Epson LT-386SX User Manual

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EQUITY™LT™-386SX User’s Guide

EPSON

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

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EPSON

EQUITY™LT

User’s Guide

-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,

Torrance, California

9100-0005-001

IMPORTANT SAFETY

INSTRUCTIONS

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.

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.

If the product has been exposed to rain or water.

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.

If the product has been dropped or the cabinet has been damaged.

If the product exhibits a distinct change in performance, indicating a need for service.

Introduction

How To Use This Manual. . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Where To Get Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 1

1 Unpacking 2 Installing the Hard Disk Drive. 3 Connecting a Printer

Using the Parallel Interface

Using the Serial Interface 4 Connecting the AC Adapter. 5 Connecting the Power Cord 6 Starting the System

Turning On the Computer

Adjusting Screen Contrast and Brightness

Initial Screen Display

7 Running the SETUP Program

Starting the SETUP Program

Setting the Date

Setting the Diskette Drive(s)

Setting the Hard Disk Drive

Setting the Primary Display

Setting the Keyboard

Setting the Scratch RAM Option Setting the CPU Clock Setting Setting the Shadow RAM

Setting the Standby Mode

Setting the LCD Contrast

Saving Your Settings

8 Inserting the Install Diskette

Setting Up Your System

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1-2 1-4 1-7

1-8 1-10 1-11 1-14 1-15 1-15 1-17 1-18 1-18

1-19 1-20 1-21 1-21 1-22 1-22 1-23 1-23 1-23 1-24 1-24 1-25

1-26

Chapter 2

Using the Equity LT-386SX

Using the AC Adapter

Using the Battery

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

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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

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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

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The MS-DOS Command Format.

Entering MS-DOS Commands. Storing Data

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3-2 3-2

3-4 3-5 3-5

Using Directories.

The Current Directory

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Listing the Contents of a Directory Using Pathnames Creating Directories Changing Directories

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Copying From One Directory to Another. Deleting a Directory

Formatting Diskettes

Formatting a 1.44MB Diskette Formatting a 720KB Diskette

Copying Data

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Using DISKCOPY Using COPY

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Using BACKUP

Deleting Data

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Using the MS-DOS Shell Program. Using HELP. Using MENU

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MENU Utility Options

Using an AUTOEXEC.BAT File

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Creating an AUTOEXEC.BAT File

Starting an Application Program

Using Memory Beyond 640KB

About EMM386.SYS

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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.

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The Monitor Screen Is Blank The Computer Locks Up Diskette Problems

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Diskette Drive Problems

Hard Disk Problems.

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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

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Mass Storage Display

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Power Supply

Specifications

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Power Requirements Physical Dimensions Environmental Requirements.

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Options.. .........................................

A-2 A-7

B-1 B-3 B-4 B-5

B-6 B-7 B-13

C-1

C-1 C-2 C-2 C-2 C-3 C-3

C-3 C-4 C-4

Appendix D Starting the Diagnostics Program

Creating a Database The Main Menu Screen Selecting Diagnostics Tests.

viii

System Diagnostics

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D-2 D-2 D-4 D-6

Setting the Run Time Parameters

Timebound Testing Continuous Testing Passbound Testing

Error Logging Executing Diagnostics Tests in Batch Mode Running the Tests System Board Diagnostics.

Basic Functionality Test.

CPU Protected Mode Test.

Processor Speed Test Coprocessor Test. DMA Controller Test. Interrupt Controller Test Timer Test RTC Test CMOS Validity Test

Memory Diagnostics

BIOS ROM Test Parity Test Pattern Test Walking 1’s Test.

Walking 0’s Test.

Address Test Refresh Test

Hard Disk Diagnostics.

Hard Disk Parameters.

Hard Disk Format

Auto Interleave

Media Analysis Performance Test Seek Test

Read/Verify Test.

Check Test Cylinder Force Bad Tracks Hard Disk Error Messages.

