This equipment generates and uses radio frequency energy and if it is not installed
and used properly, that is, in strict accordance with the manufacturer’s instructions, it
may cause interference to radio and television reception. It has been type tested and
found to comply with the limits for a Class B computing device in accordance with
the specifications in Subpart B of Part 15 of FCC rules, which are designed to provide
reasonable protection against such interference in a residential installation. However,
there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause interference to radio and television reception, which can
be determined by turning the equipment off and on, you are encouraged to try to
correct the interference by one or more of the following measures:
.
Reorient the receiving antenna
l Relocate the computer with respect to the receiver
l Move the computer away from the receiver
l Plug the computer into a different outlet so that the computer and receiver are
on different branch circuits.
If necessary, consult your dealer or an experienced radio/television technician for
additional suggestions. You may find the following booklet prepared by the Federal
Communications Commission helpful:
“Television Interference Handbook”
This booklet is available from the U.S. Government Printing Office, Washington DC
20402. Stock No. 004-000-00450-7
Note: If the interference stops, it was probably caused by the computer or its
peripheral devices. To further isolate the problem:
Disconnect the peripheral devices and their input/output cables one at a time. If the
interference stops, it is caused by either the peripheral device or its I/O cable. These
devices usually require shielded I/O cables. For Epson peripheral devices, you can
obtain the proper shielded cable from your dealer. For non-Epson peripheral devices,
contact the manufacturer or dealer for assistance.
WARNING: This equipment has been certified to comply with the limits for a
Class B computer device, pursuant to Subpart B of Part 15 of FCC Rules. Only
peripherals (computer input/output devices, terminals, printers, etc.) certified to
comply with the Class B limits may be attached to this computer. Operation with
noncertified peripherals is likely to result in interference to radio and TV
reception.
The connection of a nonshielded equipment interface cable to this equipment will
invalidate the FCC Certification of this device and may cause interference levels
that exceed the limits established by the FCC for this equipment.
DOC COMPLIANCE STATEMENT FOR CANADIAN USERS
This digital apparatus does not exceed the Class B limits for radio noise emissions
from digital apparatus as set out in the radio interference regulations of the Canadian
Department of Communications.
Conformation 6
Le
present
limites
appareil
applicables aux appareils numeriques de
sur le brouillage
Les
Normes
d’Emission
numeriquen’emet
radioelectriquesedict6
RadioelectriquesCanadiennes
pas de bruits
radioelectriques
ClasseB
par le Minis&e des
prescrites dans le
depassant les
Communications du
reglement
Canada.
®
EPSON
EQUITY™LT
User’s Guide
TM
-386SX
IMPORTANT NOTICE
DISCLAIMER OF WARRANTY
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
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system, or transmitted, in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without the prior written permission of Epson
America, Inc. No patent liability is assumed with respect to the use of information
contained herein. While every precaution has been taken in the preparation of this
publication, Epson America assumes no responsibility for errors or omissions. Nor is
any liability assumed for damages resulting from the use of the information contained
herein. Further, this publication and features described herein are subject to change
without notice.
TRADEMARKS
AT and XT are trademarks and IBM is a registered trademark of International
Business Machines Corporation.
Centronics is a registered trademark of Centronics Data Corporation.
Epson is a registered trademark of Seiko Epson Corporation.
Equity and LT are trademarks of Epson America, Inc.
GW-BASIC, Microsoft, Microsoft Word, Microsoft Windows/386, and
MS-DOS are trademarks and registered trademarks of Microsoft Corporation.
Hayes is a registered trademark of Hayes Microcomputer Products, Inc.
Intel is a registered trademark of Intel Corporation.
Lotus and 1-2-3 are registered trademarks of Lotus Development Corporation,
Copyright 0 1990 by Epson America, Inc.
Torrance, California
ii
9100-0005-001
IMPORTANT SAFETY
INSTRUCTIONS
1.
Read all of these instructions and save them for later reference.
2.Follow all warnings and instructions marked on the product.
