Beagle Pocket does not turn on.

We made the board with the open source of Pocket Beagle.

https://github.com/beagleboard/pocketbeagle

We made a total of five.
Only one of them works, and four do not.
I don’t know the cause.
All pin maps have the same voltage.
The voltage of EMU0 (CDN of SD card connector) is 3.3V for normal board and 0V for abnormal board.

Auto Generated Inline Image 1.jpg

How to solve it?
What do we need to check?

Best regards
CH Cho