Toshiba MK6017MAP - Manual (Page 11)

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Copyright © 2000 Toshiba corporation. All rights reserved.
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1. SCOPE
This document describes the specifications of the following model, MK6017MAP of 2.5- inch type
Winchester disk drives.
.
Factory Number Sales Number
HDD2155 MK6017MAP
2. GENERAL DESCRIPTION
The MK6017MAP which is noted hereinafter as MK6017MAP or as the drive comprises
a series of intelligent disk drives .
The drive features an ATA-2 / 3 / 4 /5 interface embedded controller that requires a simplified adapter board
for interfacing to an AT or AT compatible bus. The drives employ Winchester technology and a closed loop
servo control system which have made high recording density of 34.6 M bit/mm
2
(22.35G bit/in
2
)and average
access time of 13 msec with highest reliability of 300,000 hours for MTTF (Mean Time to Failure) possible.
The drive is distinctive for its small and light body with 9.5mm height and 92 grams of weight.
The MK6017MAP consists of an HDA (Head Disk Assembly) and a printed circuit board. The HDA has a
sealed module which contains a disk spindle assembly, a head actuator assembly and an air filtration
system. This HDA adopts Winchester technology which enhances high reliability. The actuator is a rotary
voice coil motor which enables high-speed access.
The disk is driven directly by a DC spindle motor. Air filtration is provided by a high performance air filtration
system using both breather and circulation filters.
The drive provides a carriage lock mechanism which is activated automatically upon power down in order to
prevent head/media from being damaged when it is not operating or under shipment.
The printed circuit board which is set externally to the HDA and equipped with all the electric circuitry
necessary to operate the drive except the head drivers . The power supply and interface signal connectors
are mounted on the board. Only the head control IC’s are located within the HDA. The circuitry perform the
following functions:
Read/Write, Task File Control, Spindle Motor Control, Seek and Head Positioning Servo Control, Abnormal
Condition Detection and Shock Sensor Control.