LG LG-P970 - Touch Trouble

4. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
Touch is OK?
No
Check power
3.0V TOUCH (TP1)
1.8V TOUCH (TP2)
No
Yes
Work well?
START
END
No
Yes
Check the touck connector and
reconnect the touck connector
Change the main board
Change the touch module
Yes
END
4.22 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)