LG LG-P715 - Page 92

4. TROUBLE SHOOTING
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USB Initial sequence of LG-P715 is :
USB connected to LG-P715 -> +5.0V_USB go to 5V -> MSM8225 -> USB work
Connect new data cable to the P715.
Is it working?
Change USB data cable
Yes
Yes
Yes
Yes
END
Start
+5.0V_USB is
about to 5.0V ?
1. Check CN102 soldering.
2. change D106 or FL1
No
No
No
No
Is soldering of Common mode
lter & TVS Diode good?
Change common mode lter (FL101) or
TVS DIODE(D103,D104)
Is the USB Working correctly?\
Change the main board