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為什么沒有信號輸入?

答:可能是沒有選擇相應的信號按鈕,如臺式電腦、手提電腦、影碟機、展臺等按鈕。如果已經選擇了相應的按鈕還是沒有信號輸入,則要按“視頻信號”或“電腦信號”來切換信號。

此文關鍵詞:為什么沒有信號輸入?

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