PX4 USB connection error

Hi, nowdays i made baseboard for pixhawk 6x.
The baseboard was made reference diagram, and another baseboard working well.

but my baseboard(just USB) is not working, TELEM1, CAN is working well.
USB part is refer to “DS-010 Pixhawk autopilot bus standard”.

And my pixhawk 6x is conneced to pixhawk mini, and then is working at Qgroundcontrol.

What should i check to baseboard to operate the baseboard(USB port)?