Disk Drive Operation; Drive Mechanism; Head Disk Assembly; Base Casting Assembly - Samsung WA31273A Technical Manual

Winner 3a; winner 2a series ide drives

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Table Of Contents

Table of Contents

This chapter describes the operation of the Winner 3A WA31273A / WA32543A / WA33203A /

WA32163A / WA31083A, Winner 2A WA32162A functional subsystems. It is intended as a

guide to the operation of the drive, rather than a detailed theory of operation.

5-1

Drive Mechanism

This section describes the mechanism of the drive. the Winner 3A WA31273A / WA32543A /

WA33203A / WA32163A / WA31083A, Winner 2A WA32162A hard disk drive consists of a

mechanical sub-assembly and a printed circuit board assembly (PCBA) as shown in figure 5-

5-1-1 Head Disk Assembly

The head/disk assembly (HDA) contains the mechanical sub-assemblies of the drive, which

are sealed between the aluminum-alloy base and cover. The HDA consists of the disk stack

assembly, rotary positioner assembly, head stack assembly, actuator latch assembly, and

base casting which includes the DC motor assembly. HDA assembly is done in a Class 100

clean room. These subassemblies cannot be adjusted or field repaired.

CAUTION: To avoid contamination in the HDA, never remove or adjust its cover and seals

Disassembling the HDA voids your warranty.

The Winner 3A WA31273A / WA32543A / WA33203A / WA32163A / WA31083A, Winner 2A

WA32162A products are part of a one, two and three disk product family. The Winner 3A

WA31273A / WA31083A contains one magnetic disk and two read/write heads and uses

both sides of the magnetic disk.

WA32162A have two magnetic disks and four read/write heads, and the Winner 3A

WA33203A has three magnetic disks and five read/write heads.

5-1-2 Base Casting Assembly

A one piece, aluminum-alloy base casting provides a mounting surface for the drive

mechanisms and PCBA. The base casting also plays the role as the flange for the DC spindle

motor assembly. A gasket provides a seal between the base and cover castings that enclose

the drive mechanism.

WA31273A / WA32543A / WA33203A / WA32163A / WA31083A / WA32162A 5-1