Cdj 1000 mk3 [card error]

[mamifer]

Hello guys. I have a CDJ 1000 MK3 pair.

One player works fine, I have the 2.30 firmware on it, but I have one problem with 2nd one, with 2.20 firmware.

After I press the power button, for 1-2 seconds I have "CARD ERROR" message on display. Also, the led from the card slot is always green ( the second player have no active green light when it's on ). I don't have any card inserted. The slot is empty, but the error is permanent. Also, if I open and close the "card door", error message appears again for 1-2 seconds on display.

I've tried to make a complete research but I didn't find any helpful advice for this problem. Please let me know if you have some ideas.

Thank you!

[mamifer]

I've updated the player on 2.30 firmware. Problem still persist.

When the card door is opened, light is down. After I close the door, green light is up and CARD ERROR message displayed...