the keyboard (see Keyboard). 4. Remove the display assembly (see Removing the Display Assembly). 5. Remove the palm rest (see Removing the Palm Rest). 6. Loosen in consecutive order the four captive screws, labeled "1" through "4," that secure the processor thermal-cooling assembly to the system board. 7. Lift the processor thermal-cooling assembly and remove it from the system board. Replacing the Processor Thermal-Cooling Assembly 1. Place a new thermal pad on the underside of the thermal-cooling assembly (the part of the thermal- cooling assembly that will cover the new processor): a. Remove the backing from the new thermal pad, taking care not to tear the pad. b. Place the pad's adhesive-side against the part of the thermal-cooling assembly that will cover the new processor, and press it into place. CAUTION: Before you begin the following procedure, see the safety instructions in the Product Information Guide. NOTICE: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as the back panel) on the computer. NOTICE: To help prevent damage to the system board, remove the main battery (see Before Working Inside Your Computer) before working inside the computer. 1 processor thermal-cooling assembly 2 captive screws (4) NOTE: If you are replacing the thermal-cooling assembly without removing and replacing a new processor, you can place the new thermal pad directly on any existing thermal pad already installed on the thermal-cooling assem...