Lg Electronics 50PT490B 用户手册
Copyright © 2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes
Only for training and service purposes
LGE Internal Use Only
14. 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)
Check USB 2.0 Cable
Y
Check P1102 (250/350 tool)
P1100 (230 tool)
N
Y
Y
Check USB device
If device is 2.5 inch HDD,
Check power adaptor
Replace Jack
Check 5V voltage level
IC1101 #2 (250/350 tool)
L1100 (230 tool)
N
Replace one of
IC1101,L1100 & Recheck
Y
MaybeMstar S7 (IC101)
has problems. Replace It.