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Appendix D

Performing System Diagnostics

This appendix describes how to check the operation of the

main unit and peripheral devices of your Equity LT. You check
these devices using the diagnostics program on your reference
diskette.

Run diagnostics if you are unsure whether a device is performing

correctly. Table D-l at the end of this appendix lists the
possible error messages you may see when testing these devices.

Starting System Diagnostics

To start the system diagnostics program, follow these steps:

1. Insert the reference diskette in drive A.

2. Turn on or reset the computer. The diagnostics program

loads automatically and displays the main menu:

OPERATION MENU

1 - Setup

2 - Format diskette
3 - System diagnostics

0 - Exit to DOS for more utilities
Enter selection number:

Press

3 to select System diagnostics and press

Enter.

When you start the System diagnostics, the computer

checks the following:

The setting of the DIP switches above the keyboard and on
the back panel

The positions of the internal jumpers

The peripheral devices that are connected to the system.

Performing System Diagnostics

D-l

Summary of Contents for Equity LT

Page 1: ...EQUlTY LT User s Guide Y16499100301 ...

Page 2: ...gs 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 p...

Page 3: ... 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 wat...

Page 4: ...EPSON Equity LT User s Guide ...

Page 5: ... 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 omis sions Nor is any liability assumed for damages resulting from the use of the informa tion contained herein Further this publication and features described herein are subject to change witho...

Page 6: ...nal suggestions The user may find the following book let prepared by the Federal Communications Commission helpful Television Interference Handbook This booklet is available from the U S Government Printing Office Washing ton 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 t...

Page 7: ...User s Guide ...

Page 8: ...ing screen contrast and brightness 1 16 Initial screen display 1 17 8 Loading MS DOS 1 17 9 Copying System Diskettes 1 19 Copying with two diskette drives 1 19 Copying with one diskette drive 1 20 10 Running the Setup Program 1 22 Setting the real time clock 1 23 Changing the backlight period 1 24 Changing the serial port RS 232C settings 1 25 Leaving the Setup program 1 28 2 Preparing a Hard Disk...

Page 9: ... removing diskettes 3 12 Making backup copies 3 13 Write protecting diskettes 3 13 Using a single diskette drive 3 14 Turning Off the Computer 3 15 4 Using MS DOS With the Equity LT 4 1 Starting and Exiting MS DOS 4 2 Entering MS DOS Commands 4 3 Storing Data 4 4 Changing the Default Drive 4 5 Formatting Diskettes 4 6 Formatting with two diskette drives 4 6 Formatting with one diskette drive 4 7 C...

Page 10: ...urning Off the Hard Disk A 9 Turning off the hard disk first A 9 Turning off the hard disk later A 9 B Troubleshooting B 1 Error Messages B 1 The Computer Fails to Start Up B 1 The LCD Screen is Blank B 2 The Monitor Screen is Blank B 2 The Computer Does Not Respond B 3 Low Battery Problems B 3 Diskette Problems B 4 Hard Disk Problems B 5 Software Problems B 5 Printer Problems B 6 C Power on Diagn...

Page 11: ...atting 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 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 Alternate Serial Port Check D 19 Dot matrix Printer Check D 19 H...

Page 12: ...Environmental Requirements Physical Characteristics Power Requirements Options F Glossary Index Tables 1 1 Keyboard DIP switch functions 1 12 1 2 Back panel DIP switch functions 1 13 3 1 Special keys 3 8 D 1 Error codes and messages D 24 E 1 E 1 E 1 E 1 E 2 E 2 E 2 E 2 E 3 E 3 E 3 F 1 I 1 Contents i x ...

Page 13: ...ectroluminescent 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 If you have a color monitor you can connect it to the Equity LT to take advantage of the color and the larger display...

Page 14: ...ook 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 t...

Page 15: ...ks 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 3 ...

Page 16: ...ick 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 1 Unpacking As you remove the different parts of your system from their cartons be sure to inspe...

Page 17: ... 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 2 Connecting the Screen Follow these steps to connect either the standard or backlit s...

Page 18: ...er the front of each arm as shown below Set the covers aside on 3 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 ...

Page 19: ...er 5 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 ...

Page 20: ...ese steps to connect the AC adapter 1 Insert the round end of the adapter cable into the jack marked AC ADAPTER on the back panel of the computer 2 Connect one end of the power cord to the adapter s input socket Setting Up Your System 1 5 ...

Page 21: ...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 t...

Page 22: ... 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 2 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 ...

Page 23: ...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 exte...

Page 24: ...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 ...

Page 25: ...ide 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 ...

Page 26: ...bject 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 I Press the raised tab back and lift up at the same time to expose the DIP switches DIP switches I Setting Up Your System ...

Page 27: ...ndard 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 sele...

Page 28: ...r OFF I I I External diskette drive is B External diskette drive is A 1 diskette drive 2 diskette drives ON OFF ON OFF ON OFF Serial port is secondary Serial port is primary 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 y...

Page 29: ...r 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 buil...

Page 30: ...attery 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 1 2 3 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...

Page 31: ...scription of the power on diagnostics see Appendix C Adjusting screen contrast and brightness If you cannot see text on the screen clearly use the switch or switches on the right side of the screen to adjust the screen s contrast and brightness The standard model has only the contrast switch The backlit model has a contrast switch and a brightness switch as shown below The contrast switch determin...

Page 32: ...ou the computer can now load an operating system from a diskette in the right drive drive A The Equity LT needs a disk operating system DOS to function It comes with MS DOS version 3 20 If you want to use another operating system consult your dealer Chapter 4 provides the basic information you need to use MS DOS so be sure to read that chapter before you start using the operating system with your ...

