Cdj 1000 mk3 [card error]

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. :w00t:

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!

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...