Stage apparatus assembling method

A stage apparatus assembling method of assembling a separable stage apparatus, the method comprising:

• a coarse adjustment step of positioning a sub mounting table having a sub base plate with respect to a main mounting table having a main base plate by a coarse adjustment mechanism within a range of a coarse adjustment error and fixing the coarse adjustment mechanism;
• a temporary positioning step of bringing a guide section, which is disposed on the main mounting table and is movable with respect to the main mounting table, into contact with a positioning member disposed on the sub mounting table and fixing the guide section;
• a fine adjustment step of positioning the sub base plate with respect to the main base plate by a fine adjustment mechanism within a range of a fine adjustment error and fixing the fine adjustment mechanism;
• a separation step of moving the sub mounting table with respect to the main mounting table and separating the main mounting table from the sub mounting table;
• and
• an assembly step of moving the sub mounting table to the displaced main mounting table such that the positioning mechanism is positioned with respect to the guide section at the same position as in the temporary positioning step,
• wherein the fine adjustment error is smaller than the coarse adjustment error.