LG LG-E730 - Touch Trouble

4. TROUBLE SHOOTING
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Only for training and service purposes
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4.17 Touch trouble
Touch control signals are generated by AP20. Those signal’s path are : AP20 → Touch Module
Measurement
3.0V TOUCH (TP1)
1.8V TOUCH (TP2)
Touch is OK?
No
Check power
3.0V Touch(TP1)
1.8V Touch(TP2)
No
Yes
Work well?
START
No
Yes
Check the Touch connector and
reconnect the Touch connector
END
Change the Mani board
Change the Touck module
Yes
END