Nokia X3-02 hardware solution here .
 

Nokia X3-02 Volume Control and Lock Button Switch Jumper Ways Solution

Nokia X3-02 Camera Problem Solution
 

Nokia X3-02 Camera Problem Solution
Note: you may first check, restore or flash update the device firmware before proceeding to hardware troubleshooting. If the firmware calibration already done but it didn't fix the problem, refer to the solution below and do have a check procedures on some components.

Nokia X3-02 USB Device Not Detected Solution w/ Jumper Ways Track
 

Here's the solution that shows the connection line paths of the USB pin connector down to a certain components on Nokia X3-02 PCB board, that may need to check to solve USB connection problem.



Hints in hardware troubleshooting Nokia X3-02 USB device not detected problem:
1. Check/clean the USB pin connector. Re-solder the pins.
2. Check/ replace the fuse, diode and filter coils.
3. Trace each of the VBUS, D-,D+, ID and Ground pinout connection line paths. Mend to reconnect it if found cut-off or open circuit.
4. Rework, replace the USB Transceiver chip.

Enjoy!!!

Nokia X3-02 Earpiece Speaker Solution
 

Another hardware solution for Nokia X3-02 holds for not working earpiece speaker problem. This solution may help if after confirmed that the speaker is working well or already tried replacing it, but still there is no voice sound can be heard during a call conversation.

The solution below shows the components where the audio data signals of the earpiece speaker feeds. Just locate it on the Nokia X3-02 PCB board and do some check and test procedures.

Nokia X3-02 Buzzer, Hands Free Speaker Jumper Ways Solution
 

This is another Nokia X3-02 solution for not working buzzer, ringer or hands free loud speaker problem. This solution may help if the problem does not lies on the IHF speaker or already tried replacing it, but still there is no tones or media sounds can be heard on the phone.

This solution provide and point out which components needs for check up if the speaker has no audio sound output. Just refer to it and locate the highlighted components.

If the speaker is already been confirmed okay, you may then check all of the filter coils in the circuit.
Check or read the battery supply voltage (VBAT) on the 0 ohms resistor and inductor coil, this voltage supplies the IHF amflier IC to work. If the voltage is missing, check or replace the inductor coil and resistor.
If the supply voltage reading is okay, you may then try to rework the IHF amplifier IC, replace if necessary.

Hints on troubleshooting touch screen failure on Nokia X3-02:
This will work if you already tried replacing the touch screen module and restoring the device firmware.
1.Check/clean the touch screen pin connector, re-solder it if necessary.
2. Check/read the touch screen supply voltage (VIO 1.8V) across to the filter coil.
If the voltage is missing check/replace the 0 ohms resistor, or apply a jumper if the line paths is open or cut.
3. Trace the RESET and PINT DAV line paths. apply a jumper if connection is open or cut.
4. Rework, re-ball or replace the Touch Controller chip.

Hints to fix Nokia X3-02 not charging problem:
1. Check the charging pin connector, clean it, including the terminal pads on the PCB board. Replace the charging pin connector if already damaged.
2. Check also the battery terminal connectors, clean it if necessary.
3. Get your multimeter then check the fuse, coil, doide and capacitors for possible shorted and open circuit. Replace if found damaged.
3. Trace and check the Charge IN voltage line paths from the pin connector down to the capacitor near the PEARL IC.

If the above procedures doesn't work and fix the problem, the possible faulty id the PEARL IC, reworking it might only help fix the not charging problem on your Nokia X3-02 repair.

This highlighted component is a thermal resistor, which has a rated value of 47K.
This resistor holds as battery temperature sensor of the phone, if the said resistor is faulty or damaged it will result to a Charger Not Supported on Nokia X3-02 touch and type phone.

Hints in troubleshooting keypad LED light failure problem:
1. Check the keypad matrix flex assembly, clean it if oxidized. replace the whole flex board if severely damaged.
2. Check each of the white LED light bulbs using a multimeter set to X1.
3. Check and trace the positive (LED+) and negative (LED-) supply voltage.
3. The negative supply(LED-) of the keypad LED is feed from the PEARLJ IC.
4. The components such as the transistors, inductor coil and diode will only be check if also the Display backlight LED failed or show a dark screen

Nokia X3-02 Insert Sim Card Problem Jumper Ways Solution
 

Nokia X3-02 Power On-OFF Key Jumper Ways Solution
 

Here's the Nokia X3-02 solution for not working Power/End key problem. This solution may help fix if the phone shows charging indication or charging icon when the battery charger is plug-in but failed or unable to turn it ON.

In Nokia X3-02 the power ON-OFF key aside from it is on the keypad flex matrix it is also connected to the keypad filter IC. The solution below shows the connection line paths of the power key, this is useful without changing the filter IC and this can be used by bypassing the power key connection from the filter IC.

Just refer to given solution below and trace the said power key line paths.



Just manage to apply a jumper wire on a spots where the said Nokia X3-02 power key connection. This may help without compromising to change the filter IC and or the keypad flex matrix.