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Replacing the fan.
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Use a Phillips #0 screwdriver to remove the twenty screws on the underside of the T42.
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Remove the four Phillips screws located on either side of the rear of the T42 (there are two on each end.)
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Flip the laptop over and open the screen to access the keyboard and trackpad.
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Carefully maneuver the palm rest away from the keyboard, as both the keyboard and palm rest/trackpad will come off together.
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Starting from the bottom right, carefully remove off the bezel. Use a spudger or flat head screwdriver if needed.
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Grasp the metal bracket to remove it from the device.
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Remove the rubber cover from the microphone.
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Unscrew the 3 screws on the copper heatsink.
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Now, unplug the connection to the motherboard..
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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How about you just down the freely available Hardware Maintenance Manual (HMM) for the laptop. They are downloadable in PDF format, and very well done.
It doesnt take this much, if you remove the palm rest and keyboard you can get it at an angle it slides straight out.