Only For Training And Service Purposes - LG U370 Service Manual

Check the +5V_PWR Pin of I/O
Connector and Battery contact
U304
R315
Copyright © 2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Start
terminals
Connection is OK ?
YES
Check TA ( or USB Cable )
Voltage ( 5.1V )
YES
Is it charging properly after
turnning on U304
NO
Change the Main board
[ Charger Troubleshooting Flow ]
[ Charging part ( Main PCB) ]
4. TROUBLE SHOOTING
NO
Change I/O Connector
NO
Change TA ( or USB
Cable )
YES
END
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LGE Internal Use Only