1, Make sure the laptop is turned off before you start dismantling it. Unplug AC adapter. Unlock and remove toshiba satellite l755 laptop battery. Unscrew five screws securing the hard drive cover and memory cover. Lift up covers and remove them from the laptop.
2, Remove one screw located in the battery compartment. This screw securing the keyboard bezel. Turn the laptop over and carefully lift up the keyboard bezel with a small screwdriver.Continue removing the bezel with your fingers. You'll have to wiggle it a little bit in order to separate from the laptop.Remove four screws securing the toshiba satellite l755 keyboard.
3, After all four screws removed you should be able to lift up the top side of the keyboard and turn it upside down. Place the keyboard on the palmrest. Be careful, the keyboard still connected to the motherboard.It's necessary to unlock the connector and release the cable before removing the keyboard. In the following two steps I explain how to unlock the connector.Remove the keyboard.
4, Remove shown screws from the bottom of the laptop. Remove three screws securing the motherboard and cooling fan assembly. On the bottom side of the motherboard you can access the toshiba satellite l755 cpu cooling fan assembly and CMOS battery (on the left side from the wireless card). In order to remove the cooling fan assembly (fan and heatsink) you'll have to loosen four screws and disconnect the fan cable. After that carefully lift up the assembly and separate it from the processor.
5, Reverse the produce to install Toshiba Satellite L755 CPU Cooling Fan
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