Epson Equity LT User Manual

Epson Equity LT Manual

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  • Epson Equity LT | User Manual - Page 1
    EQUlTY™LT User's Guide Y16499100301
  • Epson Equity LT | User Manual - Page 2
    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
  • Epson Equity LT | User Manual - Page 3
    . 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 when the operating instructions are followed. Adjust only those controls that are covered by the operating instructions since improper adjustment
  • Epson Equity LT | User Manual - Page 4
    EPSON® Equity™ LT User's Guide
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    Epson Corporation makes no representations or warranties, either express or implied, by or with respect to anything in this manual TRADEMARKS Epson is a registered trademark of Seiko Epson Corporation. Equity is a trademark of Epson America Epson Corporation Nagano, Japan ii Y16499100301 User's Guide
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    in strict accordance with the manufacturer's instructions, may cause interference to radio its peripheral devices. To further isolate the problem: Disconnect the peripheral devices and their input Epson peripheral devices, you can obtain the proper shielded cable from your dealer. For non-Epson Guide
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    User's Guide
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    1 How to Use This Manual 2 1 Setting Up Your Setup program 1-28 2 Preparing a Hard Disk for Use 2-1 Creating the MS-DOS Partition 2-2 Formatting the MS-DOS Partition 2-3 Copying the Reference Files to the Hard Disk . . . . 2-5 Booting From the Hard Disk 2-5 Drive Assignments 2-6 Hard
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    Caring for the Backlit Screen 3-7 Special Keys on the Equity LT Keyboard 3-7 The Equity LT Character Set 3-9 Using Disks and Disk Drives 3-9 How disks work 3-9 Choosing diskettes for the Equity LT 3-10 Caring for disks and disk drives 3-11 Inserting and removing diskettes 3-12 Making backup
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    Equity LT 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
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    Parallel Port (Printer Interface) Check D-17 Serial Port (RS-232C) Check D-17 Alternate Serial Port Check D-19 Dot-matrix Printer Check D-19 Hard Disk Drive and Controller Check D-20 Seek check D-21 Write, read check D-21 Error detection and correction check D-22 Read, verify check D-22 Run
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    E Equity LT Specifications E-1 CPU and Memory E-1 Controllers E-1 Interfaces E-1 Power Supply E-2 Mass Storage E-2 Keyboard E-2 Environmental Requirements E-2 Physical Characteristics E-3 Power Requirements E-3 Options E-3 F Glossary F-1 Index I-1 Tables 1-1 Keyboard DIP switch
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    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 you to use 360KB diskettes from a computer that has a 5 7 -inch drive. Epson offers a 300/1200
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    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
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    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
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    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
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    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
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    2. Use a flat blade screwdriver to lift off the plastic cover on the front of each arm, as shown below. Set the covers aside. 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.
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    4. Pick up the screen with both hands and insert it into the arms of the computer. 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
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    3 Connecting the AC Adapter Follow these 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
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    as possible with your new computer. 5 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
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    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
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    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
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    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 program (or the MODE command), described in your MS-DOS manual. Setting Up Your System 1-9
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    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
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    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.
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    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
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    is primary 1 I2 ON 1 OFF I I 3 I I 4 I I ON OFF ON OFF ON 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
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    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. hardware problem you cannot solve after reading Appendix B on troubleshooting or performing the system diagnostics in Appendix D, consult your Epson dealer
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    for the first time. 1. Before you turn on the computer, turn on any peripheral devices such as a printer, an external diskette drive, or a color monitor. 2. 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
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    The power indicator above the keyboard lights up, and after a few seconds, the computer begins to perform an internal self test. This is a diagnostics program the computer runs whenever you turn it on. The power-on diagnostics self test checks the RAM (random access memory), keyboard, system board,
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    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 before you start using the operating system with your Equity LT. But for now, follow the instructions below to load MS-DOS and make working copies
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    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
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    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
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    Copy another diskette (Y/N)? prompt displays, press N to return to the MS-DOS A> prompt. Copying with one diskette drive 1. If it is not already in the drive, insert your MS-DOS system diskette in drive A (and press any key, if necessary). The A> prompt should be on the screen. 2. Type: DISKCOPY and
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    it has copied all the files from memory, DISKCOPY displays these prompts on the screen: Insert SOURCE diskette in drive A: Press any key when ready . . . 5. Remove the copy diskette from the drive and insert the original MS-DOS diskette. Press any key. The program copies the rest of the files from
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    diskette. Follow the instructions above and the prompts on the screen to copy the reference diskette. When you finish and the Copy another diskette (Y/N)? prompt appears, press N to return to the MS-DOS A> prompt. 10 Running the Setup Program If this is the first time your Equity LT has been used
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    and press Enter. The Setup menu displays on the screen: Exit Real-time clock Backlight period Primary serial port Secondary serial port 1 select function, Enter exit program Setting the real-time clock Your computer automatically keeps track of the time and date using a real-time clock. Because the
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    change. 3. To set the date, press 1 to move the cursor block to Date and press Enter. You see the following: mm-dd-yyyy Enter the date in the exact form shown feature is designed mainly for the backlit model screen, follow these instructions if you have the standard model to select no time limit.
