Abstract: A new mode detecting apparatus for video cassette recorder which is capable of linearly directly controlling the mode position is disclosed. A light emitting diode is installed under a main deck. A mode driving plate is provided with a plurality of holes for selectively passing the light from the light emitting diode. The light which have passed through the holes of the mode driving plate are sensed by photo transistors which then generates electrical signals. The signals are sent to a microcomputer which then detects the mode of the deck. The constitution of the gears is simplified, and the mode can be recognized and controlled by the mode driving plate directly and linearly.

Abstract: A floppy disk drive having a driving section provided with a spindle motor and a linear pulse motor includes a primary rail member (7) which determines a direction of movement of a reciprocating moving member (13) of the linear pulse motor and which has a plurality of V-shaped reference point cut-outs (8a, 8b) which serve as guides for reference pins (17, 18) of a jig. The spindle motor and the linear pulse motor are carried by a motor base (3) which has a plurality of holes (4a, 4b) for receiving the reference pins (17, 18). These pins are long enough to extend into the cut-outs. The holes (4a, 4b) have inner diameters which are larger than the outer diameters of the reference pins for enabling the motor base to be moved and adjusted. The arrangement enables an assembly of a floppy disk drive with high precision.