Tokyo stocks lost ground Friday morning as the yen's appreciation against the U.S. dollar soured the market mood and weighed on exporter issues, but solid earnings from some electrical appliance firms saw that sector trim overall losses.

The 225-issue Nikkei Stock Average lost 51.02 points, or 0.25 percent, from Thursday to 20,093.57.

The broader Topix index of all First Section issues on the Tokyo Stock Exchange, meanwhile, fell 4.53 points, or 0.28 percent, to 1,628.48.

Mining, iron and steel, and insurance issues-linked issues comprised those that declined the most by the morning break.