Tokyo stocks fell Tuesday morning, weighed down by lackluster technology shares after some Japanese high-tech companies reported weaker-than-expected earnings results the previous day. The 225-issue Nikkei Stock Average fell 239.89 points, or 0.85 percent, from Monday to 28,009.35. The broader Topix index was down 14.17 points, or 0.73 percent, at 1,937.24. On the top-tier Prime Market, decliners were led by rubber product, electric appliance and transportation equipment issues.