* Close of Nikkei, Topix delayed; cause being checked -TSE
* Electronics companies buoy market on improved outlooks
* Exporters rise after U.S. GDP growth lifts Wall Street
By Aiko Hayashi
TOKYO, Oct 30 (Reuters) - Japan's Nikkei average rose 1.5 percent on Friday, buoyed by shares of tech companies with improved earnings prospects such as Pioneer Corp, while exporters climbed on data showing the U.S. economy had returned to growth.
The close of the Nikkei and the broader Topix were delayed due to problems with the close of one share -- Fast Retailing, a Tokyo Stock Exchange spokeswoman said, without elaborating.
The Tokyo bourse is looking into the cause.
Shares of Pioneer Corp surged 7 percent after the maker of car and home electronics said it now expects to post a smaller net loss than its earlier forecast while Takeda Pharmaceutical climbed after quarterly recurring profit rose 9 percent.
"A rally in U.S. stocks prompted a market rise here, but further gains may be tough for now as investors now want to monitor the economic outlook going forward," said Kazuhiro Takahashi, general manager at Daiwa Securities SMBC.
"Having said that, with eyes on corporate earnings, investors are reacting sensitively to either upward or downward revisions for earnings outlooks."
The benchmark Nikkei climbed 143.64 points to 10,034.74 after closing at a three-week low below 10,000 on Thursday. The index's close was priced more than 40 minutes after the regular closing time.
The broader Topix added 1.4 percent to 894.67.
Japan Airlines gained 1.7 percent after the struggling airline turned to the government for a bailout. (Reporting by Aiko Hayashi and Elaine Lies; Editing by Edwina Gibbs)