Page 33: ...and then a date prompt similar to this Current date is Sat 10 24 87 Enter new date mm dd yy You do not need to enter the date because you will soon be entering the correct date and time when you run the Setup program below Once you enter the correct date and time the Equity LT retains them unless you change them again in the Setup program 4 Press Enter to accept the displayed date The screen then ...

Page 34: ...working copies for daily use and store the originals in a safe place The procedure for copying a diskette depends on whether your computer is the dual diskette drive model or the hard disk model which has only one 3 r inch diskette drive Follow the procedure for your model described below You will need two blank 3 inch 720KB double sided diskettes When you finish making the copies be sure to put t...

Page 35: ...pt Copy another diskette Y N Press Y so you can make a copy of the reference diskette Remove the diskettes from drives A and B press the release button on each drive to remove the diskette Then insert the reference diskette in drive A and another blank diskette in drive B Follow the prompts on the screen to copy the reference diskette 6 When you finish and the Copy another diskette Y N prompt disp...

Page 36: ...tem diskette from drive A press the release button to release the diskette and insert the blank diskette the target in the drive Then press any key If the diskette in drive A is not formatted the DISKCOPY program formats it Then the program begins copying the data from the computer s memory to the formatted diskette When it has copied all the files from memory DISKCOPY displays these prompts on th...

Page 37: ... the computer information about the way it is set up This is a simple procedure that you must do at least once You may need to do it again later if you want to change something The Setup program lets you set or change the following l Real time clock s date or time l Backlight period for the backlit model screen l Default settings for the serial RS 232C port or ports The information you define with...

Page 38: ...ck but they cannot make permanent changes to the time and date settings Use the Real time clock option if you need to change the time and date permanently for daylight saving time for example Your computer automatically adjusts for leap years Note that even though MS DOS and your application programs may use a different format the real time clock uses a 24 hour time format to store the time To set...

Page 39: ...an 12 for the month the computer beeps and the date does not change 4 When both the time and date are correct press t to return to the main menu to change other settings Changing the backlight period The backlight period is the length of time a backlit screen remains illuminated before the computer turns it off automatically Although this power saver feature is designed mainly for the backlit mode...

Page 40: ...ime period press To decrease the time period press The time increases and decreases in half minute increments 5 1 0 1 5 etc If you reach 5 0 and press the screen displays the following No time limit This means that the computer will not turn the backlighting off at all 3 After you select the time period you want press 1 to move the cursor block to SAVE A SETTING and press Enter to return to the Se...

Page 41: ...t on the optional modem card If your computer has a modem card installed and you turn on DIP switch 4 on the back panel so the built in port is secondary COM1 and COM2 are reversed Consider this if you alter the serial port settings in the following instructions The procedure for changing the serial port settings is identical for the primary and secondary serial ports To alter the primary serial p...

Page 42: ...ys to move the cursor block to the correct type of parity check and press Enter To change the data length move the cursor block to Data length and press Enter The number changes to either 7 or 8 whichever was not displayed before Press Enter again if you want to reselect the previous number To change the number of stop bits move the cursor block to Stop bits and press Enter The number changes to e...

Page 43: ...if you want to cancel the changes you made press 1 to select Exit without saving and press Enter When the settings are correct press 1 to select EXIT AND SAVE and press Enter At this point the program resets the computer using the new configuration If the reference diskette is in drive A remove it and insert the MS DOS diskette in the drive If the computer displays a Setup error message during the...

Page 44: ...when you use diskettes You can do almost all of your work on the hard disk and copy your files to diskettes as needed to make backups for example Although the hard disk is very reliable it is essential to back up all your hard disk files on diskettes in case you lose some data accidentally Use the MS DOS BACKUP program described in your MS DOS manual to back up your hard disk files Even though the...

Page 45: ...any problems If you do have any questions see Chapter 4 for basic information about using MS DOS or see your MS DOS manual for complete information on the operating system Creating the MS DOS Partition You need to partition the hard disk so it can run the MS DOS operating system Follow the steps below to create one partition on your hard disk for MS DOS 1 Turn on the hard disk if it is not on alre...

Page 46: ...ompt redisplays Formatting the MS DOS Partition Once you have created the MS DOS partition you must format it for MS DOS You use the SELECT command which automatically does the following l Formats the MS DOS partition l Labels the root directory l Copies the MS DOS system files to the hard disk After you have done this MS DOS boots automatically from the hard disk every time you turn on or reset y...

Page 47: ...en press Enter MS DOS begins formatting your hard disk s DOS partition The screen continuously displays the changing head and cylinder numbers Besides formatting the hard disk partition MS DOS also copies the operating system files to the hard disk When the procedure is complete the screen displays the following Format complete System transferred Volume label 11 characters ENTER for none 5 It is a...

Page 48: ...want to store them in a separate subdirectory see Chapter 4 for instructions 1 Remove the MS DOS diskette from drive A and insert the reference diskette in the drive 2 You should still be logged on to drive A If not type A and press Enter 3 At the A prompt type the following and press Enter COPY C MS DOS copies all the files from the diskette to your hard disk The file names appear on the screen a...

Page 49: ... diskette drive on the right side of the computer is drive A If you have connected an external diskette drive to your Equity LT MS DOS identifies it as drive B unless you have turned off DIP switch 2 on the back panel to make the external drive A Hard Disk Power Switch The hard disk in your Equity LT has its own power switch Leave this switch on at all times unless you will be using the computer w...

Page 50: ...pting any operation For example if you are not using the adapter and the low battery light starts flashing see below connect the AC adapter as soon as possible to avoid losing data When the adapter is connected to both the computer and an electrical outlet the AC indicator light on top of the computer toward the back is illuminated Because the adapter can operate at 100 to 120 and 200 to 240 volts...

