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.
Sobald er das hat, wird er in der Lage sein, eine Grafik zu seiner im Laufe der Zeit erlangten Reputation zu sehen.
Hier ist eine Vorschau, wie die Grafik aussehen wird:
Noch keine Reputation erlangt.