START
Enter USB mode
Insert the wire
Can’t find the
USB device
Check the USB Signal Wire are
Fully Insert
1: Change the USB Sub board.
2: Change the main Board
Check the USB device are Fully
Insert
Reinsert the device
no
yes
E
N
D
N
O
USB Repair Flowchart
Insert USB device
Check the USB device is normal
Change the USB device
yes
yes
no
no
yes
Содержание LED1973W
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Страница 11: ...IR BOARD SCHEMATICS TV DVD KEY BOARD SCHEMATICS ...
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Страница 24: ...Check the power supply wire and LED black light cable are fully insert Insert the wire again and well ...
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