The ThinkPad T420 dismantle the machine to clean the ash and to change the silicone fat course

　　Recently considered for silicone grease clear ash, in the online search for a long time t420 dismantling machine tutorials, always find, had to grope for their own dismantling, fortunately, before the demolition of a lot of machines, generally know the general pattern of dismantling machine. Below I will be my disassembly of the step one by one.

First of all, let's take a look at this online shopping preparation tool: The more 7783 silicone grease (compared to the previous use of ICD7, the price is cheap and sufficient, better smear); T420 full set of screws (afraid of accidentally screwed up, bought prepared); a screwdriver, a tool for dismantling pieces.

Let us look at the demolition before the countenance, a little sense of righteousness Linghan, surrender to the feeling ...

All right, let's start dismantling. First of all, the battery is removed, the memory cover is removed, the hard drive is removed, and the optical drive is removed. Then, according to the picture, remove all the screws that can be seen above.

Here is all the screws, according to their corresponding d side of the position to stand.

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All right, flip over, open the screen, and remove the keyboard. First the keyboard to push up (the direction of the arrow), the bottom is loose, you can tear out.