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4.13 Touch trouble<br />

Touch control signals are generated by APQ8064. Those signal’s path are :<br />

APQ8064 -> Touch Module<br />

LGE Internal Use Only<br />

Change the Touch module<br />

- 139 -<br />

START<br />

Check the touch connector<br />

&Bto B connector (CN6004)<br />

Reconnect the touch connector<br />

&Bto B connector (CN6004)<br />

Touch is OK?<br />

No<br />

Check VREG_L15_3.3V(TP1)<br />

& Touch_INT_N(TP2)<br />

&I2C_SDA(TP3)_SCL(TP4) output<br />

Output work well?<br />

No<br />

Change the main board<br />

Function is OK?<br />

4. TROUBLE SHOOTING<br />

Yes<br />

Yes<br />

Yes<br />

END<br />

END<br />

END<br />

Copyright © 2012 LG Electronics. Inc. All right reserved.<br />

Only for training and service purposes

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