Page 51: ... the maximum charge leave it connected for 12 hours The battery pack cannot be overcharged so don t worry if you leave it connected for more than 12 hours Remember the following when you are charging the battery l Use only the AC adapter that comes with the Equity LT Using a different one can damage the computer l It is best to charge the battery for at least five hours at a time If you charge the...

Page 52: ...IVE LEDs labeled L left and R right indicate which of the drives is being accessed if any If you have a hard disk the LED labeled L is for the hard disk When one of these lights is on the computer is writing to or reading from the disk in that drive Never turn off the computer or remove a diskette from the drive if the light is on If you connected an external diskette drive it should have its own ...

Page 53: ...ou want to move it turn it off and then close the screen as shown below so it locks into the bottom part of the computer When you want to open the screen slide the latch release button on either side shown below toward you Then lift the screen back 3 4 Using the Equity LT ...

Page 54: ...u carry the computer by its handle Selecting Execution Speed The Equity LT can operate at two execution speeds 4 77 MHz or 10 MHz At the higher speed the computer performs all tasks faster Leave the speed at 10 MHz unless your application program must be run at the slower speed To change the speed move the CPU SPEED switch above the keyboard RESET CPU SPEED Using the Equity LT 3 5 ...

Page 55: ...ogram unless you have to Some application programs classify and store new data whenever you exit the program properly If you reset the computer while such a program is running you may lose data There are three ways to reset Because each is more powerful than the last try them in the order listed here 1 If you are using MS DOS hold down Ctrl and Alt and press the Del key on the numeric keypad at th...

Page 56: ... you may have changed this backlight period For instructions see Changing the backlight period in Chapter 1 The computer also turns the screen off if you connect a color monitor to the computer or turn off DIP switch 4 above the keyboard Another way to extend the life of the screen is to keep it only as bright as you need to see the screen clearly Use the brightness switch on the right side of the...

Page 57: ... keyboard input or executes a command Turns the insert function on and off Deletes the character at the cursor Within application programs control cursor location Changes the function of the cursor numeric keys from cursor positioning to numeric For example when the Num Lock function is on and you press the 1 key you get the number 2 Press Num Lock again to change back to normal cursor functions D...

Page 58: ...es in your computer allow you to store data on disk and to retrieve and use stored data All Equity LT systems have at least one 720KB diskette drive you also have either a second diskette drive or a hard disk drive in your system This section explains how disks work and tells you how to do the following l Choose diskettes l Care for your disks and disk drives l Insert and remove diskettes l Make b...

Page 59: ... Choosing diskettes for the Equity LT Be sure to buy high quality diskettes to use in your Equity LT Choose 3 r inch diskettes that are 720KB kilobytes soft sectored double sided 135 TPI tracks per inch Each diskette can hold 720KB of data or about 300 pages of text One kilobyte equals 1024 bytes If you have an external 5 inch diskette drive use 5 inch 360KB double sided double density soft sector...

Page 60: ...ata Remove all diskettes before you turn off the computer Keep disks away from dust and dirt Small particles of dust or dirt can scratch the magnetic surface and destroy data Dust can also ruin the read write heads in a disk drive Keep disks away from magnetic fields Remember that disks store data magnetically There are many sources of magnetism in your home or office such as electrical appliances...

Page 61: ...d disk If you interrupt this process you can lose data l Never attempt to open the hard disk unit The disk itself is enclosed in an air tight container to protect it from dust l Do not turn off the hard disk drive unless you are not using the AC adapter and you want to conserve the computer battery s charge See Turning Off the Hard Disk in Appendix A Inserting and removing diskettes To insert a di...

Page 62: ...king diskettes Copy your data diskettes regularly preferably every day to keep them up to date and store them away from your originals Chapter 1 describes how to make a backup copy of your MS DOS and reference diskettes For general instructions on copying diskettes see Chapter 4 If you have a hard disk keep backup copies of all your program files on diskettes and regularly copy important data file...

Page 63: ...elps you perform operations that normally require two diskette drives For example if you give a command to copy from one drive to another MS DOS copies from the first diskette you place in the drive to the computer s memory Then MS DOS prompts you to insert another diskette and copies from memory to the diskette you place in the drive When copying is complete you see a prompt to insert the origina...

Page 64: ... the program you are using and then remove all diskettes from the disk drives Turn off any peripherals such as a printer a monitor or an external diskette drive and then turn off the computer If you have the hard disk system do not turn off the hard disk Using the Equity LT 3 15 ...

Page 65: ...mputer s memory This means that you must first load MS DOS so that the operating system can accept your instructions and make the right connections To communicate with the operating system you need to enter MS DOS commands How much you need to know about the MS DOS commands depends on how you plan to use your Equity LT If you plan to use it only for running application programs you ll use very few...

Page 66: ...als such as the printer or an external diskette drive 2 If your system has a hard disk be sure its power switch is turned on 3 If your system does not have a hard disk insert the working copy of your MS DOS system diskette into drive A on the right side of the computer 4 Turn on your computer Note If your system has a hard disk that is set to boot MS DOS automatically be sure that no diskette is i...

Page 67: ...OS command whenever you see the MS DOS command prompt This means that you type the command name and any necessary parameters and then press Enter to execute the command Parameters include items that identify the data to be processed and switches that alter the effects of a command You can enter command names and parameters in either uppercase or lowercase letters You must however separate command ...

