Epson Y16499100301 User Manual

EQUlTY™LT

User’s Guide

Y16499100301

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 3-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.

Y 16499100400

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 Manual, 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 the

operating instructions are followed. 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.

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

EPSON

Equity™ LT

User’s

Guide

IMPORTANT NOTICE

DISCLAIMER OF WARRANTY

Seiko Epson Corporation 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.

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 Seiko Epson Corporation, 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, Seiko Epson Corporation 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

Epson is a registered trademark of Seiko Epson Corporation. Equity is a trademark of Epson America, Inc. Centronics is a registered trademark of Centronics Data Computer Corp. IBM is a registered trademark and AT and XT are trademarks of International

Business Machines Corp. Microsoft, MS-DOS, and GW-BASIC are registered trademarks of Microsoft Corp. Hayes is a registered trademark of Hayes Microcomputer Products Inc. V30 is a trademark of NEC Corporation.

Y16499100301

User’s Guide

FCC COMPLIANCE STATEMENT

FOR AMERICAN USERS

This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, 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 J 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 or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

l 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, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user 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. 0044-000-00450-7.

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 computing device, pursuant to Subpart J 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 non-certified peripherals is likely to result in interference to radio and TV reception.

The connection of a non-shielded equipment interface cable to this equipment will invalidate the FCC Certification of this device and may cause interference levels which exceed the limits established by the FCC for this equipment.

User’s Guide

Introduction.

How to Use This Manual

Setting Up Your System

Unpacking.

Connecting the Screen

Connecting the AC Adapter.

Charging the Battery.

Connecting a Printer.

Parallel interface Serial interface

Setting the DIP Switches

Keyboard DIP switches. Back panel DIP switches

Turning On the Computer

Safety rules. Turning on the power Adjusting screen contrast and brightness Initial screen display

Loading MS-DOS

Copying System Diskettes

Copying with two diskette drives. Copying with one diskette drive

10 Running the Setup Program

Setting the real-time clock. Changing the backlight period) Changing the serial port (RS-232C) settings . 1-25 Leaving the Setup program.

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1-1

1-1 1-2 1-5 1-6

1-6 1-7

1-9 1-10 1-11 1-13 1-14 1-14 1-15 1-16 1-17 1-17 1-19 1-19

1-20 1-22 1-23 1-24

1-28

Preparing a Hard Disk for Use.

Creating the MS-DOS Partition Formatting the MS-DOS Partition Copying the Reference Files to the Hard Disk Booting From the Hard Disk Drive Assignments Hard Disk Power Switch

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Contents

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2-1

2-2

2-3

2-5

2-6

Using the Equity LT

Using the AC Adapter Using the Battery LED Indicators Opening and Closing the Screen. Using the Handle Selecting Execution Speed. Resetting the Computer. Caring for the Backlit Screen. Special Keys on the Equity LT Keyboard The Equity LT Character Set Using Disks and Disk Drives

How disks work Choosing diskettes for the Equity LT Caring for disks and disk drives Inserting and removing diskettes. Making backup copies. Write-protecting diskettes Using a single diskette drive

Turning Off the Computer

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3-1 3-1 3-1

3-3 3-4 3-5 3-5 3-6 3-7

3-7 3-9 3-9

3-9 3-10 3-11 3-12 3-13 3-13 3-14 3-15

Using MS-DOS With the Equity LT

Starting and Exiting MS-DOS Entering MS-DOS Commands. Storing Data Changing the Default Drive Formatting Diskettes

Formatting with two diskette drives Formatting with one diskette drive.

Copying Data

Using the DISKCOPY command Copying with two 3 f -inch diskette drives.

