Epson Progression 4 User Manual

®
EPSON
User’s Guide
FCC COMPLIANCE STATEMENT
FOR AMERICAN USERS
IMPORTANT NOTICE
Epson America makes no representations or warranties, either express or implied, by or with respect to anything in this manual, and shall not be liable for any implied warranties of merchantability and fitness for a particular purpose or for any indirect, special, or
consequential damages.
Some
states do
not
allow the exclusion
of incidental or
consequential damages, so this exclusion may not apply to you.
COPYRIGHT NOTICE
TRADEMARKS
Epson is a registered trademark of Seiko Epson Corporation. VirtualCache is a trademark of Epson Portland, Inc.
Copyright Q 1993 by Epson America, Inc.
Tonance,CaUomia
ii
Important Safety Instructions
1.
Read all of these instructions and save them for later reference.
2.
Follow all warnings and instructions marked on the computer.
3.
Unplug the computer from the wall outlet before cleaning. Use a damp cloth for cleaning do not use liquid or aerosol cleaners.
4.
Do not spill liquid of any kind on the computer.
5.
Do not place the computer on an unstable cart, stand, or table.
6.
Slots and openings in the cabinet and the back or bottom are provided for ventilation; do not block or cover these openings. Do not place the computer near or over a radiator or heat register.
7.
Operate the computer using the type of power source indicated on its label.
8.
If you plan to operate the computer in Germany, observe the following safety precaution:
To provide adequate short-circuit protection and over-current protection for this computer, the building installation must be protected by a 16 Amp circuit breaker.
Beim Anschluf3 des Computers an die Netzversorgung muf3 sichergestellt werden, dafJ die Geb&udeinstallation mit einem 16 A ijberstromschutzschalter abgesichert ist.
9.
Connect all equipment to properly grounded (earthed) power outlets. If you are unable to insert the plug into an outlet,
contact your electrician to replace your outlet. Avoid using
outlets on the same circuit as photocopiers or air control systems that regularly switch on and off.
iii
10.
Do not allow the computer’s power cord to become damaged or
frayed.
11.
If you use an extension cord with the computer, make sure the total of the ampere ratings of the devices plugged into the extension cord does not exceed the ampere rating for the extension cord. Also, make sure the total of all products plugged into the wall outlet does not exceed 15 amperes.
12.
Do not insert objects of any kind into this product through the
cabinet slots.
13.
Except as specifically explained in this User’s Guide, do not
attempt to service the computer yourself. Refer all servicing to
qualified service personnel.
14. Unplug the computer from the wall outlet and refer servicing to qualified service personnel under the following conditions:
A. When the power cord or plug is damaged. B.
If liquid has entered the computer.
C. If the computer does not operate normally when the
operating instructions are followed. Adjust only those controls that are covered by the operating instructions. Improper adjustment of other controls may result in damage and often requires extensive work by a qualified technician to restore the computer to normal operation.
D.
If the computer has been dropped or the cabinet has been damaged.
E. If the computer exhibits a distinct change in performance.
Instructions Importantes de Sécurité
1.
Lire compl&ement les instructions qui suivant et les conserver pour references futures.
2.
Bien suivre tous les avertissements et les instructions indiques sur I’ordinateur.
3.
Wbrancher l’ordinateur de toute sortie muraie avant le nettoyage. Utiliser un chiffon humide; ne jamais utiliser un nettoyeur liquide ou une bonbonne aerosol.
4.
Ne jamais renverser un liquide d’aucune sorte sur l’ordinateur.
5.
Ne pas placer l’ordinateur sur un chariot, un support, ou une table instable.
6.
Les events dans le meubles, h l’arriere et en dessous sont concus pour 1’aQation; on ne doit jamais les bloquer. Ne pas placer l’ordinateur p&s d’une source de chaleur directe.
7.
L.e fonctionnement de l’ordinateur doit s’effectuer conformkment au type de source d’abmentation indiqu&e sur l’&iquette.
8.
Lorsqu’on d&sire utiliser l’ordinateur en Allemagne, on doit observer les normes s&u&a&s qui suivent:
Afin d’assurer une protection ad4quat.e a l’ordinateur contre les courtcircuits et le survoltage, l’installation de l’tkiifice doit comprendxe un disjoncteur de 16 amp.
9.
On doit brancher tout l’&quipement clans une sortie reli&e a la masse. Lorsqu’il est impossible d’ins&er la fiche darts la prise, on doit retenir les services d’un t%xtricien ou remplacer la prise. Ne jamais utiliser une prise sur le m&me circuit qu’un appareil h photocopie ou un syst&me de controle d’akration avec commutation
marche-a&t.
V
10.
S’assurer que le cordon d’alimentation de l’ordinateur n’est pas
effrit&
11.
Dans le cas oh on utilise un cordon de rallonge avec l’ordinateur, on doit s’assurer que la valeur totale d’amp&res branches clans le cordon n’exc&de en aucun temps les amperes du cordon de rallonge. La quantite totale des appareils branches dans la prise murale ne doit jamais exc6de.r 15 amperes.
12. Ne jamais ins&r un objet de quelque sorte que ce soit dans les
cavit& de cet appareil.
13.
Sauf tel que sp&i& dans la notice d’utilisation, on ne doit jamais tenter d’effectuer une reparation de l’ordinateur. On doit r&krer le service de cet appareil a un technicien qualifie.
14. Debrancher l’ordinateur de la prise murale et confier le service au
perso~d
de service quahfib selon ks conditions qui suivent:
A. Lorsque le cordon d’alimentation ou la prise sont
endommagk
B.
Lorsqu’un liquide s’est inf&& dans l’oromateur.
vi
C.
Lorsque l’ordinateur refuse de fonctionner normalement m&e en suivant les instructions. N’ajuster que les commandes qui sont
&mm&es
dans les instructions de fonctionnement. Tout ajustement inadequat de tout autre contr6le peut provoquer un dommage et siluvent nkessiter
des reparations &labor&s par un technicien qualifie afin de remettre I’appareil en service.
D.
Lorsqu’on a 6chappC l’ordinateur ou que l’on a endommage le boitier.
E.
Lorsque
l’ordinateur d&nor&e un changement note au niveau
de sa performance.