Page 68: ...tional and can be up to three characters long It describes what type of file it is such as a text file or program file When you use an extension separate it from the file name with a period For example an MS DOS filename might look like this D A T A T X T Sometimes you have to further identify your files by telling MS DOS on which drive the file is stored To do this you type the letter A B or C of...

Page 69: ...when entering the command For more information see Creating and Using Subdirectories later in this chapter or see your MS DOS manual Changing the Default Drive When you see the A prompt you know that MS DOS is operating from drive A and you can now enter a command If however you want to run a program or find a file on a different drive you must specify that drive You can do this by including the d...

Page 70: ...e diskette drive and one hard disk Follow the instructions below for your system Formatting with two diskette drives Follow this procedure to format a diskette in drive B The drive can be either the internal drive on the left side of the computer or an external 5 t inch diskette drive 1 Insert your working copy of the MS DOS system diskette in drive A and press any key if necessary 2 When you see ...

Page 71: ... When you see the A or C prompt type FORMAT A and press Enter You see this prompt Insert new diskette for drive A and strike ENTER when ready 3 If the MS DOS diskette is in drive A remove it Then insert the diskette you want to format in drive A and press Enter to start formatting MS DOS displays the head and cylinder numbers as it formats each cylinder of the diskette 4 When the diskette is compl...

Page 72: ...ure for your system configuration l Two 3 inch diskette drives copying from A to B l One 3 inch diskette drive copying from A to A l One 5 f inch diskette drive Note You cannot use DISKCOPY to copy from a 3 inch drive to a 5 d inch drive or vice versa You must use the COPY command described below to copy individual files And you cannot use the DISKCOPY command to back up files on the hard disk Use...

Page 73: ...e format is complete You see this message Copying 80 tracks 9 Sectors Track 2 Side s 5 When the copy is complete you see this message Copy another diskette Y N Your diskette has now been copied and you can either make another copy or leave the DISKCOPY command Press Y to perform another copy or N to end the DISKCOPY command Copying with one 3 f inch diskette drive 1 First be sure your original dis...

Page 74: ...ady 5 Remove the diskette from drive A and insert the blank diskette in the drive DISKCOPY checks to see if the new diskette is formatted If it is not DISKCOPY formats the diskette You see the message Formatting while copying The copy operation begins when the format is complete You see these messages Copying 80 tracks 9 Sectors Track 2 Side s If the source diskette contains more data than can be ...

Page 75: ...bstitute A for B in the instructions 1 First be sure your original diskette is write protected There should be a write protect tab over the write protect notch 2 Insert the working copy of your MS DOS system diskette in drive A or type C to log on to drive C if you have a hard disk 3 At the A or C prompt type DISKCOPY B B and press Enter MS DOS displays these messages Insert SOURCE diskette in dri...

Page 76: ...opied and you can either make another copy or leave the DISKCOPY command Press Y to perform another copy or N to end the DISKCOPY command Using the COPY command You can use the COPY command to copy files in several ways You can do the following l Copy individual files from one diskette to another or to the same diskette l Copy a group of files using wildcard characters l Copy one or more files and...

Page 77: ...e A to the diskette in drive B using the same name Type COPY A file1 ext B If you want to copy a file from the diskette in drive A to the diskette in drive B using a new name type COPY A file1 ext B file2 ext To copy a file onto the same diskette with a new name type COPY file1 file2 In this case you do not need the drive identifiers An easy way to copy a group of files is by using a wildcard char...

Page 78: ... the diskette in drive B type DIR B and press Enter The DIR command lists the names of the files and also lists any subdirectories the sizes of the files in bytes and the date and time each file was last modified At the end of the directory listing is the number of files and available bytes on your diskette Creating and Using Subdirectories Because a diskette or hard disk can store many files you ...

Page 79: ... Starting at the A prompt for the dual diskette model or the C prompt for the hard disk model first type CD and press Enter to make sure that you are in the root directory Then type the following and press Enter MD LETTERS MD stands for Make Directory you can also type MKDIR the backslash ensures that the new directory is a subdirectory of the root directory and LETTERS is the name of the new subd...

Page 80: ...r a name identifies this as a subdirectory of the current directory If you want to access either of the new files you created you must first do one of the following l Change directories l Specify the pathname Changing directories To change directories merely type CD followed by a backslash and the name of the subdirectory For example to change to the LETTERS subdirectory type the following and pre...

Page 81: ...nd press Enter TYPE LETTERS LETTER1 The pathname LETTERS LETTER1 is the full pathname for the file LETTER1 You can use it no matter what directory you are in as long as it is on the same disk The first backslash for root directory signifies that the path to the file starts in the root directory and LETTERS is the name of the subdirectory In a pathname the filename is always last and is always prec...

Page 82: ...our files in any application program If you want to make extensive use of subdirectories see the following subjects in your MS DOS manual XTREE PATH and AUTOEXEC BAT files Starting an Application Program After you have loaded MS DOS you can start using an application program Remove your MS DOS diskette from drive A and insert your application program diskette From this point on the documentation t...

Page 83: ...do with a monochrome monitor Using the backlit screen with memory resident programs If you use memory resident programs such as the popular desk top accessories or the MS DOS KEYBxx commands you may find that you cannot turn on the screen s backlighting once it has automatically turned itself off If this happens save any data files you are working on and reset your computer You can prevent this pr...

Page 84: ...w the instructions below to connect it to the computer 1 Be sure both the computer and monitor as well as any other peripherals are turned off 2 Place your monitor near the Equity LT main unit It is easiest to connect the monitor cable if the backs of the monitor and computer face you 3 If necessary connect the monitor cable to the monitor Some monitors come with permanently attached cables 4 Conn...