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    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 Setup menu. Changing the serial port (RS-232C) settings Use the Primary serial port and Secondary serial port options to change the default parameters for the
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    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 bits 1 bit(s) * * * SAVE SETTINGS * * * Note Check the manual that came with the serial device you are using to determine which settings to
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    The cursor block is on the Baud rate option. To change the speed of communication, press Enter. The screen displays the following: 110 bps 150 bps 300 bps 600 bps 1200 bps 2400 bps 4800 bps 9600 bps 19200 bps 38400 bps Use 1 and t to move the cursor block to the desired communication speed and press
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    A, remove it and insert the MS-DOS diskette in the drive. If the computer displays a Setup error message during the power-on self test, run Setup again and check all your settings. Note If you have the hard disk model Equity LT, go on to Chapter 2 and complete all the procedures there to prepare
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    all the data on the hard disk. These instructions apply only to a new hard disk. The hard disk inside the Equity LT has a capacity of 20 manual) to back up your hard disk files. Even though the hard disk has a lot of storage space, it is best to keep only those files you use regularly on the hard
  • Epson Equity LT | User Manual - Page 45
    not have 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 on your hard disk for MS-DOS. 1. Turn on the hard disk (if it is not on already). 2. Insert the working copy of your MS-DOS system diskette in drive A.
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    drive A). Your computer begins reloading MS-DOS. After the preliminary copyright information displays on the screen, the date prompt displays. 8. Press Enter twice to accept the date system files to the hard disk. After you have done this, MS-DOS boots automatically from the hard disk every time you
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    substitute other codes, see your MS-DOS manual. The screen displays this message and prompt: : WARNING, ALL DATA ON NON-REMOVABLE DISK DRIVE C: WILL BE LOST! Proceed with Format (Y/N)? for the hard disk to protect it from being accidentally formatted later. If you want to name the hard disk,
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    your MS-DOS manual. Copying the Reference Files to the Hard Disk Follow the instructions below to copy the files on your reference diskette to the hard disk. If you want to store them in a separate subdirectory, see Chapter 4 for instructions. 1. Remove the MS-DOS diskette from drive A and insert
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    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
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    the computer, toward the back), is illuminated. Because the adapter can operate at 100 to 120 and 200 to 240 volts, you can use your Equity LT in other countries (with the appropriate adapter plug). Use the adapter to recharge the battery as described in the next section. Using the Battery The
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    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 you are using a hard disk, the backlit screen, or an external diskette drive, however, the time is shorter. 3-2 Using the Equity LT
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    the drive if the light is on. If you connected an external diskette drive, it should have its own LED. The CAPS, NUM, and SCROLL LEDs indicate whether the Caps Lock, Num Lock, and Scroll Lock key functions are enabled. (See "Special Keys on the Equity LT Keyboard" below.) Using the Equity LT 3-3
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    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
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    bottom of the computer as shown below. Be sure the screen is closed whenever you 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
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    . The screen goes blank for a moment and then MS-DOS reloads. (MS-DOS must either be on the diskette in drive A or on the hard disk.) If this does not correct the problem, try the second method. 2. Use a pencil or a similar type of thin pointed object to press the RESET button above the
  • Epson Equity LT | User Manual - Page 56
    minutes. When you ran the Setup program in Chapter 1, you may have changed this backlight period. (For instructions see "Changing the backlight period" instructions in Appendix A to install it. If you do not want to replace it yourself, ask your dealer to do it for you. Special Keys on the Equity LT
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    off. When the function is enabled, the corresponding LED above the keyboard is on; when the function is disabled, the light is off. 3-8 Using the Equity LT
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    your Epson dealer for more information. Using Disks and Disk Drives The disk drives 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
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    in a 5 + -inch drive or vice versa. However, if you have both types of drives, (720KB and 360KB), you can copy individual files from one drive to the other with the COPY command. See Chapter 4 in this manual or your MS-DOS manual for instructions on the COPY command. 3-10 Using the Equity LT
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    want to erase. See Chapter 4 or your MS-DOS manual for instructions on how to format diskettes. Caring for disks and disk drives To avoid damaging your diskettes and hard disk, you need to care for them properly. Take of your diskettes and make sure they do not get bent. Using the Equity LT 3-11
