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    • A:

      確認話筒燈是否點亮,按下話筒鍵后喊話,觀察功放輸出光條是否有變化,無變化先確認音頻線是否連接正確。

    • A:

      首先排除電源充電功能故障,若充電正常則顯示燈損壞。

    • A:

      檢查內部是否有異物,測量自檢端子與24V負之間的電壓,確認電壓是否正常。

    99彩票
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