3.Unplug this product from the wall outlet before cleaning. Do not use
liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.
4.Do not use this product near water.
5.
Do not place this product on an unstable cart, stand, or table. The
product may fall, causing serious damage to the product.
6.Slots and openings in the cabinet and the back or bottom are provided
for ventilation; to ensure reliable operation of the product and to protect
it from overheating, these openings must not be blocked or covered.
The openings should never be blocked by placing the product on a bed,
sofa, rug, or other similar surface. This product should never be placed
near or over a radiator or heat register. This product should not be
placed in a built-in installation unless proper ventilation is provided.
7.This product should be operated from the type of power source indicated
on the marking label. If you are not sure of the type of power available,
consult your dealer or local power company.
8.This product is equipped with a three-wire grounding-type plug, a plug
having a third (grounding) pin. This plug will only fit into a grounding
type power outlet. This is a safety feature. If you are unable to insert the
plug into the outlet, contact your electrician to replace your obsolete
outlet. Do not defeat the purpose of the grounding type plug.
9.Do not locate this product where the cord will be walked on.
10.
If an extension cord is used with this product, make sure that the total of
the ampere ratings on the products plugged into the extension cord do
not exceed the extension cord ampere rating. Also, make sure that the
total of all products plugged into the wall outlet does not exceed 15
amperes.
11.
Never push objects of any kind into this product through cabinet slots,
as they may touch dangerous voltage points or short out parts that could
result in a risk of fire or electric shock. Never spill liquid of any kind on
the product.
12.
Except as specifically explained in the User’s Guide, do not attempt to
service this product yourself. Opening or removing those covers that are
marked “Do Not Remove” may expose you to dangerous voltage points
or other risks. Refer all servicing in those compartments to service
personnel.
13.
Unplug this product from the wall outlet and refer servicing to qualified
service personnel under the following conditions:
A. When the power cord or plug is damaged or frayed.
B.
If liquid has been spilled into the product.
C.
If the product has been exposed to rain or water.
D.
If the product does not operate normally when you follow the
operating instructions. Adjust only those controls that are covered
by the operating instructions, since improper adjustment of other
controls may result in damage and will often require extensive work
by a qualified technician to restore the product to normal operation.
E.
If the product has been dropped or the cabinet has been
damaged.
F.
If the product exhibits a distinct change in performance,
indicating a need for service.
Connecting the Battery Pack.
Status Indicator Bar
Opening and Closing the Screen
Using the Handle
Selecting Execution Speed
Selecting LCD Screen Contrast
Changing the Gray Scale Pattern for Any Color.
Special Keys on the Equity LT-386SX Keyboard.
Using Diskettes
.....................................
How Diskettes Work
Choosing Diskettes for the Equity LT-386SX
Caring for Diskettes
Inserting and Removing Diskettes
Making Backup Copies.
Write-Protecting Diskettes.
Using the Hard Disk Drive
Caring for the Hard Disk
Protecting the Data on Your Hard Disk.
Improving Hard Disk Performance
Turning Off the Hard Disk.
Modifying the AUTOEXEC.BAT File
Resetting the Computer
Turning Off the Computer
...............................
...................................
.....................
..................................
.......................
...................................
............................
........................
..........
..........
............................
.........
.............................
..................
..........................
.......................
............................
.........................
.............
.................
.......................
..............
..............................
............................
2-1
2-2
2-4
2-7
2-9
2-10
2-11
2-11
2-12
2-16
2-18
2-19
2-19
2-20
2-22
2-23
2-23
2-24
2-24
2-25
2-25
2-26
2-26
2-28
2-29
Chapter 3
Starting and Exiting MS-DOS
Changing the Current Drive.
Using MS-DOS With Your Computer
.........................
..........................
The MS-DOS Command Format.
Entering MS-DOS Commands.
Storing Data
.......................................
........................
vi
......................
3-2
3-2
3-4
3-5
3-5
Using Directories.
The Current Directory
...................................
...........................
Listing the Contents of a Directory
Using Pathnames
Creating Directories
Changing Directories
...............................
