The battery cover of my mx3 had 9 screws visibles. The last 2, the top and bottom middle screws, were hidden under a layer of paint and didn't look like screws. Just push the screw driver in and break the paint layer. I would guess that this is the equivalent of a warranty seal, so if your phone is still under warranty think carefully before you do them.
Just realised that if you remove ONLY those 2 screws it is an easier operation as you change the motor of the fan only.
I might have lost my subwoofer by removing the full casing of the fan.
If you buy a full fan unit, then you do not need to remove those:
"Two Phillips screws on the top left and bottom left of the fan."
That would open the fan unit itself, when you need to install the whole fan unit as a block.
Quando isso acontecer, você poderá ver um gráfico da reputação que ele adquiriu ao longo do tempo.
Aqui está uma prévia de como será o gráfico:
Nenhuma reputação adquirida ainda.