LG FB162I Service Manual page 46

3. USB PART
TURN ON USB
YES
"Checking" or
"USB "Display
check
YES
Reading OK check
YES
OK
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Only for training and service purposes
NO
NO
Check the USB JACK POWER supply.
Check the USB DATA LINE.(P5301)
Check the IC501 (ES8380).
Check DATA LINE PIN 97(USB-No),
98(USB-Po)
5-7
Check the POWER supply circuit.
(Check P5701)
YES
Check the HRST#signal
YES
Check the USB PART
and DVD PART line.
(Check P5301)
YES
YES
LGE Internal Use Only