these parts are used in usb charging and data mas storage functioning.so if your nokia x3 show errors in charging with usb or mass storage you can re hot or resold these parts that are shown in the diagram encircled in red lines.you may have to change these components if nokia x3 usb charging prob n
If Nokia X3 keypad light is working but lcd light is not working this problem can be solved with a few jumpers that you can find in bellow diagram.So in first step check lcd jack and lcd. if lcd jack is fine and there is no damages or rust on it you can check with new lcd. If new lcd shows same
this is image is to solve low single problem in nokia x3.the components that are shown in diagram with red line in circled re sold them. if not solved you have to change these parts and the low signal problem will be solved by changing duplexes.
if you have a mic problem in nokia X3 it is the best diagram to show you that where is the problem. you have to clean and check these parts shown in the diagram bellow and leave it for a few seconds so that it can be dry. if problem do not solve change these parts carefully.problem will be solve
if nokia x3 keypad is not working all key or a few are missing or typing two characters when ever you press a single one. Step1:-see the ic that is show in the diagram simply wash the ic and its near area if any rust is here or it is water damaged.leave it for a few mints so that it can dry. S