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    to conserve the computer battery's charge. See "Turning Off the Hard Disk" in Appendix A. Inserting and removing diskettes To insert a diskette into a disk drive, hold it with the label facing up and the arrow on the left side pointing into the computer as shown below. 3-12 Using the Equity LT
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    the drive indicator Equity LT 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 hard disk. For more information, see your MS-DOS manual
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    place in the drive. When copying is drive in your left hand and the diskette for the other in your right. You should also write-protect your source diskette so you don't accidentally copy on to it. For more information on using one diskette drive with MS-DOS, see Chapter 4. 3-14 Using the Equity LT
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    , exit 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
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    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
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    is set to boot MS-DOS automatically, be sure that no diskette is in drive A. MS-DOS loads automatically from the hard disk when you turn on the computer. See Chapter 2 for more information on the hard disk. 5. Press Enter twice to accept the date and time shown. 4-2 Using MS-DOS With the Equity LT
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    loaded and indicates the current drive followed by a greater-than symbol: A> If MS-DOS loads from the hard disk, the screen displays: c> This prompt tells you that you can now enter commands to instruct MS-DOS to perform l Press ESC to cancel the command line. Using MS-DOS With the Equity LT 4-3
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    All your work and programs are stored in files on your diskettes or hard disk. Each file must have a unique filename so you can retrieve it by telling MS-DOS on which drive the file is stored. To do this, you type the letter-A, B, or C-of the disk drive where the file is located, With the Equity LT
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    the A > prompt, type: B: Be sure to type the colon. 2. Press Enter. Your screen now displays the B> prompt. This means that MS-DOS is now using drive B. The system continues to read from drive B, which is now the default drive, until you log back onto drive A. Using MS-DOS With the Equity LT 4-5
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    configuration of your system: l Two diskette drives l One 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
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    the MS-DOS system prompt. Formatting with one diskette drive 1. Insert your working copy of the MS-DOS system diskette in drive A (and press any key if necessary) or log on to drive C (the hard disk) by typing C:. 2. When you see prompt by pressing N and Enter. Using MS-DOS With the Equity LT 4-7
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    -DOS manual. Copying with two 3 $ -inch diskette drives 1. First be sure your original diskette is write-protected. (See Chapter 3 for instructions.) 2. Insert the working copy of your MS-DOS system diskette in drive A. 3. At the A> prompt, type: DISKCOPY A: B: 4-8 Using MS-DOS With the Equity LT
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    be sure your original diskette is write-protected. (See Chapter 3 for instructions.) 2. Insert the working copy of your MS-DOS system diskette in drive A or type C: to log on to drive C, the hard disk. 3. At the A> or C> prompt, type: DISKCOPY and press Enter. Using MS-DOS With the Equity LT 4-9
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    these messages: Insert TARGET diskette in drive A: Press any key when ready . . . 5. Remove the diskette from drive A and insert the blank diskette in the drive. DISKCOPY checks to see if the new memory to the diskette. Follow the instructions on the screen. 4-10 Using MS-DOS With the Equity LT
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    diskette you want to copy from in the external diskette drive (B) and press Enter. DISKCOPY copies the contents of the diskette to the computer's memory. Then the screen displays these messages: Insert TARGET diskette in drive B: Press any key when ready . . . Using MS-DOS With the Equity LT 4-11
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    B 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: the target file. l You cannot create a new file with the same name as an existing file. 4-12 Using MS-DOS With the Equity LT
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    character. To copy all the files on the diskette in drive A to the diskette in drive B, type: COPY A:*.* B: To copy to drive B all the files on drive A that begin with the same four letters but are followed by a single letter that varies, type: COPY A:file? B: Using MS-DOS With the Equity LT 4-13
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    or hundreds is difficult. The simple solution to this problem is to divide a directory into subdirectories. There are four basic operations you need to know to create and use subdirectories: l Creating subdirectories l Changing subdirectories l Using pathnames 4-14 Using MS-DOS With the Equity LT
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    To see how all four basic subdirectory operations work, follow the instructions below. These examples use a few MS-DOS commands that you your MS-DOS manual. Creating subdirectories Starting at the A> prompt (for the dual diskette model) or the C> prompt (for the hard disk model), first Equity LT 4-15
