Thank u Stella,
What happened to me was I lost capt side CMD & CWS enroute, and on the approuch capt`s fmc was gone. We still had our FDs all the way , nothing alse happened.
It`s weird that we have different situation after a same FCC failed.
I am now asking my mechanic friends for their maintainance manual, after I find the answer, I will share with you guys.
thank you again Stella!