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11. Trouble shooting - USB connection error
Check USB 2.0 Cable
OK
Check USB device
If device is 2.5 inch HDD,
Check power adaptor
OK
Check USB jack
(JK1401)
OK
Check 5V voltage level at Bead or Jack
OK
Check IC1401 Pin4=high
OK
Maybe BCM3549(IC10)
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)
Copyright © 2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes
N
Replace Jack
N
Replace or rework L911 and IC1401 Pin1
N
Replace IC1401
LGE Internal Use Only
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