Contents

Introduction
VGA Utilities Optional Equipment
Memory Drives OverDrive Processor Alternate VGA Interface.
How to Use This Manual
Chapter 1
Turning On the Computer
Turning Off the Computer Using Disks and Disk Drives
How Disks Store Data Types of Diskette Drives Caring for Diskettes and Diskette Drives Write-protecting Diskettes Inserting and Removing Diskettes
Using a Single Diskette Drive System
Formatting Diskettes
Making Backup Copies
Using a Hard Disk Drive
Special Keys on the Keyboard Stopping a Command or Program Resetting the Computer Using a Password
Changing a Password
Deleting a Password
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Using Your computer
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2 3 3 3 3
3 4
1-2 1-5 1-5 1-6 1-7
1-10 1-12 1-14 1-16
1-17
1-17
1-18
1-20
1-21
1-22
1-23
1-24
1-25
vii
Using Your Computer as a Network Server
Using a Password in Network Server Mode
Changing the Processor Speed
Entering Keyboard Commands Using the ESPEED Program
Preparing the Hard Disk for Moving
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Using AUTOEXEC.BAT and Other Batch FiIes
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1-26 1-27 1-28
1-30 1-31 1-33
1-34
Chapter 2
How to Use This Chapter
Locating the Internal Components Removing the Cover Changing the Jumper Settings
Setting the Jumpers Memory Modules (SIMMs)
Inserting SIMMs
Removing SIMMS Installing an Option Card Removing an Option Card Removing the Option Card Connector Board Replacing the Option Card Connector Board Installing a New Processor Chip Using the Alternate VGA Interface Replacing the Cover Post-installation Procedures
Chapter 3
How to Use This Chapter Setting the Hard Disk Drive Jumpers
Where to Go Next
Installing a Hard Disk in the Vertical Bay
Removing the Mounting Frames Installing the Hard Disk Connecting the Cables
Installing and Removing Options
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Installing and Removing Drives
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2-2 2-3 2-4
2-6 2-8
2-9
2-11
2-13 2-14 2-18
2-19
2-20 2-21
2-22
2-24
2-25
3-3
3-4
3-4
3-5
3-6
3-8
3-12
viii
Removing a Hard Disk From the Vertical Ray
Installing a Drive in a Horizontal Bay
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Attaching Mounting Frames to a Hard Disk Installing the Drive. Connecting the Cables
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Removing a Drive From a Horizontal Ray
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3-15 3-17 3-19 3-20 3-24 3-29
Connecting the Hard Disk Drive Ribbon Cable to the System
Board
Post-installation Procedures
................................
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3-33 3-36
Chapter 4
Starting the Program
Deleting Tests Adding Tests
Running Tests
Resuming From an Error
System Diagnostic Tests Error Messages
Chapter 5
Starting the Program
Formatting a New Disk Reformatting a Used Disk selecting an Option Selecting a Drive
Option 1, Format
Modifying the Defective Track Table Formatting the Disk
Option 2, Destructive Surface Analysis Option 3, Nondestructive Surface Analysis Exiting the Program
Running System Diagnostics
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Formatting a Hard Disk
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4-2 4-3
4-4 4-5 4-6 4-7 4-8
5-2 5-3 5-3 5-3 5-4
5-4 5-6
5-8 5-9 5-10 5-11
Chapter 6
Troubleshooting
Identifying Your System Error Messages
...........................
The Computer Won’t Start
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The Computer Does Not Respond
Restoring the Power Supply
Password Problems
.........................
Accessing Your System Keyboard Problems Monitor Problems Diskette Problems
Diskette Drive Problems
Hard Disk Problems
Installing the Drive
Preparing the Drive
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Accessing Data on the Drive
Software Problems
Printer Problems Option Card Problems Mouse Problems
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Memory Module Problems
Appendix A Specifications
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6-1
6-2 6-5 6-6 6-8 6-9
6-10 6-11 6-12 6-13
6-15
6-16 6-17 6-18
6-18
6-19
6-20
6-22
6-23
6-23
CPU and Memory
Controllers
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Interfaces Mass Storage Keyboard
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Physical Characteristics Power Supply Environmental Requirements Power Source Requirements System Memory Map Extended VGA Modes Wingine Modes
X
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A-1 A-2 A-3 A-4 A4 A-5 A-5 A-6 A-7 A-8 A-9 A-10
Glossary
index
xi

