LG 49UF6700 - USB No Storage

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LGE Internal Use Only
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Only for training and service purposes
8. USB No storage
Check USB 5V DCDC IC IC405 output voltage : 5V
NG
Replace USB 5V DCDC IC IC405
OK
Check USB 5V OCP IC IC406 output voltage : 5V
NG
Replace USB 5V OCP IC IC406
Check USB device
OK
OK
Check USB signal R700, R701
NG
Replace R700, R701
NG
Replace USB Jack (JK700) or Main IC (IC101)
OK
Replace Main IC (IC101) or Main Board