To simplify the assembling work by simplifying the structure and to realize effective high volume production.

A lower cabinet 5 formed of a metal plate, an electronic circuit board assembly 4, a mechanism assembly 2, and an upper cabinet 1 are stacked and assembled sequentially in the vertical direction thus producing an electronic apparatus. The lower cabinet 5 is provided with columnar parts 21, 22 to which the electronic circuit board assembly 4 and the mechanism assembly 2 can be fixed. Furthermore, a recess 25 for fixing and positioning the electronic circuit board assembly 4 or the mechanism assembly 2 is provided at the forward end part of the columnar part 21, 22.