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Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Disconnect the processor fan cable from the system board connector (see System Board Components). 4. Carefully move away any cables that are routed over the processor fan and heat sink assembly. 5. Depending on the processor fan and heat sink assembly installed in your computer, perform the following steps: Type 1 a. Align the tip of a flat-blade screwdriver with the fastener grooves and rotate the four fasteners in anticlockwise direction to unlock them. b. Lift the processor fan and heat sink assembly out of the computer. WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at WARNING: To guard against likelihood of electric shock, laceration by moving fan blades or other unexpected injuries, always unplug your computer from the electrical outlet before removing the cover. WARNING: Do not operate your equipment with any cover(s) (including computer covers, bezels, filler brackets, front-panel inserts, etc.) removed. CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell™ is not covered by your warranty. CAUTION: The processor fan with the heat sink is one single unit. Do not try to remove the fan separately. CAUTION: Do not touch the fan blades when you are removing the processor fan and heat sink assembly. This could damage the fan. CAUTION: Despite having a plastic shield, the processor fan and heat sink assembly may be very hot during normal operation. Be sure that it has had sufficient time to cool before you touch it. Type 2 a. Loosen the four captive screws that secure the processor fan and heat sink assembly to the system board. b. Lift the processor fan and heat sink assembly out of the computer. Replacing the Processor Fan and Heat Sink Assembly 1. Follow the procedures in Before You Begin. 2. Clean the thermal grease from the bottom of the processor fan and heat sink assembly. 3. Apply the new thermal grease to the top of the processor. 4. Replace the processor fan and heat sink assembly: Type 1 a. If required, rotate the fasteners on the processor fan and heat sink assembly clockwise to ensure that they are in the lock position. b. Align and press the four fasteners on the processor fan and heat sink assembly into the screw holes on the system board. Type 2 a. Align the four captive screws on the processor fan and heat sink assembly with the screw holes on the system board. b. Tighten the four captive screws that secure the processor fan and heat sink assembly to the system board. 5. Connect the processor fan cable to the system board connector (see System Board Components). 6. Replace the computer cover (see Replacing the Computer Cover). 7. Connect your computer and devices to electrical outlets, and turn them on. 1 processor fan cable 2 fastener grooves (4) 3 fasteners (4) 4 processor fan and heat sink assembly 1 processor fan cable 2 captive screws (4) 3 processor fan and heat sink assembly CAUTION: When reinstalling the fan, ensure that you do not pinch the wires that run between the system board and the fan. CAUTION: Ensure that you apply new thermal grease. New thermal grease is critical for ensuring adequate thermal bonding, which is a requirement for optimal processor operation. NOTE: Ensure that the processor fan and heat sink assembly is correctly seated and secure. Removing the Chassis Fan 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Disconnect the chassis fan cable from the system board connector (see System Board Components). 4. Remove the four screws that secure the chassis fan to the chassis. 5. Slide the chassis fan towards the front of the computer and lift it out. Replacing the Chassis Fan 1. Follow the procedures in Before You Begin. 2. Slide the chassis fan in place towards the back of the computer. 3. Replace the four screws that secure the chassis fan to the chassis. 4. Connect the chassis fan cable to the system board connector (see System Board Components). 5. Replace the computer cover (see Replacing the Computer Cover). 6. Connect your computer and devices to electrical outlets, and turn them on. Back to Contents Page CAUTION: Do not touch the fan blades when you are removing the chassis fan. This could damage the fan. 1 screws (4) 2 chassis fan Back to Contents Page Front I/O Panel Dell™ Inspiron™ 580 Service Manual Removing the Front I/O Panel Replacing the Front I/O Panel Removing the Front I/O Panel 1. Follow the procedures in Before You Begin. 2. Remove the computer cover (see Removing the Computer Cover). 3. Remove the front bezel (see Removing the Front Bezel). 4. Disconnect all the cables that are connected to the front I/O p...