DEBUG by JTAG

[maddoc]

Hello. can you tell me how I can connect the esprog debugger(jtag) to this board?  I have a problem with pin io15 (TDO), which is powered by 3v all the time, and it seems to me that this is interfering with debugging. Of course, I can cut the track for debugging time. But as a novice developer, I am tormented by the question: How did you debug on this board via JTAG? I don't want to use printf()
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[admin]

it not use by JTAG, just debug by USB port via serial port.