LG LG-E960 - Touch Trouble

4. TROUBLE SHOOTING
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Only for training and service purposes
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4.13 Touch trouble
Touch control signals are generated by APQ8064. Those signal’s path are :
APQ8064 -> Touch Module
Check the touch connector
&Bto B connector (CN6004)
Yes
Yes
Yes
No
No
START
Function is OK?
Reconnect the touch connector
&Bto B connector (CN6004)
Touch is OK?
Check VREG_L15_3.3V(TP1)
& Touch_INT_N(TP2)
&I2C_SDA(TP3)_SCL(TP4) output
Output work well?
END
END
END
Change the Touch module
Change the main board