A system and method of selecting a routing datapath between an active datapath and a redundant datapath for a communication device are provided. Next, the reactor chamber is baked, which can comprise, for example, baking with hydrogen. Unnecessary solder paste on the surface of the mask is scraped by the scraping squeegee. A first contact is in direct contact with the n-type diffusion layer in the upper portion of the first pillar-shaped silicon layer, and a second contact is in direct contact with the p-type diffusion layer in the upper portion of the second pillar-shaped silicon layer. The supporting structure has a first and a second lateral supporting member extending along opposite sides of the seat and connected to each other by a transverse member extending along the join between the seat portion and the backrest. Namely, at least parts of the thin plates of the stator core are adhered to each other by a varnish that is an insulating adhesive.