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**aZimBahar** · 05-05-2011, 15:13

Nokia X3-02 Touch screen problem hardware solution
[IMG]http://2.bp.********.com/-2LkXVVXbuI4/TZrvB7VzONI/AAAAAAAABVc/48yjOQJOzR8/s400/gsmangel_x3-02+touch+screen+problem+solution.jpg[/IMG]

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.

05-05-2011, 15:13	#6 (permalink)
aZimBahar Product Manager Join Date: Dec 2009 Location: CEO.of.ROMDevelopers Age: 32 Posts: 16,005 Member: 1174508 Status: Offline Sonork: 100.1593820 Thanks Meter: 11,978	Nokia X3-02 Touch screen problem hardware solution [IMG]http://2.bp.********.com/-2LkXVVXbuI4/TZrvB7VzONI/AAAAAAAABVc/48yjOQJOzR8/s400/gsmangel_x3-02+touch+screen+problem+solution.jpg[/IMG] 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.