Lenovo M5400, M4400s, M4450S, M5400S these notebooks belong to the same series, they disassemble the fan replacement steps and fan specifications are the same, this article takes the Lenovo M5400 model as an example to introduce their disassemble method.

       Prepare related tools and items first: Phillips screwdriver, card, and new fan.

       1, first shut down the Lenovo M5400 laptop, and then remove the power, the notebook is flat on the desktop in reverse, with a Phillips screwdriver to remove the eight large screws in the external packaging, and a large screw on the cover, there is a fixed keyboard The two small screws can be removed.

       2, as shown above, in the lower left corner position is a wireless network card, unplug the two lines and unscrew the fixing screws can be removed; the right is the expansion slot of the SSD; the lower right of the fuselage is a hard drive, remove the fixing screws Can be removed; the middle of the fuselage is the optical drive screws, unscrew the entire drive can be unplugged, then remove the optical drive at the four round head screws and hard disk at the two round head screws, the following began to disassemble Keyboard and case.

       3, Lenovo M5400 notebook keyboard and front case are used to fix the buckle, so you need to use the card to open, the keyboard just remove the top of the buckle can be removed, pay attention to the keyboard and the motherboard connected to the keyboard cable, win When disconnecting the keyboard, disconnect the cables. The method for removing the cabinet is the same. Use a card to open the card. Then unplug the data cable connected to the motherboard and connect the data cable to the screen. Finally, remove the cabinet.

       4, remove the motherboard. Before you remove the motherboard, you must keep your hands dry to prevent water from sticking to the motherboard and affecting the normal operation of the motherboard. Remove the fixing screws to disassemble the motherboard. Pay attention to the data cables and data tapes inside. Do not pull them hard, otherwise they will be damaged.

       5. Remove the fan by unscrewing the fixing screws on the fan and the fixing screws on the heat-dissipating copper strip. Then remove the fan's cable to remove the fan. If you find that there is a lot of dust around the fan, you need to prepare some cleaning tools to clean it.

       6, install a new fan, the method is to follow the above steps, and finally start the test.

Lenovo M5400 Notebook Disassemble Note: When disassembling, pay attention to the size and position of the different screws, it is best to record and classify them, so that the assembly will not be confused.