sentences:  This sub-series was introduced on 1 December 2001 to replace the aging 183 and 189 series rolling stock on Chuo Main Line "Azusa" and "Kaiji" services.Based at Matsumoto depot, the fleet consisted of sixteen 9-car sets (M101 to M116) with a full cab at the Matsumoto end and a gangwayed cab at the Tokyo end, and five 2-car "add-on" sets (M201 to M205) with a full cab at the Tokyo end and a shunting cab at the Matsumoto end.The type was the recipient of the 45th Blue Ribbon Award (2002) of the Japan Railfan Club.