Introduction

Your new Epson® computer is a fast, high-performance system offering flexibility and expandability in a compact design. It provides the following features:
486SX/33, 486DX2/50, or 486DX2/66 microprocessor 4MB of internal memory, expandable to 128MB
System and video BIOS shadow RAM 8KB of internal processor cache
VirtualCache™-the Epson proprietary memory
architecture which allows the system to use all its system memory as a virtual cache pool
Integrated VGA (video graphics array) controller with Wingine™ video technology developed by Chips and Technologies® for Microsoft®Windows®users
Math coprocessor built into the 486DX2/50 and 486DX2/66 microprocessor chips
Built-in VGA port Two built-in serial ports and one built-in parallel port Built-in IBM® PS/2™ compatible keyboard and mouse ports
Four 16-bit (or 8-bit) ISA option slots Support for up to three mass storage drives Password security.
Your computer’s video and memory features work together for enhanced performance. Incorporating Wingine technology, the advanced system architecture allows the CPU to communicate directly with the video memory, providing direct throughput from the system memory to the display. Combined with the speed and graphics capabilities of the Wingine VGA controller, this technology produces screen refresh rates that are ten times faster than standard super VGA systems and up to five times faster than systems that employ “local bus” technology.
Additionally, your computer can use all of its memory as a virtual cache pool. Unlike most systems that provide only a 64KB or 128KB cache buffer-which typically fills up with the first or second memory access
command-your computer uses all the RAM as a “virtual” cache buffer. You’ll notice the improved performance especially when running memory-consuming graphics programs such as Windows applications or CAD programs.
Using the built-in interfaces, you can connect your peripheral devices directly to the computer so you don’t have to install option cards. You can use the option slots to enhance your system with extra functions such as a modem card, network card, or additional interface ports.

VGA Utilities

Your computer comes with special MS-DOS
drivers and utilities for use with the integrated VGA interface. With these utilities, you can take advantage of extended VGA features such as high resolutions and 132 - column text mode when you run popular application programs. The Wingine controller works with the display drivers to provide sharp, clear resolutions of up to 1024 x 768 for the Windows environment. See the
VGA Utilities Guide
instructions.
2 Introduction
®
VGA device
for installation

Optional Equipment

You can easily upgrade your computer by installing additional memory and a wide variety of options, as described below.
(Installation instructions are provided in Chapters 2 and 3 of
this manual.)

Memory

By adding 1MB, 4MB, 16MB, or 64MB SIMMs (single inline memory modules) to the main system board, you can expand the computer’s memory up to 128MB.

Drives

Your system can support up to three internal mass storage devices, including hard disk drives, diskette drives, a tape drive, or a CD-ROM drive. As your storage needs expand, you
can install additional drives.

