the board is based imx28evk schematics. voltages look good. the board seems behave correctly when it is read from JTAG (but cannot be written). It does not response to USB connection (mfgtool shows not being able to place the processor to a special mode). there is no output from the debug UART.
Will there be any output if the board is configured to boot from NAND but the NAND is empty? Or any thing I can check to see if the processor is running or not?