50PZ570B-SB (CHASSIS:PB12A) - LG TV Service Manual (repair manual). Page 82

Read LG 50PZ570B-SB (CHASSIS:PB12A) Service Manual online

• 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)
Check USB 2.0 Cable
Y
Y
Check USB device
If device is 2.5 inch HDD,
Check power adaptor
Check 5V voltage level at
analog switch(IC1200, IC1201)
N
Replace one of
IC1200, IC1201 & Recheck
Y
Maybe BCM35230 (IC101)
has problems. Replace It.
14. USB Trouble Shooting
Page of 90
Display

Click on the first or last page to see other 50PZ570B-SB (CHASSIS:PB12A) service manuals if exist.