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Only for training and service purposes
4. TROUBLE SHOOTING
Start
Check the pin and battery
Connect terminals of I/O
connector
Connection OK?
Change I/O connector
Is the TP1 voltage 4.8V (or
5.0V)?
Change TA
(or u-USB Cable)
Is it charging properly
After turning on Q1
END
NO
Yes
NO
Yes
NO
Yes
[ Charger Troubleshooting Flow ]
Check PMIC(U33) SMT status
by X-ray
Exchange U33 or
Change the Main board
And Retest
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