Read LG 50PH670S-ZD (CHASSIS:PD32A) Service Manual online
13. USB Trouble Shooting
Check USB 2.0 Cable
Y
Check USB device
If device is 2.5 inch HDD,
If device is 2.5 inch HDD,
Y
,
Check power adaptor
Check 5V voltage level at
analog switch(IC4304,
IC4305,IC4306)
analog switch(IC4304,
IC4305,IC4306)
N
Replace one of
switch(IC4304, IC4305,IC4306 &
Recheck
switch(IC4304, IC4305,IC4306 &
Recheck
Y
Maybe Main Chip (IC105)
has problems. Replace It.
has problems. Replace It.
• 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)
- In this case, remove the device and try to reboot the TV (AC power off/on)
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