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COBY MPC-841 

IMPORTANT PLEASE READ!

  

COMMON TROUBLESHOOTING ISSUES 

 

ISSUE #1 WHAT DOES “FILE OPEN ERROR” MEAN 

This error message indicates that the file is DRM (Digital Rights Management) 

protected and it cannot be read or the file is an incorrect file. 

 

ISSUE # 2 WHY DOES MY MP3 PLAYER READ “NO FILE”

 

If your MP3 player reads no file after you have transferred files into the unit 

then it simply means you have transferred an invalid file format into the unit. 
Make sure the file is an MP3 or WMA file. 

 

ISSUE # 3 WHY DOES MY MP3 PLAYER READ “SYSTEM ERROR” 

If your MP3 player reads system error, it means the firmware is corrupted. You 
will need to reset the firmware on the unit.  
 

1)

 

Remove the battery from the Player 

2)

 

Turn the “ HOLD ” button to the “ 

ON

 ” position. 

3)

 

Insert the battery and close the cover 

4)

 

Simultaneously press the “ MENU/OFF ” & “ PLAY/PAUSE ” button. 

5)

 

The MP3 should display “ FORMATTING ”. Once the unit is done 

formatting, you should see black squares.  

6)

 

Continue with Issue # 10 (see below). 

 
 

ISSUE #4 WHY DO I RECEIVE AN “OUT OF MEMORY” ERROR 
MESSAGE WHEN ADDING SONGS TO MY MP3 PLAYER 

This error message indicates that the MP3 player memory is full. To add new 
songs to the MP3 player, you will need to create space by deleting existing files. 

 

 

ISSUE #5 HOW DO I TRANSFER MY MP3 FILES INTO THE MP3 
PLAYER 

Connect the MP3 player to the USB port of your computer. Copy and Paste or 
Drag and Drop your MP3 files from your source folder into the MP3 player 
(removable drive). You cannot directly download an MP3 file from a website into 
the MP3 player. The files need to be saved on your computer first. 

 

ISSUE # 6 WHY DOES MY MP3 PLAYER SHOWS BLACK SQUARES 

 

If your MP3 player shows the black squares then it means the firmware is 

corrupted. The firmware needs to be reset/upgraded. See issue# 10. 

 

ISSUE # 7 WHY DOES MY MP3 PLAYER FREEZES IN PLAY MODE

 

If your MP3 player freezes in play mode, it means you are using a WMA file with DRM (Digital 
Rights Management). The WMA file is a protected file and cannot be played on the MP3 player. 
 

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