.............................
............................
Copying From One Directory to Another.
Deleting a Directory
Formatting Diskettes
Formatting a 1.44MB Diskette
Formatting a 720KB Diskette
Copying Data
.......................................
Using DISKCOPY
Using COPY
...................................
Using BACKUP
Deleting Data
......................................
Using the MS-DOS Shell Program.
Using HELP.
Using MENU
.......................................
.......................................
MENU Utility Options
Using an AUTOEXEC.BAT File
.............................
.................................
.....................
......................
..............................
................................
.....................
..........................
.......................
Creating an AUTOEXEC.BAT File
Starting an Application Program
Using Memory Beyond 640KB
About EMM386.SYS
.......................
.........................
............................
.................
...........
................
3-6
3-8
3-9
3-10
3-11
3-12
3-13
3-14
3-14
3-15
3-16
3-17
3-18
3-20
3-22
3-24
3-24
3-25
3-27
3-28
3-29
3-30
3-31
3-31
3-33
Chapter 4
Troubleshooting
The Computer Won’t Start
The LCD Screen Is Blank.
............................
The Monitor Screen Is Blank
The Computer Locks Up
Diskette Problems
...................................
Diskette Drive Problems
Hard Disk Problems.
.............................
..............................
.................................
...........................
..........................
4-1
4-2
4-3
4-4
4-4
4-5
4-6
vii
Appendix A
DIP Switches
Setting the DIP Switches
Accessing the DIP Switches.
Replacing the Expansion Card Cover
Appendix B
Installing Options
Connecting an External Color Monitor.
Connecting an External Diskette Drive
Installing the Internal Modem
Installing the RAM Card
Connecting an External Keyboard
Installing an Option Card.
Installing a Math Coprocessor
Appendix C
Main Unit
Interfaces
Keyboard
.........................................
..........................................
..........................................
Mass Storage
Display
............................................
Power Supply
Specifications
.......................................
.......................................
Power Requirements
Physical Dimensions
Environmental Requirements.
Adding the Driver After OS/2 Is Installed. . . . . . . . . . . . . . . .
X
E-2
Appendix F
Using Other Reference Diskette Utilities
Using Microsoft Windows/386
.........................
Using Microsoft Windows, Version 3.0
Using VGARAM
Using SCROLL.
...................................
....................................
Glossary
Index
..................
F-1
F-3
F-4
F-5
xi
Introduction
Your Epson®’ Equity LT-386SX portable computer is a
compact, high-performance system you can use just about
anywhere: at the office, at home, or on the road. Its
rechargeable battery lets you use it in remote locations when
you don’t have access to an electrical outlet. With the AC
adapter connected, you can use the computer as long as you like
and recharge the battery in the process.
The Equity LT-386SX comes with the following:
CI
An 80386SX microprocessor
c3
2MB (megabytes) of internal RAM memory
QOne 1.44MB, 3
D
A high-contrast, paper-white, backlit LCD (liquid crystal
display) screen
CI
A slot for a 2MB RAM card
CI
An internal, proprietary modem slot
Ll
A
$size,
expansion slot
LI
A high-capacity battery pack to power the LT-386SX,
rubber pads for the battery pack, and installation
instructions
Ci
Built-in interfaces for serial, parallel, video, external
diskette drive, and external keyboard connectors
QAn AC adapter and power cord.
IBM®PC AT’“-compatible, 8/16-bit internal
‘/z-inch
diskette drive
Introduction 1
The 80386SX microprocessor inside your Equity LT-386SX can
run at an execution speed of 16 MHz or 8 MHz. Ordinarily,
you’ll want to use the 16 MHz speed to get faster performance
from your computer. A few application programs may require
8 MHz, and the 8 MHz speed consumes less energy, if you want
to conserve battery life.
You can establish the default execution speed in the SETUP
program, which you can run when you turn on or reset the
computer. During operation, you can change the execution
speed by holding down the Ctrl key and pressing the left Shift
and F keys simultaneously.
