Nokia X3-02 speaker not working can caused by damaged coil and resistor on the speaker circuit, and also the speaker itself. When you find the speaker problem on your Nokia X3-02, the first step you have to do is check the speaker by using the Ohm meter, if the speaker condition is good, you can check the path with the aid of Nokia X3-02 schematic diagram.
If all the path is well connected, the next step is check the L2100. The next process as shown by the picture help below.
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