LG 50PG30 Service Manual page 41

USB Trouble Shooting
¥ Exception
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
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Only for training and service purposes
TROUBLE SHOOTING GUIDE
Check USB 2.0 Cable
Y
Check USB Device
If device is 2.5 inch HDD,
Do not connect, only upgrade
Y
Check JK804
Y
Check L801 voltage level 5V
Y
Maybe Mstar has problems
N
Replace it
N
Replace it
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LGE Internal Use Only