The Equity LT-386SX
h
as
a built-in socket for an 80387SX
math coprocessor. This socket is easily accessible from the
bottom of the computer, so you can install the chip yourself.
Or, if you prefer, have an authorized Epson dealer or Customer
Care Center install the coprocessor for you.
The built-in serial and parallel interfaces allow you to attach
almost any peripheral device, such as an Epson printer or
external modem, to your Equity LT-386SX.
You can connect a VGA color monitor to the computer to take
advantage of the color and larger display. When you insert a
connector into the port labeled RGB VIDEO before turning on
the Equity LT-386SX, the computer automatically recognizes
the presence of an external monitor. The LT-386SX supports
VGA video monochrome and color modes.
You can also connect an Epson external 5 ‘/+inch diskette drive
to the computer to exchange data easily with other computers
that use 5 ‘/+inch diskette drives.
The following optional equipment is available from your Epson
dealer:
DA 16 MHz 80387SX math coprocessor
Cl
A 2400-baud, Hayes-compatible, auto-dial internal modem
Ci
An internal RAM memory card to expand memory to 4MB
Ci
An external 1.2MB, 5 ‘/+inch diskette drive
Cl
The GW-BASIC programming language
Cl
One or more 20MB or 40MB hard disk drives
CI
An additional battery pack
CI
An additional AC adapter
Cl
An adapter for an external, Epson keyboard
LI
Carrying case.
Your Equity LT-386SX comes with MS-DOS? version 4.01, by
Microsoft? MS-DOS 4.01 provides a Shell feature that lets you
run programs and choose operating system commands from
menus instead of the MS-DOS command prompt. Designed for
both new and experienced users of MS-DOS, the Shell program
lets you tailor your system to your own needs and manage your
programs and data more efficiently.
You’ll find the following MS-DOS manuals packed in the box
with the computer:
LI
MS-DOS Installation Guide-Use this manual to install
MS-DOS on your hard disk.
LI
MS-DOS Reference Manual-Use this manual to learn
about the features of MS-DOS and for a complete
description of each MS-DOS command.
Introduction 3
QMS-DOS Shell User’s Guide-Use this manual to learn
about the MS-DOS Shell feature.
Cl
MS-DOS Command Summary-Use this as a quick
reference when you need to check on the format of a
command.
In addition to MS-DOS, Epson has included two time-saving
utilities that make MS-DOS easier to use: HELP and MENU.
The HELP program lets you display information on the screen
about any MS-DOS command. MENU provides an easy way to
run some MS-DOS commands for routine operations, such as
file copying and disk management.
You can use any application program designed for the IBM
Personal Computer, PC XT: or PC AT on your Equity
LT-386SX. You may also want to use powerful 32bit softwaresuch as Microsoft Windows/386-with your computer.
In addition to the MS-DOS operating system, you can use
OS/2, version 1.1, if your computer has a hard disk. Among
other capabilities, OS/2 provides multitasking, dual-mode
processing, and on-line help.
4 Introduction
How To Use This Manual
This manual explains how to set up and care for your Equity
LT-386SX. It also describes how to use your computer and run
diagnostic checks.
The eight steps in Chapter 1 explain how to set up your
computer and prepare it for use. On the inside back cover is a
foldout with illustrations of the LT-386SX; you may want to
refer to these illustrations while you set up the computer.
Chapter 2 describes general operating procedures for your
computer and explains how to use and care for your disks and
disk drives.
Chapter 3 provides basic instructions for using MS-DOS with
your computer. You can find more detailed information about
MS-DOS in the MS-DOS manuals.
Chapter 4 provides troubleshooting guidelines you can follow if
you encounter any problems while using your Equity LT-386SX.
Appendix A describes the DIP switches you may need to
change if you modify your system’s configuration.
Appendix B explains how to attach options, such as an external
color monitor, external diskette drive, or keyboard to your
Equity LT-386SX and how to install the Epson internal modem,
the Epson RAM card, an option card, or a math coprocessor. To
install other options, see the instructions that come with the
option. For dealer-installed options, contact an authorized
Epson dealer or Customer Care Center. (See the next section,
“Where To Get Help,” for details.)