Copying with one 3 + -inch diskette drive Copying with one 5 $ -inch diskette drive Using the COPY command

Listing the Contents of a Diskette

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4-1

4-2

4-3 4-4 4-5 4-6 4-6 4-7 4-8 4-8 4-8

4-9 4-11 4-12 4-14

Contents

Creating and Using Subdirectories

Creating subdirectories Changing directories Using pathnames

Copying from one subdirectory to another Starting an Application Program. MS-DOS Commands and the Equity LT

Using the backlit screen with memory

resident programs

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Appendixes

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4-14 4-15 4-16 4-17 4-18 4-18

4-19

Options and Maintenance

Connecting a Color Monitor Replacing the Backlit Screen Element. Turning Off the Hard Disk

Turning off the hard disk first Turning off the hard disk later

B Troubleshooting

Error Messages The Computer Fails to Start Up The LCD Screen is Blank. The Monitor Screen is Blank

The Computer Does Not Respond Low Battery Problems Diskette Problems Hard Disk Problems Software Problems Printer Problems

Power-on Diagnostics.

System Device Check. Clock and CMOS RAM Check RAM Check Keyboard Controller and Keyboard Check. Floppy Disk Drive Seek Check Hard Disk Controller and Hard Disk Check

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A-1

A-9 A-9

B-1 B-1 B-1 B-2 B-2 B-3 B-3

B-4 B-5 B-5 B-6

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

C-3 C-4

Con tents

vii

Performing System Diagnostics

Starting System Diagnostics

Selecting a Test. Resuming From an Error System Board Check

Memory Check .................................

Keyboard Check ................................

Video Adapter and Display Check.

Video adapter check Attribute check Character set check 40-column character set check. 320 x 200 graphics mode check 640 x 200 graphics mode check Screen paging check Color video check

Synccheck .................................

Run all above checks

Floppy Disk Drives and Controller Check

Formatting a diskette Starting the floppy disk drive check. Sequential seek check Random seek check. Write, read check. Speed check

Run all above checks Parallel Port (Printer Interface) Check Serial Port (RS-232C) Check Alternate Serial Port Check Dot-matrix Printer Check Hard Disk Drive and Controller Check. .

Seek check Write, read check. Error detection and correction check. Read, verify check

Run all above checks Exiting System Diagnostics Error Codes and Messages

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D-1 D-1 D-2 D-3 D-4 D-4 D-5 D-6 D-7 D-8 D-8

D-9

D-9 D-10 D-11 D-12 D-12 D-12 D-13 D-13 D-14 D-15 D-15 D-15 D-16 D-17 D-17 D-17

D-19 D-20

D-21 D-22

D-23

D-24

Contents

Equity LT Specifications

CPU and Memory Controllers Interfaces Power Supply. Mass Storage

Keyboard ......................................

Environmental Requirements Physical Characteristics Power Requirements.

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

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E-1 E-1 E-1 E-1 E-2 E-2 E-2

E-2 E-3 E-3 E-3

F Glossary

Index

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Tables

1-1

Keyboard DIP switch functions.

1-2

Back panel DIP switch functions

3-1

Special keys.

D-1 Error codes and messages. . . . . . . . . . . . . . . . . . . . D-24

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F-1

I-1

1-12

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3-8

Contents

Introduction

Your Epson® Equity™ 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.

There are two Equity LT models:

l Dual diskette drive system, with two 3 + -inch diskette

drives

l Hard disk drive system, with one 3

and one 20MB (megabyte) internal hard disk drive.

You probably also chose either the standard or backlit model LCD (liquid crystal display) screen. The backlit model features an electroluminescent element that illuminates the background of the screen.

The Equity LT includes 640KB (kilobytes) of internal

memory and comes with built-in serial and parallel interfaces.

These interfaces let you connect an Epson printer or almost

any other peripheral device you choose.

LT portable computer is a compact

-inch diskette drive

If you have a color monitor, you can connect it to the Equity LT to take advantage of the color and the larger display. If you have the hard disk drive system, you can also connect an external 5 t -inch diskette drive to the computer; this enables computer that has a 5 7 -inch drive.

Epson offers a 300/1200 baud auto-dial modem which you can install inside the Equity LT to communicate over the phone lines with other computers. You can also buy a soft case for carrying your computer and a cigarette lighter adapter for an alternate power source. Ask your Epson dealer for information.

you to use 360KB diskettes from a

Introduction

The Equity LT comes with the MS-DOS operating system and the GW-BASIC programming language. If you have used MS-DOS before on another computer, you’ll find that it works the same on the Equity LT. The main commands are explained in this manual and full information, including descriptions of the special utility programs added by Epson, is in your MS-DOS manual.

You can use almost all application programs designed for

the IBM PC, PC XT and PC AT on your Equity LT.

How to Use This Manual

This user’s guide explains how to set up and care for your Equity LT. It also describes how to use your computer and run diagnostics checks. You do not need to read everything in this book; some sections may describe a particular option you do not have. In fact, if you are familiar with computers, you may need to read only Chapters 1 and 3, and Chapter 2 if you have the hard disk model.

Complete the 10 steps in Chapter 1 to set up your

computer and prepare it for use.

If you have the hard disk model, you must follow the

instructions in Chapter 2 to prepare the hard disk before you try to use it. If you have the dual diskette drive model, skip Chapter 2.

Chapter 3 describes general operating procedures and

explains how to use and care for your disks and disk drives.

Chapter 4 provides basic instructions for using MS-DOS

with the Equity LT.

If you need to connect a color monitor or replace the

backlit screen element, see Appendix A.

If you encounter any problems while using your Equity LT,

check the troubleshooting guidelines in Appendix B.

Introduction

Appendix C provides information on the power-on diagnostics in case your computer has trouble powering up. Appendix D outlines the system diagnostic checks you can

perform on your computer. If you are having trouble with any part of the hardware, you may want to run some or all of

these diagnostic checks.

Appendix E presents the Equity LT hardware specifications, and Appendix F is a glossary of computer terms used in this manual. Check the glossary whenever you come across an unfamiliar word.

Introduction

Chapter 1

Setting Up Your System

Setting up your Epson Equity LT portable computer is easy. Just follow the steps in this chapter. They describe how to set up your computer, copy the system diskettes that come with your Equity LT, and run the initial Setup program on your reference diskette.

You’ll find a quick reference guide to these steps on the inside back cover.

Do not turn on the computer, printer, or any other peripherals until the instructions tell you to. Otherwise, you may damage some part of your equipment.

If you have the hard disk model, go on to Chapter 2 when you complete the steps in this chapter.

Unpacking

As you remove the different parts of your system from their cartons, be sure to inspect each piece. If anything is missing or looks damaged, consult your Epson dealer.

Setting Up Your System

1-1

Besides this manual, you should have the following items:

l The computer l AC adapter and power cord l An MS-DOS operating system diskette (version 3.20),

which also contains the GW-BASIC programming language

l A reference diskette

An MS-DOS manual and a GW-BASIC manual.

You should also have either the standard or backlit LCD screen or a color monitor to use with your computer.

You’ll find a registration card with the computer. Fill this card out now and mail it to Epson. With your registration card on file, Epson can send you update information.

Be sure to keep your packing materials. They provide the best protection for your computer if you need to ship it later.

Connecting the Screen

Follow these steps to connect either the standard or

backlit screen to the computer:

As shown below, push back the arms on the computer so

they rest against the back edge of the computer.

1-2

Setting Up Your System

Use a flat blade screwdriver to lift off the plastic cover the front of each arm, as shown below. Set the covers aside.

There is a plastic insert cap inside each of the arms; lift it out as shown below. You may want to keep these caps in case you need to store or ship your computer later.

Setting Up Your System

1-3

Pick up the screen with both hands and insert it into the arms of the computer.

When the screen is securely seated in both arms, replace the plastic covers on the front of the arms by snapping them back into place. These secure the screen to the computer.

You can pull the screen forward or push it back to adjust

the viewing angle.

1-4

Setting Up Your System

Connecting the AC Adapter

Follow these steps to connect the AC adapter:

Insert the round end of the adapter cable into the jack

marked AC ADAPTER on the back panel of the computer.

Connect one end of the power cord to the adapter’s input socket.

Setting Up Your System

1-5

3. Plug the other end of the power cord into a 120 volt electrical wall outlet.

When the adapter is connected to both the computer and

an electrical outlet, the AC power indicator light turns on. This light is a convenient way to verify that the AC adapter is providing power to the computer.

Be sure to read ‘Using the Adapter” in Chapter 3 for

information on powering the computer with the AC adapter.

Charging the Battery

The Equity LT contains a rechargeable NiCad (nickel

cadmium) battery pack that powers the computer when you are

not using the AC adapter. Before you can use the computer the first time, you must charge the battery.

When you plugged in the AC adapter in step 3, it started charging the battery. This happens whenever the adapter is connected to the computer and plugged into an electrical outlet. Let the battery charge for at least five minutes before you start using the computer for the first time and leave the AC adapter connected while you use the computer.

Be sure to read “Using the Battery” in Chapter 3 for information on using the computer with the battery. It explains how to fully charge the battery; you should do this as soon as possible with your new computer.

Connecting a Printer

The Equity LT has both parallel and serial interfaces.

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 dealer for more information.

1-6

Setting Up Your System

Parallel interface

The Equity LT parallel interface is Centronics-compatible and uses a DB-25S connector. Most Epson printers have parallel interfaces.

To connect a printer to the computer, you need an IBMcompatible printer cable. If you are 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 on the computer:

1. Place the printer next to your computer.

Before you connect the printer, be sure the power switches on the computer and printer are off.

3. Connect the appropriate end of the printer cable to the

parallel port on the back panel of the computer, as shown

below. If the plug has retaining screws, tighten them with a

small screwdriver.

Setting Up Your System

4. Connect the other end of the cable to the printer as shown below. To secure the cable, squeeze the clips at each side of the printer connector and click them into place.

5. Plug the printer’s power cable into an electrical outlet.

Be sure to turn off DIP switch 1 on the back panel as described below under “Setting the DIP Switches” to let your computer know a printer is connected.

Note

If you plan to use an external 5 f -inch diskette drive with your Equity LT, it must be connected to the parallel port. Therefore, you cannot have both a parallel printer and the diskette drive connected at the same time. Be sure to turn on DIP switch 1 on the back panel to select the external drive. See “Setting the DIP Switches” below.

1-8

Setting Up Your System

Serial interface

If you have a printer or another peripheral with a serial

interface, connect it to the serial (RS-232C) port at the back of

the computer.

The Equity LT uses a DB-9P connector, so be sure you have an IBM AT-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 given above for connecting a parallel device.

You need to ensure that 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 to the serial instead of the parallel port. To make these changes, use the MS-DOS SETMODE program (or the MODE command), described in your MS-DOS manual.

Setting Up Your System

1-9

Note

If you plan to connect a color monitor or an external diskette drive to your computer, do it at this point. For instructions on connecting the monitor, see Appendix A, “Options and Maintenance.” For instructions on connecting an external drive, see the instructions that came with the drive you bought. If your computer already has two internal diskette drives and you connect an external drive, the internal diskette drive on the left side of the computer is disabled.

Be sure to set the computer’s DIP switches correctly if you connect either of these devices to your Equity LT. See ‘Setting the DIP Switches” below.

Setting the DIP Switches

The DIP switches on the Equity LT are set to provide

your computer with information about itself. Each time you turn it on, the computer checks the DIP switch settings to determine the LCD mode in use, whether an external diskette drive is connected, the number of diskette drives in use, and the type of serial connection.

The Equity LT has two sets of DIP switches: one just above the keyboard and one on the back panel of the computer. The set above the keyboard has four switches that control the LCD screen. The set on the back panel has four switches that control the diskette drive and parallel and serial interface configuration.

Your dealer may have set these switches for you. Read this section, however, to be sure the settings match your system setup.

Note

Change the DIP switches only while your computer is off. Otherwise, the new settings may not take effect until you turn the computer off and then on again.

1-10

Setting Up Your System

A DIP switch is either on (up) or off (down). To change a

setting, use a hard, thin object, such as a small screwdriver.

Keyboard DIP switches

To access the DIP switches above the keyboard, you need

to open the cover shown below.

DIP switch cover

Press the raised tab back and lift up at the same time to expose the DIP switches.

DIP switches

Setting Up Your System

The system functions controlled by these switches are listed

in Table l-l and then described below. Table 1-1. Keyboard DIP switch functions

Switch 1, LCD reverse or normal- This switch tells your

computer whether to display text on the screen in normal mode or reverse. In normal mode on the standard model LCD,

characters are dark on a light background. In normal mode on the backlit model LCD, the characters are light on a dark background. In reverse mode on the standard model LCD,

characters are light on a dark background. In reverse mode on

the backlit model LCD, the characters are dark on a light

background. Turn this switch on for normal mode or off for reverse mode.

Switches 2 and 3, LCD mode-These switches control how

the text displays on the screen. If you cannot see text clearly,

try changing these switches to select another mode.

Switch 4, LCD or monitor selection-This switch tells the

computer whether to display text on the LCD screen or on a

monitor screen you have connected to the computer. If you

have connected a color monitor to your computer, turn this

switch off. Otherwise, leave it on.

1-12

Setting Up Your System

Back panel DIP switches

The second set of DIP switches are on the left side of the

back panel.

The system functions controlled by these switches are listed in

Table 1-2 and then described below.

Table

1-2.

Back panel

l7-

Use external diskette drive Use parallel printer External diskette drive is B External diskette drive is A

1 diskette drive 2 diskette drives Serial port is secondary Serial port is primary

DIP

switch functions

I 2 I 3 I 4

I I

OFF

Switch 1, use of parallel port-This switch tells your

computer whether a diskette drive or a parallel printer is connected to the external parallel port. If you connected a parallel printer to this port, turn this switch off. If you connected an external 5 j -inch diskette drive to the port, turn this switch on.

Setting Up Your System

1-13

Switch 2, external drive assignment-If you have connected

an external diskette drive to the computer, this switch determines whether MS-DOS and your application programs access the drive as drive A or drive B. The external drive should be drive B, unless you are using a copy-protected application program that requires the diskette to be loaded in drive A. In this case, you can assign the external drive as A by turning switch 2 off. If you want it to be drive B, turn the switch on.

Switch 3, number of diskette drives-This switch tells the

computer how many diskette drives it has. If you have one diskette drive, turn this switch on. If you have two drives (either two internal or one internal and one external) turn it off.

Switch 4, primary or secondary serial port-This switch tells

the computer whether the built-in serial port is primary or secondary. If you install the optional modem card, which has an external serial port, you can use this DIP switch to select which port is to be primary and which is to be secondary.

If you do not have a modem installed or if you want the built-

in port to be the primary port, turn switch 4 off. If you want the modem port to be the primary port and the built-in port to be secondary, turn switch 4 on,

Turning On the Computer

After you complete steps 1 through 6, you’re ready to turn on the power and start using your Equity LT computer. But before you turn it on, read the following safety rules.

Safety rules

Follow these rules to avoid accidentally damaging your

computer or injuring yourself:

Do not attempt to dismantle any part of the computer. If there is a hardware problem you cannot solve after reading Appendix B on troubleshooting or performing the system diagnostics in Appendix D, consult your Epson dealer.

1-14

Setting Up Your System

Never turn off your computer while a disk drive light is on. This can destroy data stored on disk or make a whole disk unusable.

l Always wait at least five seconds after you turn the power

off before you turn it on again. Turning the power off and on rapidly can damage the computer’s circuitry.

Do not leave a beverage near your computer or any of its components. Spilled liquid can damage the circuitry of your equipment.

Turning on the power

After you have charged the battery (by connecting the AC

adapter to the computer) for at least five minutes, you are

ready to turn on your computer. Be sure to leave the AC

adapter connected while you use the computer for the first time.

Before you turn on the computer, turn on any peripheral devices such as a printer, an external diskette drive, or a color monitor.

If your computer has a hard disk, turn it on with the switch on the back panel. It is best to leave this switch on at all times.

You can turn on your computer with or without a system diskette in the drive. For now, leave the drive empty. To turn on the computer, press the power switch on the back panel.

wer switch

Setting Up Your System

1-15

+ 121 hidden pages