LG MICRO Hi-Fi SYSTEM - USB Part Troubleshooting

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3. USB PART
YES
Check the power supply circuit
(Check CN201)
NO
Check the HRST#signal
Check the HRST#signal
check the usb part and dvd part line
"Searching" or
"USB" display check
YES
YES
YES
Check the usb jack power supply
(Check CN201)
NO
Check the usb data line
(CN201)
Reading ok check
YES
YES
YES
Check the ES8391
check data line pin111(USB-No) 110(USB-Po)
TURN ON USB
OK