Appendix C lists the Equity LT-386SX hardware specifications.
Appendix D describes the Equity LT-386SX system diagnostics.
Introduction 5
Appendix E explains how to install the LCD video driver for
OS/2.
Appendix F explains how to install other utilities on the
Reference diskette, including the LCD VGA video driver for
Microsoft Windows/386.
At the back of the manual is a glossary of computer terms.
Where To Get Help
Customer support and service for Epson products is provided by
a network of authorized Epson dealers and Customer Care
Centers throughout the United States. Epson America provides
product information and support to its dealers and Customer
Care Centers.
Therefore, we ask that you contact the business where you
purchased your Epson product to request assistance. If the
people there do not have the answer to your question, they can
obtain it through our dealer support program.
Epson is confident that this policy will provide you with the
assistance you need.
Call the Epson Consumer Information Center at
1-800-922-8911 for the following:
DThe location of the nearest Epson dealer
0
The location of the nearest Customer Care Center
LI
Information on Epson User Groups.
To locate or purchase accessories or supplies, contact your
nearest Epson dealer or call 1-800-873-7766.
6 Introduction
Chapter 1
Setting Up Your System
Setting up your Epson Equity LT-386SX portable computer is
easy. Just follow the steps in this chapter. They describe how to
attach the hard disk, connect a printer, and attach the AC
adapter and power cord that come with your Equity LT-386SX.
After assembling these parts, you start the computer and run
the system SETUP program. Then turn to Chapter 2 for
information about using the computer.
The LT-386SX has one set of DIP switches that provide the
computer with information about its configuration each time
you turn it on. The DIP switches are located on the bottom of
the computer.
When the LT-386SX is shipped from the factory, the DIP
switches are set for the following type of system:
0
The internal diskette drive is drive A
0
If an external drive is attached, it is drive B
0
The primary display is a color display
LI
The RS232C port is the primary serial port
Ci
The PRINTER port is the primary parallel port.
Setting Up Your System
1-1
The standard DIP switch settings are appropriate whether your
computer uses the LCD or an external color monitor and
whether your computer uses only the internal diskette drive or
also uses a hard disk drive and an external diskette drive.
If you plan to keep this standard setup, continue with the
instructions in this chapter.
If your system does not match this configuration, you need to
change the appropriate switches as described in Appendix A
before you begin. If you plan to modify your computer by
attaching an external monitor or diskette drive, see Appendix B
for instructions.
Do not turn on the computer, printer, or any peripherals until
the instructions tell you to do so. Otherwise, you may damage
some part of your equipment.
Unpacking
1
As you unpack the components,
anything is missing or damaged,
be sure to inspect each item. If
consult your Epson dealer.
1-2
Setting Up Your System
In addition to this manual, you should have the following items:
Cl
The main unit
Cl
The battery pack
Ci
The AC adapter
LI
The power cord
Cl
The hard disk drive (if purchased)
Ci
The Equity LT-386SX Reference diskette
CI
The three MS-DOS diskettes: Install, Operating, and Shell
You’ll also find a registration card with the main unit. Fill out
this card now and mail it to Epson. With your registration card
on file, Epson can send you update information.
Please keep a copy of your sales receipt for warranty verification.
Your receipt is all that is required for warranty service.
Be sure to keep your packing materials. They provide the best
protection for your computer if you need to ship it later.
Setting Up Your System
1-3
Installing the Hard Disk Drive
2
The computer comes with an empty hard disk box installed in
the main unit. Your hard disk drive, which may be either 20MB
or 40MB, comes in its own package.
Your dealer may have installed the hard disk. If the hard disk
drive is installed, you can skip this step. If your dealer has not
installed the hard disk, your computer contains a box with a
label that says, “This box is empty!“.
You install the hard disk drive above the keyboard panel on the
computer. To access the slot for the hard disk drive, open the
screen by pressing the latch release button in the center of the
computer. Then lift the screen up and back.
