Hard Drive: WESTERN DIGITAL: WD 93048 A 41MB 3.5"/HH IDE / AT
W D 9 3 0 4 8 A WESTERN DIGITAL
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 3.5"/HH Cylinders 782| | |
Capacity form/unform 41/ MB Heads 4| | |
Seek time / track 70.0/ ms Sector/track 27| | |
Controller IDE / AT Precompensation
Cache/Buffer 2 KB Landing Zone 862
Data transfer rate 0.938 MB/S int Bytes/Sector 512
0.938 MB/S ext
Recording method RLL 2/7 operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 40 50 | -40 60
Power: sleep W Humidity % 8 80 | 5 95
standby W Altitude km -0.458 2.898| -0.458 12.192
idle W Shock g 10 | 40
seek W Rotation RPM 3600
read/write W Acoustic dBA 40
spin-up W ECC Bit 22
MTBF h 40000
Warranty Month 12
Lift/Lock/Park NO Certificates
Layout
WESTERN WD93028/93048/95028/95048-/A INSTALLATION GUIDE
+---------------------------------------------------------+ | |XX I | |XX N | |XX T | |XX E | |XX R | |*X F J2 | |XX A | |XX C | |XX E | |XX | |XX1 | |6-5 J8 | || | ++LED |2-1 ++ |XX J1 | |XX Power +---------------------------------------------------------+
J2 J8 J1
+39------------------------------------1++5-3-1++-------+
|o o o o o o o o o o o o o o o o o o o o||o o o||O O O O|
|o o o o o o o o o o o o o o o o o o o||o o o||1 2 3 4|
--+40------------------------------------2++6-4-2+++-+-+-++----
| | | +5V
(Pin 20 keyed) | | +- GND
| +--- GND
+----- +12V
Jumpers
WESTERN WD93028/93048/95028/95048/-A INSTALLATION GUIDE
Jumper Setting
==============
Single and Dual (Master/Slave) Installations
--------------------------------------------
The installation procedures describe a single or dual installation.
An intelligent drive is compatible with other intelligent drives that
support a master/slave configuration. ST-506 hard drives using a
standard AT controller are NOT compatible.
If you are installing an intelligent drive and a WDAT adapter board
in am IBM PC AT that currently has an original Conner CP342 or CP3022
drive, you will discover that these drives are incompatible. Only one
drive can be functional, depending upon the jumper configuration of
the WDAT adapter board. This restriction does not apply to AT
compatible systems.
J8 Master/Slave Configuration
------------------------------
Verify that the jumper shunts on the drive's J8 jumper block are
properly installed to match your configuration choices.
Single installation:
Only
+5-3-1+ If this is your first and ONLY intelligent drive in your
|o o o| system their should NO JUMPERS installed on J8.
|o o o|
+6-4-2+
Dual installation:
Master Slave
+5-3-1+ +5-3-1+ if you are installing two intelligent drives
|X o o| |o X o| you must designate one of them as the
|X o o| |o X o| primary or "master" and the other as the
+6-4-2+ +6-4-2+ secondary or "slave". Jumper your Western
Digital intelligent drive accordingly: A
jumper on pins 3-4 designates an intelligent
drive as a slave; a jumper on pins 5-6
designates an intelligent drive as a master.
Installation with a pre-existing Conner CP342 or CP3022 drive:
+5-3-1+ Configure the Western Digital drive as the slave. Install |o X X| jumpers on the drive's J8 jumper block as shown. The Conner |o X X| drive should be configured as the master. +6-4-2+
Install
WESTERN WD93028/93048/95028/95048/-A/AD INSTALLATION GUIDE
Notes on Installation
=====================
Gather Supplies
---------------
If your computer's motherboard has a 40-pin connector for installa-
tion of a hard disk drive, you will need the following items:
- Your Western Digital Drive:
Capacity 3.5 inch 5.25 inch 20 MB WD93028-A WD95028-A 40 MB WD93048-A WD95048-A
- One 40-pin interface cable (12 inches maximum length)
- This installation Guide
- Optional mounting frame, bezel and LED
If there is not a 40-pin connector on the motherboard, your drive
will additionally require:
- An adapter card such as those available from Western Digital: - WDAT-140 (provides connector for one hard drive)
- WDAT-240 (provides a connector for both a hard drive and a floppy
drive)
- WDAT-440 (provides a hard drive connector, one floppy drive
connector, two serial ports, and one parallel port).
Other standard 40-pin adapter cards may also be compatible with your
drive.
Interface Connector: 2x20 pin right angle .1" Berg stick (pin 20
keyed)
Cable Type: 40-conductor mass terminated flat ribbon
Cable Length: 12 inches maximum
Power Connector: 4 Pin MOLEX P/N 15-24-4041
Mating Connector: AMP 1-480424-0 (Body)
AMP 60619-4 (Pins)
Interface Wire Gage: 18 AWG
Features
WESTERN WD93028/93048/95028/95048/-A/AD INSTALLATION MANUAL
Product Description
-------------------
Western Digital's WD93028-A and WD93048-A are intelligent drive
products for the IBM PC/AT and compatibles. Their architectures
integrate an ST-412/ST-506 compatible hard drive assembly with a
controller on a single printed circuit board that is mounted on the
disk drive chassis. The integration of disk drive and controller
increases reliability and performance by eliminating redundant
circuitry. Models WD93028-A and WD93048-A offer 20 megabytes and 40
megabytes of storage, respectively, in a 3.5 inch form factor. These
drives are also available in a 5.25 inch frame (WD95028-a and
WD95048-A).
With your new Western Digital drive you'll enjoy these benefits of
hard disk storage:
The convenience of booting from a hard disk drive.
The ability to easily store numerous files and programs and work
with large documents or data bases.
Product Feature --------------- - PC/AT compatible design based on Western Digital's WD42C22A Host Interface and Disk controller
- Data separator and write precompensation logic designed for optimal media compatibility
- 16-Bit, bi-directional command/data bus
- Data transfer rate of 7.75 Mbits per second (RLL encoding)
- Error detection/correction
- Automatic retries on all read/write operations
- Extensive self-test capability
- 3:1 interleave for increased data throughput
- Supports any logical drive type of equal or less capacity
System Requirements
-------------------
You can use your drive in an IBM PC/AT or compatible system that has
Disk Operating System (DOS) version 3.0 or later. Consult your
Western Digital representative/dealer if you need information about
other operating systems.
Low-level Format
----------------
Your Western Digital drive has been preformatted at the factory.
However, if you should need to reformat your drive, Western Digital
provides a format utility, WDFMT, that allows you to perform a low-
level format of the drive. Disk verification, surface analysis, and
bad track entry routines are also included in this utility. You may
use an equivalent formatting program, if it formats 27 sectors. Do
not use IBM's Advanced Diagnostic to perform a low-level format as it
can only format 17 sectors per track.
Tips and Troubleshooting
------------------------
It is becomes necessary to move your cimputer system, park the heads
first. Parking the drive heads move the heads to a safe, non-data
landing zone (zone 862). This helps protect the media and the heads
from accidental damage due to vibration, moving or shipping. Consult
your DOS manual. If your version o fDOS does not provide a head
parking command, there are a number of utility programs that can
provide this feature. Western Digital offers a park routine called
PARKIDE.
If your drive is not performing properly, first check your physical
installation. Check for reserved cables, an overloaded system power
supply, incorrect drive selection, etc.
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