Page 85: ... any other peripherals and then turn on the computer Text will be displayed on the monitor screen instead of the computer screen Replacing the Backlit Screen Element If you need to replace the electroluminescent element in the backlit screen follow the instructions below The procedure has many steps but they are not difficult Still you must be very careful not to damage any components on or inside...

Page 86: ... a safe place 3 Use the screwdriver to remove the plastic cover on each of the arms that hold the screen as shown below 4 When the covers on both arms are off pull the screen straight up out of the arms Options and Maintenance A 3 ...

Page 87: ...er on each side of the screen near the bottom As shown below use a small screwdriver to lift out each of the covers screw cover 6 Use a Phillips screwdriver to remove both screws and set them aside 7 Holding the screen carefully to keep it together turn it over so it is face up and lay it flat on the table A 4 Options and Maintenance ...

Page 88: ...reen as shown below and set it aside 9 On either side of the screen is a screen latch mechanism shown below Lift out the one on right side and set it aside in a safe place You can leave the one on the left side in place Options and Maintenance A 5 ...

Page 89: ...power supply to the screen Unplug it as shown below nnector 11 Carefully lift up the power supply and set it next to the screen as shown below It is connected by cables so you cannot remove it completely Be careful not to strain any of the cables A 6 Options and Maintenance ...

Page 90: ...htly as you pull it out 13 Slide the new element into the screen 14 Replace the power supply you removed in step Il Be sure it is seated properly and be careful to tuck any cables inside the frame of the screen Also be sure the screw hole in the power supply below the screen control switches is aligned properly with the screw post inside the screen 15 Reconnect the connector you unplugged in step ...

Page 91: ...er re align the inside components and try again 18 Hold the screen firmly so both sides stay together and turn it over so the back faces up 19 Replace the screws you removed in step 6 20 Replace the plastic screw covers you removed in step 5 insert the outside tab first and then snap them back into place 21 Turn the screen over and slide it back into the computer s two arms 22 Replace the plastic ...

Page 92: ...ribed below Turning off the hard disk first If you will not be using the hard disk at all turn off the switch before turning on the computer When you turn on the computer the screen displays this error message 1701 C Press F1 to continue Insert the MS DOS diskette in drive A and load the operating system from that drive Then you can use the computer just as you would if it had no hard disk drive R...

Page 93: ...be on the current drive For these types of programs you need to run them from drive A The following example shows the proper procedure for turning the hard disk off while the computer is on 1 Suppose you turn on the computer with the hard disk switch on MS DOS loads from the hard disk 2 Next type A and press Enter to log on to drive A 3 If you want to load an application program from the hard disk...

Page 94: ...application program working on drive A 6 When you want to save your text on the hard disk turn it on Enter the command for saving the text on drive C The hard disk may take up to 10 seconds to perform the operation because it needs to reinitialize itself Options and Maintenance A 11 ...

Page 95: ...G If you need to turn off the computer for any reason always wait at least five seconds before you turn it back on You can damage the Equity LT if you turn it off and on rapidly Error Messages If the screen displays an error message during the power on diagnostics see Appendix C If the screen displays an error message while you are running system diagnostics described in Appendix D check the error...

Page 96: ...IP switch 4 above the keyboard is turned on to select the LCD screen as the display device See Setting the DIP Switches in Chapter 1 for instructions Remove any diskettes then turn off the computer Check that the LCD screen is properly connected to the computer See Chapter 1 for instructions Wait at least five seconds and then turn the computer back on If you have the backlit model screen you may ...

Page 97: ...omputer Does Not Respond If the computer does not respond to something you enter from the keyboard try the following 1 Wait a few seconds Some operations take longer to perform than others For example a spreadsheet program takes longer to recalculate an entire spreadsheet than to record one figure Also BASIC programs that have many calculations to perform can take several minutes or even hours Be ...

Page 98: ... you have trouble copying the entire diskette some of the sectors may be bad Try to copy single files with the COPY command If the operation works using the copy the original diskette is probably damaged Make another copy to use as a backup 2 Have you inserted the right type of diskette The diskette type is normally shown on the manufacturer s label In the computer s internal drives which have a s...

Page 99: ...ave accidentally repartitioned or reformatted part or all of the disk If you have not done so and your hard disk does not function properly have an authorized Epson service center check your hard disk Never open the airtight container that encloses the recording disk Software Problems If you have trouble with a software program check the following possible problems and solutions 1 The software pro...

Page 100: ...k correctly right after you install it make sure the printer has power and is properly connected to the computer The printer manual tells you how to connect your printer If you have printing problems check the printer manual for the printer s DIP switch settings The DIP switches on a printer help it communicate properly with the computer Be sure your software is set up for your printer Carefully f...

Page 101: ...alization The error message remains on the screen but the computer is inoperable If the error is not serious the computer displays an error message and waits for you to resume further checking You see this prompt F1 key to resume Write down the error message and code number and then press F1 to resume Report the error message and code number to your dealer when requesting repairs System Device Che...

Page 102: ...e corrected Run the Setup program provided on the reference diskette to correct the installation information If the system clock has not been set this message is displayed 163 Time Date not set Run SETUP in DIAGNOSTICS RAM Check The computer now begins to check the computer s RAM During this check this message is displayed xxxKB OK where xxx indicates the amount of memory in which no malfunction i...

Page 103: ...l that is causing the error This message may occur after a keyboard reset Ctrl Alt Del and does not necessarily indicate a problem Floppy Disk Drive Seek Check The computer checks its floppy disk diskette drives by searching the read write heads for any malfunction If any seek errors are found you see this message 601 Diskette error If this error occurs confirm that the system diskette is inserted...

