法令翻訳 http://www.japaneselawtranslat...amp;page=5

(種類株主総会の決議を必要とする旨の定めがある場合)
第三百二十三条   種類株式発行会社において、ある種類の株式の内容として、株主総会（取締役会設置会社にあっては株主総会又は取締役会、第四百七十八条第八項に規定する清算人会設置会社にあっては株主総会又は清算人会）において決議すべき事項について、当該決議のほか、当該種類の株式の種類株主を構成員とする種類株主総会の決議があることを必要とする旨の定めがあるときは、当該事項は、その定款の定めに従い、株主総会、取締役会又は清算人会の決議のほか、当該種類の株式の種類株主を構成員とする種類株主総会の決議がなければ、その効力を生じない。 ただし、当該種類株主総会において議決権を行使することができる種類株主が存しない場合は、この限りでない。

Cases of Provisions Requiring Resolution at General Meeting of Class Shareholders
Article 323   If, at a Company with Class Shares, there is a provision, as a feature of a certain class of shares, to the effect that, with respect to the matter that is subject to the resolution at the shareholders meeting (for a Company with a Board of Directors, shareholders meeting or board of directors; and for a Company with Board of Liquidators provided for in Article 478, paragraph (8), shareholders meeting or board of liquidators), in addition to such resolution, the resolution at a General Meeting of Class Shareholders constituted by the Class Shareholders of such class of shares is required, such matter does not become effective unless the resolution is passed at a General Meeting of Class Shareholders constituted by the Class Shareholders of the shares of such class in addition to the resolution at the shareholders meeting, board of directors or board of liquidators, consistently with the provisions of articles of incorporation; provided, however, that this does not apply to the case where there exists no Class Shareholder who may vote at such General Meeting of Class Shareholders.