LG D686 - Phone Software Update; Updating Firmware via Internet

3. TROUBLE SHOOTING
- 102 -
Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.11 Touch Sensor
START
Reconnect Touch Module CN406
Change Main Board
Check Power
+1V8_VIO_MTKTP1) / +3V0_TOUCH_MTK (TP2)
Power is OK?
Touch Woks OK ?
Yes
Yes
Yes
Yes
Check I2C Line & Signal Line (TP3 &TP4)
Touch Works OK?
Change Touch Module
Touch Works OK?
No
No
No
No
END
Change MT6329(U804)