OverDrive Processor

If you have the 486SX/33 model, you can enhance your system by installing an Intel® OverDrive processor. This processor doubles the internal clock speed so your system runs much
faster.

Alternate VGA Interface

If you want to install a high-resolution graphics adapter card for additional graphics capabilities (such as 1280 x 1024 resolutions), you can connect it to the computer’s alternate VGA interface. This allows you to use the special graphics features on the adapter card while accessing the standard VGA
signals provided by your main system board.
introduction 3

How to Use This Manual

This manual contains the information you need to get the best results from your computer. You don’t have to read everything in this book; check the following summary.
Chapter 1 covers general operating procedures, such as turning the computer on and off, using disks and disk drives, entering a password, and changing the processor speed.
Chapter 2 describes how to remove and replace the computer’s
cover, change jumper settings, and install optional equipment
such as option cards and memory modules. Chapter 3 explains how to install and remove disk drives. Chapter 4 provides instructions for running system diagnostics. Chapter 5 gives the procedure for formatting a hard disk. Chapter 6 contains troubleshooting tips. Appendix A lists the specifications of your computer. At the end of this manual, you’ll find a Glossary and an Index.
Note
Please see the Setup Guide for instructions on setting up your system and running the SETUP program.
4 Introduction
Chapter 1
Using Your Computer
This chapter briefly describes the following operations:
0
Turning the computer on and off
0
Using disks and disk drives
0
Using special keys on the keyboard
0
Stopping a command or program
0
Resetting the computer
0
Using a password
0
Changing the processor speed
0
Preparing a hard disk for moving
0
Using AUTOEXEC.BAT and other batch files.
Using Your Computer
1-1
If you want basic information on turning the computer on and off, using your disk drives and keyboard, stopping commands, or resetting the computer, read the first five sections in this chapter.
If you are familiar with these aspects of operating a computer, you can skip to page 1-23 to learn about system operations specific to your computer, such as using a password and changing the processor speed.

Turning On the Computer

Before turning on your computer, check the following safety
rules to avoid accidentally damaging your computer or injuring
yourself: 0
Do not connect or disconnect any peripheral device cables
(including the mouse or keyboard) or power cables when
the computer’s power is on.
0
Never turn on the computer with a protective card in a
5.25-inch diskette drive.
0
Never turn off or reset your computer while a disk drive
light is on. This can destroy data stored on the disk
0
Always wait at least 20 seconds after you turn off the power before you turn it on again This prevents possible damage to the computer’s electrical circuitry.
0
Do not leave a beverage near your system. Spilled liquid can damage the circuitry of your equipment.
Follow these steps to turn on your system:
1.
Turn on the monitor, printer, and any other peripheral devices connected to the computer.
1-2
Using Your Computer
2.
If you do not have a hard disk, insert your main operating system diskette in drive A.
Note
If you do not have a hard disk, you need to insert the operating system diskette each time you turn on your system so the computer can copy the operating system to its memory. See your operating system manual for more information.
3. To turn on the computer, press the power button located on the right side of the front panel, as shown below.
power Indicator
power button
The power indicator lights up. After a few seconds, the computer displays a count of its system memory, and then performs its power-on diagnostics. This is a series of checks the computer runs each time you turn it on to make sure everything is working correctly. (If necessary, use the controls
on your monitor to adjust the screen display.)
Using Your Computer
1-3
Note
If you or your dealer has made a major change to your system, such as adding a disk drive, the computer may take a few minutes to complete power-on diagnostics the first time you turn it on.
When the system has successfully completed its diagnostics, you see the following prompt:
Press <DEL>
to atart
SETVP
Note
If your computer’s configuration does not match the
information stored in the computer’s CMOS RAM (defined
through the SETUP pro
a prompt to press the
am), you see an error message and
F1
25
key. Press [to continue.
Then run the SETUP program to correct the information.
(See Chapter 2 of the Setup Guide for instructions.)
If you do not want to run SETUP, ignore the prompt. After a
few seconds, the computer either loads the operating system
from the hard disk or the diskette in drive A or prompts you for the password (if you have set one). When you enter the correct password, the computer loads the operating system.
What happens next depends on how your computer is set up. If it is configured to automatically load a program (such as Microsoft Windows or a word processing program), you see the first menu or screen display of that program. If not, you may see the operating system prompt, such your application program manuals
for further instructions.
as C:\> Or A>.
See
1-4
Using Your Computer

