TX2 doesn't work in our motherboard

We used TX2 on our own motherboard , power supply is normal, CARRIER_PWR_ON enabled, RESET_OUT RESET_IN is into a high level. The Power Up Sequence conform to the requirements of the OEM design, but can’t enter the system. HDMI and UART0 have no output information, and the network doesn’t work.When we used the TX2 on development board,it can access to the system successfully. Could I ask what is possible reason lead to?

Hi, first please check if it enters recovery mode. And also check the OEM DG for correct strapping pins settings.