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    that the new directory is a subdirectory of the root directory, and LETTERS is the name of the new directory. 4-16 Using MS-DOS With the Equity LT
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    as putting them on separate disks. You have to specify the pathname or change directories to access files in different Using MS-DOS With the Equity LT 4-17
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    of subdirectories, see the following subjects in your MS-DOS manual: XTREE, PATH, and AUTOEXEC.BAT files. Starting an Application drive A and insert your application program diskette. From this point on, the documentation that comes with your application program will give you instructions Equity LT
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    on the Equity LT. Three commands described in the manual are not on your MS-DOS diskette: HELP, ROMBIOS, and SYSTAT. These files are on your reference diskette. If you want to use them, be sure to insert the reference diskette in the drive or log on to the directory on your hard disk where
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    the backlit screen element. It also explains how to turn off the hard disk if you are running the computer on its battery. Connecting a Color Monitor If you bought a color monitor to use with your Equity LT, follow the instructions below to connect it to the computer. 1. Be sure both the computer
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    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
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    Set the switch tops aside in 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
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    5. Turn the screen over and lay it on a flat surface (such as a table) so you are looking at the back. Locate the small plastic screw cover 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
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    8. Carefully lift off the front cover of the screen 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
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    10. Also on the right side, near the top, is a connector that connects the 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
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    12. Grasp the tan-colored tab from which you unplugged the connector and carefully pull it out of the screen. This removes the electroluminescent element, as shown below. The element is flexible, so it is all right if you bend it slightly as you pull it out. 13. Slide the new element into the
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    16. Replace the latch mechanism you removed in step 9. Be careful to seat it properly, as shown below. Also be sure the one on the left side is properly aligned. 17. When all the components are seated inside the screen, replace the front cover you removed in step 8. Be sure the cover fits correctly
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    avoid drive access problems, it is best to leave the hard disk switch on at all times. However, if you are using the computer without the AC adapter, you may want to turn the hard disk off when you are not using it to conserve the charge of the computer's battery. The hard disk drive uses
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    operating system is copied to the computer's memory; however, all the MS-DOS programs remain only on drive C and are not copied to memory. When you turn off the hard disk, the computer no longer has a drive C. This means that if you type a command such as DISKCOPY, the operating system will not be
  • Epson Equity LT | User Manual - Page 94
    4. After you log on to drive A, you can turn off the hard disk. 5. Continue using the 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
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    described in Appendix D. If you cannot resolve the problem, consult an Epson dealer about servicing the computer. WARNING 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
  • Epson Equity LT | User Manual - Page 96
    screen, follow these steps to solve the problem: 1. Use the contrast switch (and DIP Switches" in Chapter 1 for instructions.) 3. Remove any diskettes, then turn . (See Chapter 1 for instructions.) Wait at least five seconds follow these steps to solve the problem: 1. Be sure the power switches
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    it according to the instructions in Chapter 3. The battery inside the Equity LT should last as long as the computer does. If, however, the battery seems to be running low sooner than it should after being recharged, you can test it by following the steps on the next page. Troubleshooting B-3
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    Problems If you have trouble drive. 3. Is the diskette write-protected? The write-protect switch may be set on a 3 + -inch diskette or there may be a writeprotect tab over the notch of a 5 d -inch diskette. Before you move the switch or remove the tab, check the directory B-4 Troubleshooting
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    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 program does not start
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    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 follow all the instructions in your software manual on installing a printer. B-6 Troubleshooting
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    Appendix C Power-on Diagnostics The built-in memory (ROM) of your computer contains a series of diagnostics programs. These programs are run automatically by the system every time you turn on the power. The diagnostics programs check the internal devices such as ROM, RAM, keyboard controller, timer,
