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Heres a solution that shows  nokia X3 camera, volume up and volume down button switch connection line paths, that can be used to fix and and repair a non-responsive switch.

If encountered this problem you may need to check the non-responsive  button switch first if it still working or not. Then replace if already found faulty damaged. Ensure that the switch terminal solder pads on the PCB is not lifted or disconnected.

If ever the button switch is okay but still it doesnt show responding, you may then refer to the solution below for further line paths tracing procedure.


Check the line paths of Nokia X3 Camera, Volume Up and Volume Down terminal line paths where it is being connected to certain numeric keys, in these procedure you can determine which and where certain spots you can apply a jumper wire when needed or when the button switch terminal solder pads is already lifted or damaged.