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| Problem | Cause | Measure |
| No sound heard | The device contains no MP3/ | Record MP3/WMA/AAC files properly to the device. | |
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| WMA/AAC files. |
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| The files are not proper MP3/ | Use only properly encoded MP3/WMA/AAC files. |
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| WMA/AAC format. |
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| Connectors are loose. | Disconnect the device and reconnect securely. |
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| Sound is | The MP3/WMA/AAC files are | Use only properly encoded MP3/WMA/AAC files. |
| USB/MTP/iPod | interrupted or has | improperly encoded. | Disconnect the device and reconnect. |
| noise. | According to the state of | ||
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| The device isn’t | The device is damaged. | Disconnect the device and reconnect. If the device is |
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| recognized. |
| still not recognized, try replacing with a different |
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| Connectors are loose. | ||
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| device. | |
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| operation on the device, the |
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| communication fault is |
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| caused. |
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| Can’t insert the | The device has been inserted | Try reversing the connection direction of the device |
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| device. | improperly. | (usually the brand name surface should be facing |
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| left). |
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| The connector is broken. | Replace with a new device. |
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40 DXZ388RUSB/DXZ389RUSB/DXZ389RGUSB