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    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
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    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
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    The computer next checks the hard disk controller and drive unit. If a malfunction is found in the hard disk controller, 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
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    main unit and peripheral devices of your Equity LT. You check these devices using the diagnostics steps: 1. Insert the reference diskette in drive A. 2. Turn on or reset the computer automatically and displays the main menu: OPERATION MENU 1 - Setup 2 - Format diskette 3 - System diagnostics 0 - Exit
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    and controller 9 - Parallel port (printer interface) 11 - Serial port (RS-232C port) 14 - Dot-matrix printer 17 - Hard disk drive and controller 0 - Exit Enter selection number: Selecting a Test From the DEVICE LIST, select the device to be tested. Type the number of the device, then
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    error occurs during a test, the test stops at that point, and an error code and error message are displayed. If you want to record 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
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    V30 CPU chip are extremely comprehensive. They ensure that the CPU instruction set is functioning correctly. If an error occurs, write down the error code and message, or print them out, and contact your Epson dealer. Attempting to correct system board errors yourself may violate your
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    message is usually: 640 KB OK If an error is reported, write down the error code and message, or print them out, and contact your 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
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    the international keyboard layouts in the MS-DOS manual. If any key is incorrect, press N and Enter , or print them out, and contact your Epson dealer. Video Adapter and Display Check Use this several checks that allow you to identify particular problems related to the color display. If you are
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    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
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    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
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    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
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    any colors are 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. 640 x 200 graphics mode check To check your 640x200 graphics mode, press 6 and Enter
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    Screen paging check To check the screen paging of your monitor, press 7 and Enter. The video RAM on the video adapter is divided into eight independent display pages. This test checks the eight pages by first filling all eight with a number corresponding to the page, and then displaying each page in
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    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 test. Run
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    Use this option to test the performance of the floppy disk (diskette) drives inside or connected to your computer. This test includes several checks that allow you to identify particular problems related to your diskette drives. To run these tests, you need a formatted diskette so the tests can
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    this prompt each time you select a test: Check which drive (A/B)? Press A or B and then Enter. If any errors occur during the checks, record the error code and message and contact your Epson dealer. Always have the diskette drive serviced by your Epson dealer. D-14 Performing System Diagnostics
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    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 diskette. The test writes to and reads from each cylinder on the diskette, starting at the center. Note This
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    is 79 Speed check This test checks the revolution speed of the specified disk drive. Select option 4 from the menu to start this test. You see a 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 continues to spin,
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    checks To run all the tests on the menu in sequence, press 5 and Enter. When you choose this option, all checks for the diskette drive(s) and controller are performed automatically in sequential order. Although you do not start each test, you must still supply the appropriate responses to progress
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    insert a special loop-back connector into the RS-232C port so that the computer can check individual pins of the port. Contact your dealer if you need a loop-back connector. Note that a different connector is required to test the parallel port. When you select option 11 from the DEVICE LIST, you see
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    Once again, if any data received does nor march the data a verify error occurs, and the computer reports the transmitted and received data at the rime of the error. Alternate Serial Port Check If you have turned on DIP switch 4 on the back panel, select option 12 to test the serial communications (
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    software. The dot graphics data is sent to the printer using a command (ESC K) compatible with Epson and 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
