How to Change the SD Reader (Epsilon Series)

In this Article you Will Learn how to Change the SD Reader






Allen Key 2.5mm
Socket driver 5.5mm 


If you spot that the information of the file that you will print is not correct, it's bugged or the system asks you to insert an SD card even though you have one plugged in, you are experiencing SD reading issues. You will need to change the SD reader. follow the next steps to do it:


Note: Before changing the SD reader, make sure the SD card itself is not causing this to happen. Check if the card is unlocked and try to use another SD card to see this gets it fixed.


1. Raise the printing surface. To do it,  go to Options/Maintenance/Move printing surface.



2. Turn off and disconnect the BCN3D Epsilon from its power supply.

bcn3d-epsilon-turn-off-1 bcn3d-epsilon-turn-off-2


3. Remove the bottom parts of the Z cable cover. Follow the next article to know how to do this process: How to remove the Z cable cover (Epsilon Series)



4. Unscrew the inner cover and lift it to get access to the SD Reader. Check this article to find more information about this process: How to remove the inner cover (Epsilon Series).


5. Disconnect the SD reader cable. Pay attention on the cable connector orientation.



6. Remove the two nuts that hold the SD reader to the frame of the printer. nut-iconx2 M3


7. Once the SD reader is out, loosen the screws which hold the SD reader to the metal support. screw-iconx3 M3 8mm


sd-reader-top sd-reader-bottom
Top view Bottom view


8. Place the new SD reader on the metal support and install it in the printer. You can do it by following the previous steps in reverse order.



Usually, the reading problems are caused by the SD card and in fewer cases by the SD card reader, if you are using a micro SD card adapter, check if it is okay and try to change it before changing the SD reader.

Is important that the SD card is formatted in FAT32 to ensure a correct reading process. 

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It's important to keep your printer in good shape to make the most out of it. In this chart, you can find a list of the extruder maintenance procedures and how frequently these should be done. Maintenance Plan


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