Page 104: ...rd disk controller and drive unit If a malfunction is found in the hard disk con troller you see one of these error messages 1701 A 1701 B 1701 E If an error is found in the hard disk drive unit one of these error messages is displayed 1701 C 1701 D C 4 Power on Diagnostics ...

Page 105: ...art the system diagnostics program follow these steps 1 Insert the reference diskette in drive A 2 Turn on or reset the computer The diagnostics program loads automatically and displays the main menu OPERATION MENU 1 Setup 2 Format diskette 3 System diagnostics 0 Exit to DOS for more utilities Enter selection number 3 Press 3 to select System diagnostics and press Enter When you start the System d...

Page 106: ...device then press Enter Before the test begins you are asked how many times to perform the test You see this menu Number of times to test device 1 Run test one time 2 Run test multiple times 0 Exit Enter selection number You can specify that the test be performed one time only or any number of times in the range from 1 to 9999 Running a test multiple times is for reliability testing of essential f...

Page 107: ... the problem you can print out the message on your printer You see this prompt Do you want a printout of the error message s Y N To continue without printing the error message press N and Enter Before you request a printout be sure your printer is turned on and on line and the paper is installed correctly Then press Y and Enter If the printer is not ready the following message and prompt are displ...

Page 108: ...ed by these tests see Table D l at the end of this appendix System Board Check Use this option to check the operation of each major component on the system board including the following l The V30 CPU chip l The real time clock CMOS RAM and battery l The main integrated circuits The checks made on the V30 CPU chip are extremely comprehensive They ensure that the CPU instruction set is functioning c...

Page 109: ...ur Epson dealer Attempting to correct memory errors yourself may violate your warranty agreement Keyboard Check Use this option to check the operation of the keyboard The program first checks the keyboard controller during this check you see the indicator lights above the keyboard flash If no errors are detected you can then choose the correct keyboard layout Before checking the operation of the k...

Page 110: ...f all the keys function correctly and match the characters displayed press Y and then Enter If all the keys function but the characters displayed do not match the keys press Y and then Enter Then re select the keyboard test from the DEVICE LIST and check that you selected the correct keyboard layout You can find diagrams of all the international keyboard layouts in the MS DOS manual If any key is ...

Page 111: ...d only the first test Video adapter check is performed If an error occurs during any of these tests record the error code and message or print them out Then contact your Epson dealer When you finish running the video adapter and display check press 0 and Enter to return to the DEVICE LIST Video adapter check To check the video adapter press 1 and then Enter The computer checks the video RAM displa...

Page 112: ...ct If the colors are not correct adjust the controls on your display monitor If they are still incorrect press N and Enter Contact your Epson dealer to verify any monitor problems Character set check To check your 80 column character set press 3 and Enter The character fonts that are included in the internal character generator are displayed Check the characters displayed on your screen against th...

Page 113: ... your screen against this illustration After checking the character fonts respond to the prompt Is the display correct Y N If the characters displayed match the illustration press Y and Enter If you find a problem with the characters on the screen press N and Enter to display the error message 320 x 200 graphics mode check To check your 320 x 200 graphics mode press 5 and then Enter The screen dis...

Page 114: ...oblem still exists press N and Enter to display the error message 640 x 200 graphics mode check To check your 640x200 graphics mode press 6 and Enter The screen displays three patterned squares against a black background as shown below If the patterns on your screen are clear and distinct press Y and then Enter If any pattern is not displayed clearly check the adjustment of your monitor and be sur...

Page 115: ... then displaying each page in turn You see this pattern for screen 0 When you have examined this screen press any key to display the next page The eight display pages numbered 0 to 7 are displayed sequentially After the eighth page is displayed you see this prompt Is the display correct Y N If all eight pages are correct press Y and Enter If any page is filled with an incorrect number press N and ...

Page 116: ...N If all the colors are correct press Y and Enter to end the test If any color is displayed incorrectly check the adjustment of your monitor and be sure that both ends of the cable are plugged in firmly If a problem still exists press N and Enter to display the error message Sync check This test is provided for service purposes only If you accidentally select this option press any key to end the t...

Page 117: ... have a formatted diskette go on to Starting the floppy disk drive check Formatting a diskette To format a diskette without leaving diagnostics follow these steps 1 From the DEVICE LIST menu press 0 to exit The OPERATION MENU appears on the screen 2 Press 2 and Enter to select Format diskette If you have two diskette drives you see this message and prompt Format Diskette Format in which drive A B ...

Page 118: ...een displays this menu FLOPPY DISK DRIVE S AND CONTROLLER CHECK MENU 1 Sequential seek check 2 Random seek check 3 Write read check 4 Speed check 5 Run all above checks 0 Exit Enter selection number Before any checks are performed the program determines the number of diskette drives installed in or connected to your computer If you have more than one drive you see this prompt each time you select ...

Page 119: ...ead so you see the count twice If no errors occur the menu is displayed Random seek check This test is identical to the sequential seek check except that the seek operation is performed on each track in random order instead of sequential order Select option 2 from the menu to start this test Write read check This test checks the ability of the selected disk drive to read and write data from a disk...

Page 120: ...elect option 4 from the menu to start this test You see a message similar to this The disk rotation speed should be more than 294 0 rpm and less than 306 0 rpm The computer spins the diskette for a few seconds then displays a message like this The disk rotation speed is now 300 0 rpm Note The speed for a 3 inch or 5 f inch drive should be 300 rpm This check permits a tolerance of 2 The diskette co...

Page 121: ...ou need a loop back connector Note that a different connector is required to test the serial port When you select option 9 from the DEVICE LIST you see these prompts Attach loop back connector to parallel port Enter Y to start this check when connector is attached or Enter N to return to the menu Insert the loop back connector Then press Y and Enter to start the check The computer checks the port ...

Page 122: ...The second test is an echo back check during which the port sends data to itself in a fixed data format at all the possible baud rates When this test begins you see these messages RS232C echo back check at various baud rates Current baud rate is 75 Current test data is 0 0 Each baud rate is tested in turn and the display informs you of the progress of the test If the port does not become ready cor...

Page 123: ...on of your printer in IBM compatibility mode l The compatibility of your printer with the extended character set your computer uses l The ability of your printer to produce dot graphics and print images of the graphics screen When you select option 14 from the DEVICE LIST you see this prompt Is dot matrix printer on line Y N Check that your printer is connected to the computer and that it is turne...

Page 124: ...o print our copies of graphics screens Note Even if the test runs only for a short time your printer may store many characters in its buffer To stop printing set the printer off line Hard Disk Drive and Controller Check Use this option to test the performance of the hard disk drive installed in your computer If any errors occur have your dealer check and service the drive When you select option 17...

Page 125: ...multaneously so you see the cylinder numbers only once If no errors occur the menu is displayed Write read check This check tests the ability of the hard disk drive to read and write data The test writes to and reads from each sector of the innermost cylinder of the disk using each head Note This test destroys all data on the innermost cylinder of the hard disk drive This cylinder is reserved for ...

Page 126: ...You see these messages The data on the highest physical cylinder may be destroyed by this check Enter Y to start this check Enter N to return to the menu Press Y and then Enter to continue with the test If no errors occur the menu is displayed An error occurs only if the drive is malfunctioning In this case back up all your files and have the drive serviced immediately The drive may be corrupting ...

Page 127: ...sequence press 5 and then Enter When you choose this option all checks for the hard disk drive and controller are performed automatically in sequential order Although you do not start each test you must still supply the appropriate responses to progress from one test to the next This is the first prompt you see The data on the highest physical cylinder may be destroyed by this check Enter Y to sta...

Page 128: ...NSTRUCTION ERROR Memory 201 MEMORY PARITY ERROR Keyboard 301 8048 ERROR 302 KEYBOARD IS DEFECTIVE Video adapter and display 501 V RAM ERROR 503 ATTRIBUTE ERROR 504 CHARACTER SET ERROR 505 40 COLUMN CHARACTER SET ERROR 506 320 x 200 GRAPHICS MODE ERROR 507 640 x 200 GRAPHICS MODE ERROR 508 SCREEN PAGING ERROR 510 COLOR VIDEO ERROR Floppy disk drives and controller 601 FLOPPY DISK CONTROLLER ERROR 6...

Page 129: ...IGH LOW 1202 TIME OUT ERROR 1203 VERIFY ERROR Dot matrix printer 1401 status error type Hard disk drive and controller 1701 A hard disk controller error RAM 1701 B hard disk controller error interrupt 1701 C drive not ready 1701 D track 0 error 1701 E hard disk controller error Performing System Diagnostics D 25 ...

Page 130: ...drives or one 3 r inch drive and one external 5 t inch drive Hard disk Supports one 20MB hard disk supplied in top option slot Interfaces Parallel Serial Standard 8 bit parallel DB 25S female connector for parallel printer or external 5 t inch diskette drive RS 232C programmable asynchronous DB 9P male connector CRT Color monitor port DB 9P connector Option slots Two proprietary 8 bit input output...

Page 131: ...nal 3 t inch diskette drive plus one 20MB hard disk drive hard disk drive system can support an external 5 f inch diskette drive Keyboard Attached 85 sculpted keys 58 key QWERTY main keyboard 17 key numeric cursor pad 10 function keys user definable Environmental Requirements Temperature Operating range 41 to 95 F 5 to 35 C Storage range 4 to 122 F 20 to 50 C Humidity Operating range 20 to 80 non ...

Page 132: ... LCD 14 2 lb 6 44 kg with backlit LCD Power Requirements 100 120 VAC 200 240 VAC 50 60 Hz NiCad rechargeable battery pack 9 6 volts Options LCD screen Standard reflective type or backlit full transmissive type supertwisted 1 4 aspect ratio 200 x 640 pixels 25 line x 80 characters display Modem 300 1200 full duplex Hayes compatible Carrying case Soft case for carrying computer Cigarette lighter ada...

Page 133: ...of data transmission in which one machine sends data one character at a time to another without either machine preparing for the transmission Backlighting The method by which the electroluminescent element in a backlit LCD screen illuminates the background of the screen Backup An extra copy of a program data file or disk kept in case your working copy is damaged or lost Baud rate A measure of the ...

Page 134: ...ecific function Configuration The particular setup of a group of components For example a typical system configuration consists of a main unit with two diskette drives and an LCD screen connected to a printer Control code A command generated when you hold down Ctrl and press another key on the keyboard that instructs your computer to perform a specific function C P U Central Processing Unit The pi...

Page 135: ...OS command usually a space or a semicolon Device A piece of equipment that is part of a computer system and performs a specific task such as a disk drive a monitor or a printer Diagnostics The tests and procedures the computer performs to check its internal circuitry and set up its configuration DIP switches Small switches on a piece of hardware such as the computer a printer or the modem DIP swit...

Page 136: ...uch data as the standard density format Extension A suffix of up to three characters that can be added to a file name to better identify it File A group of related pieces of information called records or entries stored together on disk Text files consist of words and sentences Program files consist of code and are used by computers to interpret and carry out instructions File name A name of up to ...

Page 137: ...ing system frequently used by programmers Any decimal number between 0 and 255 can be represented by a two digit hexadecimal number Input output I O port See Port Interface A physical or software connection used to transmit data between equipment or programs Kilobyte KB A unit used to measure storage space in a computer s memory or on a disk One kilobyte equals 1024 bytes LCD Liquid Crystal Displa...

Page 138: ...tor The piece of hardware that contains the screen and displays information MS DOS An operating system from Microsoft See DOS Operating system NiCad Nickel Cadmium The rechargeable battery pack inside the Equity LT contains eight nickel cadmium batteries Operating system A collection of programs that allow a computer to control its operations The operating system determines how programs run on the...

Page 139: ...nd tells a computer what to do and how to do it Prompt A message displayed on the computer screen that tells you what action you need to perform next RAM Random Access Memory The portion of the computer s memory used to run programs and store data while you work All data stored in RAM is erased when you turn off the computer so you must store any data you want to save on a diskette or hard disk Re...

Page 140: ...type of serial interface You can easily connect an RS 232C compatible device to the Equity LT Sector A contiguous section of a disk track that provides an address at which the computer can access data Self test The initial diagnostics procedures a system performs to check its hardware Serial The type of interface that transmits data one bit at a time See Interface Parallel Software The programs th...

Page 141: ... backup operation Tracks Addressable concentric circles on a diskette resembling the grooves on a record which help to divide the diskette into separate accessible areas There are 80 tracks on each side of a double sided 720KB diskette and 40 tracks on each side of a double sided 360KB diskette Wildcard A character that represents an unknown character or group of characters The wildcard character ...

Page 142: ...ng hard disk 2 2 2 5 Booting MS DOS 2 3 2 5 Brightness switch 1 16 A 2 C Cable monitor A l parallel 1 7 printer 1 7 1 9 serial 1 9 CAPS LED 3 3 3 8 Caps Lock key 3 3 3 8 Carrying case 1 E 3 Centronics compatible connector 1 7 Changing directories 4 16 17 Character set 3 9 Character set checks D 8 9 Charging battery 1 1 6 3 1 2 Choosing diskettes 3 10 Cigarette lighter adapter 1 E 3 Clock calendar ...

Page 143: ... 12 external 1 1 8 1 10 1 14 2 5 hard 1 15 3 9 10 E 1 inserting diskettes into 3 12 13 lights 3 3 single 3 14 Diskette backing up 3 13 care and handling 3 11 12 choosing 3 10 copying 1 19 22 3 10 3 13 4 8 12 double density 3 10 B 4 double sided 3 10 B 4 formatting 3 11 4 6 7 D 13 inserting 3 12 MS DOS 1 2 problems B 4 5 reading 5 3 reference 1 2 removing 3 12 13 storing 3 11 system 1 2 1 19 types ...

Page 144: ...g 2 2 3 power switch 1 15 2 6 A 9 11 B 5 preparing for use 2 1 6 problems B 5 turning off 3 12 3 15 A 9 11 using 3 10 Hard disk drive and controller checks C 4 D 20 23 error detection and correction check D 22 read verify check D 22 seek check D 21 write read check D 21 22 HELP command 4 19 I Initial screen display 1 17 Inserting diskette 3 12 13 Interface clock calendar RAM E 2 CRT E 1 parallel 1...

Page 145: ...d battery pack 1 6 3 1 E 2 NUM LED 3 3 3 8 Num Lock key 3 3 3 8 O Opening screen 3 4 Operating system diskette 1 2 loading 1 17 19 2 5 3 6 using 4 1 OPERATION MENU D 1 Options 1 E 3 Option slots E 1 P Paging screen check D 11 Parallel cable 1 17 interface 1 1 8 E 1 port 1 7 8 1 13 port check D 17 printer 1 1 6 8 Partitioning hard disk 2 2 3 PATH command 4 18 Pathnames 4 17 Physical characteristics...

Page 146: ...1 14 1 25 27 Seek check D 15 D 21 Selecting CPU speed 3 5 B 6 Selecting test D 2 SELECT program 2 1 2 3 5 Self test internal 1 16 C 1 6 Sequential seek check D 15 Serial cable 1 9 interface 1 1 6 1 9 E 1 port 1 9 1 14 1 22 1 25 27 port check D 17 19 printer 1 1 6 1 9 10 RS 232C port 1 9 E 1 SETMODE command 1 9 Setting date 1 24 Setting time 1 23 24 Setup menu 1 23 Setup program 1 22 28 Single disk...

Page 147: ...er check D 7 attribute check D 8 character set checks D 8 9 color video check D 12 graphics mode checks D 9 10 screen paging check D 11 sync check D 12 W Working copies 1 19 Write protecting diskettes 3 13 14 4 Write protect notch B 4 Write protect switch 3 14 B 4 Write protect tab B 4 Write read check D 21 22 X XTREE command 4 18 I 6 Index ...

Page 148: ... Screen 4 Charging the Battery 5 Connecting a Printer 6 Setting the DIP Switches 7 Turning On 8 Loading MS DOS the Computer 9 Copying System 10 Running Setup Diskettes Exit Real time clock DISKCOPY A B Backlight period Primary serial port Secondary serial port 06 4 5 ...

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Page 150: ...ur publications Please rate the following Excellent Good Fair Poor H Organization of this manual 0 q 0 cl W Technical accuracy q q 0 0 n Completeness of instructions 0 0 0 0 n Clarity of concepts and wording 0 0 0 0 W Quality of examples 0 c7 0 0 W Quantity of examples 0 J 0 0 Comments Address State Zip Please cut out and mail in Thank you EPSON ...

Page 151: ...EPSON America Inc 2780 Lomita Blvd Torrance CA 90505 q r PLACE r STAMP HERE y L1 bl bd I Y rl 4 ...

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