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3.5-INCH FIXED DISK DRIVE
TOSHIBA AMERICA, INC.
DISK PRODUCTS DIVISION
Contents of this manual are subject to change without prior notice.
Copyright 1987 Toshiba America, Inc.
All rights reserved
Document Number DW32-02-012
Edition Date Published Revised Contents
01 September 1987 Initial Release
02 April 1988 iii, 1-1, 2-1, 2-3, 2-4, 3-1, 3-2, 3-3
Direct comments concerning this publication to:
TOSHIBA AMERICA, INC.
Disk Products Division
9740 Irvine Blvd.
Irvine, CA 92718
The MK-134FA is designed to comply with UL, CSA and TUV standards.
Contact Toshiba America, Inc. to obtain additional Information.
-ii- MK-134FA OEM Manual
TABLE OF CONTENTS
SECTION 1 - INTRODUCTION
1.1 Purpose of Manual 1-1
1.2 Related Documents 1-1
1.3 General Description 1-2
SECTION 2 - SPECIFICATIONS
2.1 Storage Capability 2-1
2.2 Functional Specifications 2-1
2.3 Environmental Specifications 2-2
2.4 Reliability Characteristics 2-3
2.5 Power Requirements 2-4
2.6 Physical Dimensions, Weight and Mounting 2-5
SECTION 3 -INSTALLATION
3.1 Mounting Orientation 3-1
3.2 Cooling and Disk Drive Enclosure 3-1
3.3 Indicators 3-1
3.4 Jumper Functions 3-2
3.4.1 Write Protect 3-2
3.4.2 Radial/Daisy-Chain Mode 3-2
3.4.3 Terminator 3-2
3.4.4 Switch 0 through Switch 3 3-2
3.4.5 Write Pre-compensation 3-2
3.4.6 Jumper Selections 3-3
SECTION 4 -INTERFACE
4.1 Control Cable 4-1
4.2 Data Cable 4-1
4.3 Control Cable Pin Assignments 4-2
4.4 Data Cable Pin Assignments 4-3
SECTION 5 - DATA FORMATS
5.1 Soft Sector Formats 5-1
5.2 Definition of Fields 5-1
SECTION 6 - MAINTENANCE CONSIDERATIONS
6.1 Equipment Maintenance 6-1
6.1.1 In-Warranty Maintenance 6-1
6.1.2 Out-of-Warranty Maintenance 6-1
6.1.3 Equipment Return Instructions 6-1
-iii- MK-134FA OEM Manual
TABLE TITLE PAGE
1 Related Documents 1-1
2 Storage Capability 2-1
3 Functional Specifications 2-1
4 Environmental Specifications 2-2
5 Reliability Characteristics 2-3
6 Power Requirements 2-4
7 Connector PJ4 Jumper Selections 3-3
8 Control Cable Pin Assignments 4-2
9 Data Cable Pin Assignments 4-3
FIGURE TITLE PAGE
1 Dimensions and Mounting Holes 2-5
2 Mounting Orientation 3-1
3 Clearance Requirements 3-1
4 Soft Sector Format 5-1
-iv- MK-134FA OEM Manual
1.1 PURPOSE OF MANUAL
The purpose of this manual is to describe the MK-134FA 3.5-inch fixed disk drive to the level of detail required
for product integration.
System designers planning to develop a custom controller and others who require additional product
information should refer to the MK-134FA Product Specification for additional product and interfacing details.
1.2 RELATED DOCUMENTS
Detailed product and interfacing information is given in the MK-134FA Product Specification.
Table 1 lists OEM Manuals that are available for other Toshiba disk products. The MK-134FA is included to
indicate how its storage capacity compares to other disk products available from Toshiba.
Toshiba Media Storage Unformatted Type Of Document
Product Size Technology Capacity (MB) Interface Number
MK-134FA 3.5 Winchester 53 ST506/412 DW32-02-012
MK-50FB 5.25 Winchester 43 to 86 ST506/412 DW54-01-006
MK-150FA 5.25 Winchester 86 to 173 ESDI DW54-01-007
MK-250FA 5.25 Winchester 382.5 ESDI DW54-01-014
MK-180FB 8.0 Winchester 83 to 166 SMD DW80-01-008
MK-280FC 8.0 Winchester 340 to 510 HSMD DW80-01-009
MK-388FA 8.0 Winchester 720 HSMD DW80-01-013
Table 1 - Related Documents
Contact your nearest Toshiba Disk Products Division Sales Representative to order a manual or obtain
more detailed technical information.
1-1 MK-134FA OEM Manual
1.3 GENERAL DESCRIPTION
The MK-134FA is a 3.5-inch Winchester disk drive designed primarily to be incorporated into high perform-
ance desk-top and lap-top computers.
An industry standard ST50S/412 interface provides compatibility with other 3.5-inch and 5.25-inch Winches-
ter storage products and commercially available controllers. The MK-134FA complies with the standard 3.5-
inch mini floppy size, mounting and power requirements.
When used with conventional ST50S/412 controllers, the MK-134FA offers a capacity of 53 megabytes
(unformatted), or 44 megabytes (typical, formatted).
The positioning system utilizes a rotary voice coil actuator to provide a 25 millisecond average seek time and
a 50 millisecond maximum seek time.
To facilitate operation in portable applications, extensive use of VLSI reduces average power consumption
to only 10 Watts.
Careful choice of cylinde r and head configuration allows for direct Operating System compatibility with existing
The Head Disk Assembly (HDA) is enclosed in a die cast aluminum base plate and shroud and incorporates
numerous safety features to maximize reliability:
The base plate and shroud assembly provides mechnical mounting and EMI (Electro-magnetic
Interference) shielding for the heads, disks and actuator.
The sealed assembly incorporates an air recirculatory system and a 0.3 micron lifetime filter
to ensure a contamination-free environment and even thermal distribution.
When power is removed, a fail-safe system automatically returns the heads to a dedicated
landing zone and a solenoid automatically locks the carriage in this location. This prevents
head and media damage during transit.
Careful planning in regard to the location of components on the circuit card, especially those with electrical
noise potential, contributes to very low levels of read channel noise and enhances data recovery.
MK-134FA OEM Manual 1-2
2.1 STORAGE CAPABILITY
STORAGE CAPACITY MK-134FA
Unformatted Capacity 53.4 MB
Number of Disks 4
Number of Data ReadIWrite Heads 7
Table 2 - Storage Capability
2.2 FUNCTIONAL SPECIFICATIONS
Number of Cylinders 733
Tracks per Inch 930 TPI
Bits per Inch 9,383
Flux Changes per Inch 9,383
MFM Data Transfer Rate 5.0 Megabits per Second
Head Recovery Time:
Head Change 13 Microseconds
Write to Read 8 Microseconds
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