①Check whether the name of gcode file is wrong.File name shoud be composed of English and numbers. And the SD card cannot have folders.
②Re insert and click the refresh button on the screen to refresh.
③Format the SD card to FAT32 format, or replace it with a new SD card.
①The card slot may be oxidized. Wipe the SD card slot with alcohol before testing.
② If the above methods are invalid, the card slot may be damaged. If the above methods are invalid, we suggest you create an after-sales ticket and our After-sales engineers will help you solve the problem. (Reply time :1 working day)
Please click this link to submit your ticket: