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4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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