Turning Off the Computer

Whenever you turn off your system, follow these steps:
1.
Save your data and exit any application program you are using.
2.
Check the hard
disk drive
light
and the diskette drive light(s)
to make sure they are not on. Do not turn off the computer
if a drive light is on, because you can damage the drive or lose data.
3.
Remove any diskette(s) from
the
diskette drive(s).
4. Press the power button to turn off the computer and then turn off any peripheral devices (monitor, printer, etc.).
Using Disks and Disk Drives
The disk drives in your computer allow you to store data on disk, and then retrieve and use your stored data. This section explains how disks work and tells you how to:
0
Use different types of diskettes and diskette drives
0
Care for your diskettes and diskette drives
0
Write-protect diskettes
Insert and remove diskettes
0
Use a single diskette drive system
0
Format diskettes
0
Make backup copies
0
Use a hard diskdrive.
0
Using Your Computer
1-5
Diskettes are made of flexible plastic coated with magnetic
material. This plastic is enclosed in a square jacket that is either
slightly flexible (5.25-inch diskette) or hard (3.5-inch diskette). Unlike a diskette, a hard disk is rigid and fixed in place. It is
sealed in a protective case to keep it free of dust and dirt. A hard disk stores data the same way that a diskette does, but it works much faster and has a much larger storage capacity.
All disks are divided into data storage compartments by sides, tracks, and sectors. Double-sided diskettes store data on both sides. On each side are concentric rings, called tracks, on which
a disk can store data.
A disk is further divided by sectors, which can be visualized as pie slices. The illustration below provides a simple representation of tracks and sectors.
1-6
Using Your Computer
Double-sided, double&n&y diskettes have either 40 or 80 tracks on each side, and double-sided, high-density diskettes have 80 tracks on each side. Diskettes can have 8,9,15, or 18 sectors per track.
A hard disk consists of two or more platters stacked on top of one another and thus has four or more sides. In addition, a hard disk has many more tracks per side than a diskette, but the number of tracks depends on the capacity of the hard disk. The number of sectors depends on the type of hard disk.
Your computer uses the read/write heads in a disk drive to store and retrieve data on a disk. To write to a disk, the computer spins it to the position under the read/write head
where the data is to be written A diskette has an exposed area
where the read/write head can access it. Because data is stored magnetically, you can retrieve it, record
over it, and erase it just as you play, record, and erase music on a cassette tape.

Types of Diskette Drives

The following list describes the four types of diskette drives you can use in your computer and which diskettes to use with therm
0
l.44MB drive-Use 3.5-inch, double-sided, high-density, 135 TPI (tracks per inch), l.44MB diskettes. These diskettes contain 80 tracks per side, 18 sectors per track, and hold up to 1.44MB of information (approximately 600 pages of text).
Note
MB stands for megabyte, which equals 1024KB (or 1,048,576 bytes). KB stands for kilobyte, which equals 1024 bytes. Each byte represents a single character, such as A, $, or 3.
Using Your Computer
1-7
cl
1.2MB drive-Use 5.25-inch, double-sided, highdensity, 96 TPI, 1.2MB diskettes. These diskettes contain 80 tracks per side, 15 sectors per track, and hold up to 1.2MB of information (approximately 500 pages of text).
0
720KB drive--Use 3.5-inch, double-sided, doubledensity, 135 TPI, 720KB diskettes. These diskettes contain 80 tracks per side, 9 sectors per track, and hold up to 720KB of information (approximately 300 pages of text).
0
360KB drive-use 5.25-inch, double-sided, double-density, 48 TPI, 360KB diskettes. (You can also use single-sided, 160KB or 180KB diskettes.) These diskettes contain 40 tracks per side and 8 or 9 sectors per track. With 8 sectors per track, a diskette holds up to 320KB. With 9 sectors per track, a diskette holds up to 360KB of information (approximately 150 pages of text).
Note
You must format a new diskette before you can store data on it. See “Formatting Diskettes,” later in this section.
Drive and diskette incompatibilities
If your computer has more than one type of diskette drive, or if
you use different types of diskettes, you need to be aware of
certain incompatibilities between the drives and diskettes.
Because of the type and size differences, you cannot use a
3.5-inch diskette in a 5.25-inch drive or vice versa. There are
also limitations on using diskettes that are the same size as the
drive but have different capacities. The following tables
summarize the possibilities and limitations.
1-8
Using Your Computer
3.5-inch drive/diskette compatibility
Drive type 720KB
1.44MB
5.25-inch drive/diskette compatibility Drive type
360KB
1.2MB
*
If you write to this diskette in a 1.2MB drive, you may not be able to read it or write to it in a 360KB drive later.
Diskette types It can read from and write to 720KB
1.44MB, 720KB
Diskette types it can read from and write to 360KB, 320KB, 180KB, 160KB
1.2MB, 360KB,* 320,* 180KB,* 160KB*
Because of possible incompatibilities, always indicate the diskette type and density when you label your diskettes. (Usually this information appears on the manufacturer’s label.)
Note
If you want to format a 720KB diskette in a 1.44MB drive or format a 360KB diskette in a 1.2MB drive, make sure you include the correct parameter in your format command. See your operating system manual for instructions.
If you have any combination of the above drives (1.44MB,
1.2MB, 720KB, or 360KB) and you are using MS-DOS, you can copy files from one drive to another-using COPY or XCOPY- as long as the correct diskette type is in each drive. You can also use these commands to copy files between a hard disk and any type of diskette. However, you cannot use the MS-DOS DISKCOPY command to copy from one diskette drive to another if the two drives are not the same type. For more about copying files and diskettes, see your MS-DOS or other operating system manuals.
Using Your Computer
1-9

