The Nikkei share average <.n225> dropped 0.1 percent to 20,302.91.
The broader Topix <.topx> rose 0.3 percent to 1,633.94 and the JPX-Nikkei Index 400 <.jpxnk400> advanced 0.3 percent to 14,742.01.The Fed ends a two-day policy meeting later in the day with markets divided on whether it will take a hawkish or dovish stance. (Reporting by Ayai Tomisawa; Editing by Simon Cameron-Moore)