Touch Trouble - LG -P990 Service Manual

4.23 Touch trouble

Touch control signals are generated by AP0. Those signal's path are : AP0 -> Touch Module
START
Check the touck connector and
reconnect the touck connector
Touch is OK?
No
Check power
VCC_TOUCH_3V1(TP1)
VCC_TOUCH_1V8(TP)
Yes
Work well?
Yes
END
Measurement
VCC_TOUCH_3V1(TP1)
VCC_TOUCH_1V8(TP)
LGE Internal Use Only
Yes
END
No
Change the main board
No
Change the touch module
- 15 -
4. TROUBLE SHOOTING
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes