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Trouble Shooting
  
ET300 USB version
Please refer to ET300 Operating Notes before trouble shooting. If your technical problems have not been addressed by here, feel free to email us at support@mp3ok.com to ask any other technical questions regarding ET300. We will post the answer to your question in the following list, and email the answer to you as well, thanks.
 

Installation
Q1. Unable to install the Installation software?

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Download
Q1. Why I can't turn off the Player during connecting with PC?
Q2. Download to Internal memory failure?
Q3. Download to External memory card failure?
Q4. Why the ET300 Manager window didn't show-up sometimes?

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Playback
Q1. Why files can not be transferred or played back on the unit?
Q2. Why the LCD always display 48 KBPS?
Q3. Why distortion come out during playback?
Q4. Playback quality is bad?
Q5. The buttons are not functioning?
Q6. Hear nothing after press Play button?
Q7. LCD is blank but earphone output well?
Q8. The file on the SmartMedia Card is not being recognized

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