One F set, F17, was specially modified at Sendai Depot between August 1997 and January 1998 for use on additional Nagano Shinkansen Asama services in February 1998 during the 1998 Winter Olympics held in Nagano.
The train was renumbered F80, and modifications included ability to operate on both 25 kV AC 50 Hz and 60 Hz overhead power supplies, weight-saving measures to comply with the 16 tonne axle load restriction, and additional control equipment to cope with the 30‰ gradient of the Nagano Shinkansen.
Maximum speed was limited to 210 km/h when operating on the Nagano Shinkansen.

Seats in the end cars, cars 1 and 12, were replaced with 
E2 series-style seats to reduce weight.

The train was formed as follows, with car 1 at the Tokyo end.
Car 11 was a Green (first class) car, and car 9 had a buffet counter.

Cars 2, 4, 8, and 10 were each fitted with one cross-arm pantograph.

After February 1998, set F80 was used interchangeably with other F sets, and remained in operation until 2004.
One F set, F17, was specially modified at Sendai Depot between August 1997 and January 1998 for use on additional Nagano Shinkansen Asama services in February 1998 during the 1998 Winter Olympics held in Nagano. The train was renumbered F80, and modifications included ability to operate on both 25 kV AC 50 Hz and 60 Hz overhead power supplies, weight-saving measures to comply with the 16 tonne axle load restriction, and additional control equipment to cope with the 30‰ gradient of the Nagano Shinkansen. Maximum speed was limited to 210 km/h when operating on the Nagano Shinkansen.
Seats in the end cars, cars 1 and 12, were replaced with 
E2 series-style seats to reduce weight.
The train was formed as follows, with car 1 at the Tokyo end. Car 11 was a Green (first class) car, and car 9 had a buffet counter.
Cars 2, 4, 8, and 10 were each fitted with one cross-arm pantograph.
After February 1998, set F80 was used interchangeably with other F sets, and remained in operation until 2004.
200 Series Shinkansen