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4. TROUBLE SHOOTING
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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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ͽͶ͑ ͺΟΥΖΣΟΒΝ͑ ΆΤΖ͑ ΟΝΪ͑
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4.11 USB Trouble shooting
The sequence of LGV909DW USB is,
USB connected to LGV909DW
Æ
USB_OUT_5V(C1208) goes to 5V
Æ
USB_D+ go to 3.3V
Æ
USB_DATA is
triggered
Æ
USB work. Block Diagram of USB & UART connection is shown below
USB device mode Trouble shooting diagram
͑
ͽͶ͑ ͺΟΥΖΣΟΒΝ͑ ΆΤΖ͑ ΟΝΪ͑
͑
4.11 USB Trouble shooting
The sequence of LGV909DW USB is,
USB connected to LGV909DW
Æ
USB_OUT_5V(C1208) goes to 5V
Æ
USB_D+ go to 3.3V
Æ
USB_DATA is
triggered
Æ
USB work. Block Diagram of USB & UART connection is shown below
USB device mode Trouble shooting diagram