Caring for Diskettes and Diskette Drives

Follow these basic precautions to protect your diskettes and avoid losing data:
0
Remove all diskettes before you turn off the computer.
If you have a diskette that contains data you don’t want to accidentally write over or erase, be sure you write-protect it. This is especially important for your operating system and application program diskettes. See ‘Write protecting Diskettes,” below, for more details.
0
Do not remove a diskette from the diskette drive or reset or turn off the computer while the drive light is on. This light indicates that the computer is copying data to or from a diskette. If you interrupt this process, you can destroy data.
0
1-10
Keep diskettes in a
Don’t
leave them sitting in the sun or in
moderate
environment.
extreme cold or heat because this can destroy the data.
Keep diskettes
away
from dust and dirt. Small particles of dust or dirt can scratch the magnetic surface, destroy data, and ruin the read/write heads in a diskette drive.
Keep diskettes away from magnetic fields, such as those generated by electrical appliances, telephones, and loudspeakers. (Diskettes store information magnetically.)
Using Your Computer
0
Do not place diskettes on top of your monitor or near an external hard disk drive.
Always hold a 5.25-inch diskette by its protective jacket and never touch the magnetic surface (exposed by the read/write slot). The oils on your fingertips can damage it.
0
Never wipe, brush, or try to clean diskettes in any way.
Write on a diskette label before you attach it to
the diskette. If you need to write on a label that is already on the diskette, use only a soft-tip pen-not a ballpoint pen or a pencil.
0
Carefully label your diskettes and indicate the type and
density. Do not stick several labels on top of one another; this can make it difficult to insert and remove the diskette
in the drive.
Store diskettes in their protective envelopes and in a proper location, such as a diskette container. Do not store diskettes flat or stack them on top of each other.
0
Do not place anything on top of your diskettes, and be sure they do not get bent.
Using Your Computer
1-11

Write-protecting Diskettes

You can write-protect a diskette to prevent its data from being altered. When a diskette is write-protected, you can read it and copy data from it, but you cannot store new data on it or delete any files it contains.
On a 3.5-inch diskette, the write-protect device is a small switch
on the back of the diskette in the lower right corner, shown below. To write-protect a 3.5-inch diskette, slide the switch toward the edge of the diskette until it clicks into position, exposing a hole in the comer.
-
switch
To remove the write protection, slide the switch toward the center of the diskette until it clicks into position and the hole is covered
Note
A high-density 3.5-inch diskette has an additional hole on the opposite side. This hole does not affect the write­protection.
1-32
Using Your Computer
To write-protect a 5.25-inch diskette, cover the small,
rectangular notch (shown below) with an adhesive write-protect tab. Write-protect tabs usually are included in a new package of blank 5.25-inch diskettes.
-
notch
TO remove the write protection, peel off the write-protect tab.
Using
Your Computer
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Insetting and Removing Diskettes

To insert a diskette into a 3.5-inch drive, hold the diskette with the label facing up and the metal shutter leading into the drive, as shown in the following illustration. Slide the diskette into the drive until it clicks into place.
release button
metal shutter
When you want to remove the diskette, make sure the drive light is off; then press the release button. When the diskette pops out, remove it and store it properly.
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Using Your Computer
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