Follow these steps to install the hard disk drive:
1.
Unwrap the hard disk drive.
1-4
Setting Up Your System
To remove the empty hard disk box, press in on the PUSH
2.
button. When the box releases, lift it straight up and out.
Store the empty hard disk box with your other packing
materials.
Face the front of the computer and hold the hard disk drive
3.
with the PUSH button on the left and the retractable tabs
on the right.
Setting Up Your System
1-5
4.
Position the hard disk drive directly above the hard disk
drive slot on the computer.
The connectors on the hard disk drive fit into the sockets
on the computer.
1-6
5.
Keep the hard disk drive level and lower it straight down
into the slot. If you lower either side first, the connectors do
not fit into the sockets.
Setting Up Your System
6.
Press firmly (but carefully) on the hard disk drive until it
snaps into place.
A new hard disk drive must be partitioned and formatted to run
an operating system. The MS-DOS installation program, called
SELECT, performs these functions. See your MS-DOS
Installation Guide for instructions after you complete the
remaining steps in this chapter.
Connecting a Printer
3
The Equity LT-386SX has both parallel and serial interfaces
(ports). You can easily connect a printer or plotter that has
either type of interface. Just follow the instructions below. Of
course, Epson offers a full range of printer products; consult your
Epson dealer for more information.
Setting Up Your System
1-7
Using the Parallel Interface
The computer’s Centronics-compatible parallel interface
provides a 25-pin, D-shaped female connector. Most Epson
printers have parallel interfaces. To connect a printer to the
computer, you need an IBM PC-compatible printer cable. If
you’re not sure which one you need, consult your Epson dealer.
Once you have a printer cable, follow these steps to connect
your printer to the parallel interface labeled PRINTER on the
computer:
1.
Place the printer next to your computer.
2.
Before you connect the printer, make sure the power
switches on the computer and printer are off. (The power
switch for your computer is located on the right side of the
machine).
3.
Press down on the release tab to open the computer’s
interface cover, as shown below.
4.
One end of the printer cable has a 25-pin, D-shaped male
connector. (See your printer manual if you cannot identify
this connector.) Connect this end to the parallel connector
1-8Setting Up Your System
release tab
labeled PRINTER on the right side of the computer, as
shown below. If the plug has retaining screws, tighten them
by hand or with a screwdriver.
5.
Connect the other end of the cable to the printer as shown
in the following illustration. To secure the cable, squeeze
the clips at each side of the printer connector and push
them into place.
Setting Up Your System
1-9
6.
Plug the printer’s power cable into an electrical outlet.
The standard DIP switch settings for the LT-386SX define your
PRINTER port as the primary parallel port. If you think the DIP
switch settings have been changed or you would like a different
setting, see Appendix A.
Using the Serial Interface
If you have a printer or other peripheral device that uses a serial
interface, connect it to the serial interface labeled RS232C on
the right side of the computer.
serial port
The Equity LT-386SX uses an IBM PC AT-compatible, 9-pin,
D-shaped male connector, so be sure you have a compatible
cable or an adapting cable that converts the 9-pin output to the
standard 25-pin output. To connect a serial device, follow the
same steps as above for connecting a parallel device.
1-10
Setting Up Your System
Make sure the serial port is set up to function properly. If you
are using the port for a serial printer, you must also redirect
printer output from the parallel port to the serial port. Use the
MS-DOS MODE command (or the Epson MENU program) to
make these changes. See your MS-DOS Reference Manual for
instructions.
The standard DIP switch settings for the LT-386SX define your
RS232C port as the primary serial port. If you think the DIP
switch settings have been changed or you would like a different
setting, see Appendix A.
Connecting the AC Adapter
4
Follow these steps to connect the AC adapter:
1.
Make sure the computer’s power switch (located on the
right side of the computer) is turned off.
2.
Turn the computer around so the back panel is facing you.
Position the back panel slightly over the edge of the desk or
table.
Setting Up Your System
1-11
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