Abstract: An improved interconnection assembly is disclosed suitable for use, for example, in completing an electronic signal path between a printed circuit board (PCB) and an internal component within a head disc assembly (HDA) of a disc drive. The (PCB) has a primary side suitable for mounting surface mount devices and a secondary side facing a basedeck of the disc drive. The interconnection assembly comprises a conductive pin provisioned within a pin aperture in the PCB and a connector provisioned within a connector aperture in the HDA. The pin is inserted and secured within the pin aperture using primary side operations. A distal end of the conductive pin includes an electrical contact surface at the distal extent of the pin and which intersects an axis of insertion in the pin aperture. The electrical contact surface contacts the connector when the PCB is mated with the HDA.

Abstract: A disk drive assembly includes a disk pack with an axially retractable spindle assembly, along with a rotary actuator, mounted within a unitary deck and precision aligned by bores through spaced apart upper and lower support walls of the deck. Bushings, mounted to opposite ends of a spindle shaft through bearings, are aligned with the bores by inserting the retracted spindle assembly into the deck, with a spring biasing the spindle assembly into the retracted position. Fasteners through the opposed support walls draw the bushing sleeves axially outward against the spring force to preload the bearings as the shaft is aligned and secured, without employing a jig or any other alignment tooling.