LG KS20 - Page 111

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4. TROUBLE SHOOTING
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Start
Check the pin and battery
Connect terminals of I/O
connector
Connection OK?
Change I/O connector
Is the TA (or USB Cable)
voltage 4.8V (or 5.0V)?
Change TA
(or USB Cable)
Is it charging properly
After turning on U302, U300
END
NO
Yes
NO
Yes
NO
Yes
Check an U100 SMT status
by X-ray
Exchange U100 or
Change the Main board
And Retest
[ Charger Troubleshooting Flow ]