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D-7 D-9

D-9

D-10 D-12 D-12 D-13 D-13 D-13

D-14 D-14 D-14 D-15 D-15 D-16

D-16 D-17 D-18 D-18 D-18 D-19 D-19

D-19 D-20 D-20 D-21 D-24 D-25 D-26 D-27 D-28 D-28 D-29 D-29 D-30

Floppy Disk Diagnostics

Diskette Format Drive Speed Test Random R/W Test Sequential R/W Test Disk Change Line Test. Floppy Disk Error Messages

Keyboard Diagnostics

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Controller Test. ................................

Scan/ASCII Code Test Keyboard Clock Line Test Keyboard Data Line Test

Video Diagnostics

Adapter Test.

Attribute Test.

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80x25 Display Test.

40x25 Display Test.

320x200 Graphics Test

640x200 Graphics Test Page Selection Test Color Test.

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640x350 Graphics Test 640x480 Graphics Test

Video Error Message.

Miscellaneous Diagnostics

Printer Adapter Test Communication Adapter Test.

Keyboard Scan/ASCII Codes

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D-31 D-32 D-32 D-32 D-33 D-33

D-33 D-34 D-35 D-35 D-35 D-35 D-36 D-36 D-36 D-36

D-37 D-37 D-37 D-37 D-37 D-37 D-38 D-38 D-38 D-38 D-39 D-41

Appendix E Using OS/2

Adding the Driver After OS/2 Is Installed. . . . . . . . . . . . . . . .

E-2

Appendix F

Using Other Reference Diskette Utilities

Using Microsoft Windows/386

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Using Microsoft Windows, Version 3.0 Using VGARAM Using SCROLL.

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Glossary

Index

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F-1 F-3 F-4

F-5

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:

An 80386SX microprocessor

2MB (megabytes) of internal RAM memory

Q One 1.44MB, 3 D

A high-contrast, paper-white, backlit LCD (liquid crystal

display) screen

A slot for a 2MB RAM card

An internal, proprietary modem slot

$size,

expansion slot

A high-capacity battery pack to power the LT-386SX,

rubber pads for the battery pack, and installation

instructions

Built-in interfaces for serial, parallel, video, external

diskette drive, and external keyboard connectors

Q An 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

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:

D A 16 MHz 80387SX math coprocessor

A 2400-baud, Hayes-compatible, auto-dial internal modem

An internal RAM memory card to expand memory to 4MB

An external 1.2MB, 5 ‘/+inch diskette drive

The GW-BASIC programming language

One or more 20MB or 40MB hard disk drives

An additional battery pack

An additional AC adapter

An adapter for an external, Epson keyboard

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:

MS-DOS Installation Guide-Use this manual to install MS-DOS on your hard disk.

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

Q MS-DOS Shell User’s Guide-Use this manual to learn

about the MS-DOS Shell feature.

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:

D The location of the nearest Epson dealer 0

The location of the nearest Customer Care Center

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:

The internal diskette drive is drive A

If an external drive is attached, it is drive B

The primary display is a color display

The RS232C port is the primary serial port

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

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:

The main unit

The battery pack

The AC adapter

The power cord

The hard disk drive (if purchased)

The Equity LT-386SX Reference diskette

The three MS-DOS diskettes: Install, Operating, and Shell

The MS-DOS manuals: MS-DOS Installation Guide, MS-DOS Reference Manual, MS-DOS Shell User’s Guide, MS-DOS Command Summary.

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

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:

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

with the PUSH button on the left and the retractable tabs on the right.

Setting Up Your System

1-5

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

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

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

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:

Place the printer next to your computer.

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).

Press down on the release tab to open the computer’s

interface cover, as shown below.

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

1-8 Setting 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.

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

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.

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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

Follow these steps to connect the AC adapter:

Make sure the computer’s power switch (located on the right side of the computer) is turned off.

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

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