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MK-150FA SERIES
5.25-INCH FIXED DISK DRIVES
OEM MANUAL
TOSHIBA AMERICA, INC.
DISK PRODUCTS DIVISION
Contents of this manual are subject to change without prior notice.
Copyright 1988, 1989 Toshiba America, Inc.
All rights reserved
Document Number D W54-0 1-007-02
REVISION RECORD
Edition Date Published Revised Contents
01 April 1986 Initial Release
02 February 1989 Revised Format
Direct comments concerning this publication to:
TOSHIBA AMERICA, INC.
Disk Products Division
9740 Irvine Blvd.
Irvine, CA 92718
(714) 583-3000
AGENCY APPROVALS
UL CSA TUV
E63303 LR39635-65 UEA-C046
MK-150FA Series OEM Manual -i-
TABLE OF CONTENTS
PAGE
SECTION 1 INTRODUCTION
1.1 Purpose of Manual 1-1
1.2 Related Documents 1-1
1.3 Ge neral 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 Enclosures 3-1
3.3 Switch and Jumper Functions 3-2
3.3.1 PJ7 Jumper Functions 3-3
3.3.2 PJ5 and PJ31 Jumper Functions 3-4
3.3.3 PJ32 Jumper Functions 3-4
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
4.5 ESDI Commnad Configuration and Functions 4-4
4.6 Request Status Command 4-5
4.7 Configuration Data Command Modifiers 4-6
4.8 Configuration Data Response 4-7
4.9 Control Command Modifiers 4-7
4.10 Data Strobe Offset Command 4-8
4.11 Track Offset Command 4-8
SECTION 5 DATA FORMATS
5.1 Hard Sector Format 5-1
5.2 Soft Sector Format 5-1
5.2.1 Speed Variance Gap 5-2
5.3 Defect Map Format 5-2
SECTION 6 MAINTENANCE CONSIDERATIONS
6.1 Equipment Maintenance
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
-ii- MK-1S0FA Series OEM Manual
TABLE LIST
TABLE TITLE PAGE
1 Related Documents 1-1
2 Sto rage Capability 2-1
3 Functional Specifications 2-1
4 Environmental Specifications 2-2
5 Reliability Characteristics 2-3
6 Power Requirements 2-4
7 PJ7 Jupmpers for 65 x 256 byte 3-3
8 Common PJ7 Jumper Configuration 3-4
9 Control Cable Pin Assignments 4-2
10 Data Cable Pin Assignments 4-3
11 ESDI Command Configuration 4-4
12 ESDI Command Functions 4-4
13 Request Status Command 4-5
14 Configuration Data Command Modifiers 4-6
15 Configuration Data Response 4-7
16 Control Command Modifiers 4-7
17 Data Strobe Offset Command Modifier Bits 4-8
18 Track Offset Command Modifier Bits 4-8
FIGURE LIST
FIGURE TITLE PAGE
1 MK-150FA Dimensions and Mounting Holes 2-5
2 Mounting Orientation 3-1
3 Clearance Requirements 3-1
4 Switch and Jumper Settings 3-2
5 SW1 (Switch 1) Functions 3-2
6 SW2 (Switch 2) Functions 3-2
7 PJ32 Jumper 3-4
8 Hard Sector Format 5-1
9 Soft Sector Format 5-2
10 Defect Map Format 5-3
MK-150FA Series OEM Manual -iii-
SECTION 1
INTRODUCTION
1.1 PURPOSE OF MANUAL
The purpose ofthis manual is to describe the MK-150FA Series 5 .25-inch fixed disk drives 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-150FA Series Product Specification for more details.
1.2 RELATED DOCUMENTS
Detailed product and interfacing information is given in the M K-150 FA Series Product Specification docu me nt
I
number 71Y101397.
Table 1 lists OEM Manuals that are available for other Toshiba disk products. The MK-150FA 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 23 to 53 ST506/412 DW32-01-012
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-388FC 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-150FA Series OEM Manual
1.3 GENERAL DESCRIPTION
The MK-150FA Series is a family of 5.25-inch Winchester disk drives designed primarily to be incorporated
into systems supporting multi-user and multi-tasking applications. Three models comprise the MK-150FA
Series: MK-153FA (86.5 MB), MK-154FA (121 MB) and MK-156FA (173 MB).
All drives comply with the ST506/412 size, mounting and power requirements
The MK-150FA Series supports the Enhanced Small Disk Interface (ESDI). ESDI provides device level
capabilities for multi-spindle or highly optimized applications.
The positioning system utilizes a rare earth magnet and a rotary voice coil actuator to provide a 25 millisec-
ond average seek time and a 45 millisecond maxim~m seek time.
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 (Electronic
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.
A barometric filter in the HDA provides ambient pressure equalization.
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.
Use of a center stack servo system improves head positioning accuracy across the full environmental
operating range and allows servo writing to be performed with the disk stack mounted in the drive.
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.
To further reduce read channel nOise, DC voltages are filtered before being used on the read channel.
Extensive use of VLSI minimizes the number of components and optimizes MTBF (Mean Time Between
Failures).
MK-150FA Series OEM Manual 1-2
SECTION 2
SPECIFICATIONS
2.1 STORAGE CAPABILITY
STORAGE CAPACITY MK-153FA MK-154FA MK-156FA
Unformatted Capacity 86.5 MB 121.0 MB 173.0 MB
Number of Disks 3 4 6
Number of Data ReadlWrite Heads 5 7 10
Number of Tracks 4,150 5,810 8,300
Table 2 - Storage Capability
2.2 FUNCTIONAL SPECIFICATIONS
Specifications are the same for all models
Number of Cylinders 830
Track Capacity 20,832 Bytes
Tracks per Inch 900 TPI
Bits per Inch 18,766 BPI
Flux Changes per Inch 12,510 FCI
Recording Method 2,7 (RLL)
Data Transfer Rate 10.0 Megabits per Second
Head Recovery Time:
Head Change 13 Microseconds
Write to Read 8 Microseconds
Seek Time: (includes settling)
Track-to-Track 5 Milliseconds
Average 23 Milliseconds
Full Stroke 45 Milliseconds
Start Time 20 Seconds Typical- 30 Seconds Maximum
Stop Time 20 Seconds Typical - 30 Seconds Maxim um
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