LG SN4A - Usb Function

3-25
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ELECTRICAL TROUBLESHOOTING GUIDE
USB PART
Refer to Power Part Troubleshooting
Check JK201 1pin Voltage 5.1 V
YES
Check R379 Voltage 5.1 V
Check IC306
Check JK201 2pin(D-), 3pin(D+)
Replace the Related part.
YES
NO
Check Reading OK
OK
YES YES
NO
NO
OK
3. USB FUNCTION