LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.2 USB trouble
USB Initial sequence of KF700 is :
USB connected to KF700
→
USB_VBUS(VA404) go to 5V
→
USB_D+(C434) go to 3.3V
→
USB_DATA is triggered
→
USB work
Содержание KF700
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