LG KE800 Service Manual page 56

START
Check the Vbat voltage.(3.35V ~ 4.0V)
Turn on the mobile.
Is MAIN FPCB connected
properly?
Yes
Is TOUCH PCB connected
properly?
Yes
Check "TOUCH_EN" signal.
Change to High?
Yes
Check voltage at FB704.
About 3.3V ?
Yes
Check "TOUCH_INT"
Signal. Change to Low when
user press the button?
Yes
Charge will be operating properly
No
Connect FPCB properly
No
Connect TOUCH PCB properly
No
Replace Main Board
No
Replace U706.
No
Replace TOUCH PCB
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4. Trouble Shooting