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    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 diagnostics and is never used for storage by MS-DOS. Therefore, data created by MS-DOS is not destroyed
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    detection and correction check This test checks the ability of the hard disk drive to detect a read/write error and to correct the data accordingly 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 your
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    To run all the tests on the menu in 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
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    Video adapter and display 501 503 504 505 506 507 508 510 Floppy disk drives and controller 601 602 603 604 605 Parallel port 901 Serial port yg232c) CONTROLLER ERROR 146818 CMOS BATTERY ERROR 146818 CMOS CHECKSUM ERROR V30 INSTRUCTION ERROR MEMORY/PARITY ERROR 8048 ERROR KEYBOARD IS DEFECTIVE V-RAM
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    1701-E Message ERROR DTR DSR, DSR ALWAYS HIGH/LOW ERROR RTS CTS, CTS ALWAYS HIGH/LOW TIME OUT ERROR VERIFY ERROR status: error-type hard disk controller error (RAM) hard disk controller error (interrupt) drive not ready track 0 error hard disk controller error Performing System Diagnostics D-25
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    Appendix E Equity LT Specifications CPU and Memory 16-bit CPU pPD70116 V30 microprocessor; 4.77 or 10 MHz clockrate, switch-selectable 20-bit address and 16-bit data bus Main memory 640KB RAM (with parity) on main board ROM 16KB Controllers Floppy disk Hard disk Supports up to two drives;
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    drives maximum: two internal 3 t -inch diskette drives or one internal 3 t -inch diskette drive plus one 20MB hard disk drive; hard disk drive system can support an external 5 f -inch diskette drive 20% to 80% (non-condensing) Storage range: 5% to 90% (non-condensing) E-2 Equity LT Specifications
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    345 mm) Height Weight 3.2" (79 mm) Dual diskette drive system: 12.6 lb (5.72 kg) with standard LCD 13.1 lb (5.94 kg) with backlit LCD Hard disk drive system: 13.7 lb (6.22 kg) with standard LCD 300/1200 full duplex, Hayes@-compatible Soft case for carrying computer Equity LT Specifications E-3
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    Appendix F Glossary Application program A software program designed to perform a specific task, such as a word processing or spreadsheet program. ASCII American Standard Code for Information Interchange. A standardized coding system for representing
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    software program or part of a program. Command An instruction you enter on the keyboard to direct your computer to perform a specific 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
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    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 a part of a disk. Disk The collective term for both diskettes and hard disks. Glossary F-3
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    and write to a disk. A diskette drive has a disk slot into which you insert a diskette. A hard disk is permanently fixed inside the main unit Program files consist of code and are used by computers to interpret and carry out instructions. File name A name of up to eight characters that MS-DOS uses to
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    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 Display. The technology that displays characters on the Equity LT screen
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    . 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
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    errors in transmitting or receiving data. Partition To divide a hard disk drive into separate sections for use by different operating systems. Peripheral Power-on diagnostics See Diagnostics. Program A disk file that contains coded instructions and tells a computer what to do and how to do it.
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    of the root directory. RS-232C A widely-used, standard 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
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    Subdirectory A directory or group of files that branches down from another subdirectory or from the root directory. Switch An option added to an MS-DOS command that redirects the way the command works. Switches must be preceded by a / (forward slash). For example, if you add the /S switch to a
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    13 Bad tracks, hard disk, D-23 Battery, charging, 1, 1-6, 3-1 -2 problems, B-3 -4 using, 3-1 -2 Board check, system, D-4 Booting hard disk, 2-2, 2-5 1-19, 4-3 CON: command, 4-15-16 Connecting, AC adapter, 1-5 -6, 3-2 external drive, 1-10 monitor, 1-10, A-1 -2 printer, 1-6 -10 screen, 1-2 -4 Contrast
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    3-6 D Data diskette, copying, 3-13, 4-8-12 DATE command, 1-23 DB-9P, 1-9, E-1 DB-25S, 4-8 -12 Disk drive, assignments, 1-14 caring for, 3-11-12 external, 1, 1-8, 1-10, 1-14, 2-5 hard, 1-15, 3-9- 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-
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    13 booting, 2-2, 2-5 care of, 3-12 naming, 2-4 partitioning, 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
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    , A-l color, 1, 1-10, A-1 -2 connecting, 1-10, A-1 -2 controls, B-2 problems, B-2 -3 MS-DOS, booting, 4-2 command prompt, 1-19, 4-3 commands, 4-3 copying POWER LED, 3-3, 3-6 Power-on diagnostics (self test), 1-16, C-1 -6 Preparing hard disk, 2-1 -6 Primary serial port, 1-14, 1-25 -27 Printer, cable,
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    Setting date, 1-24 Setting time, 1-23-24 Setup menu, 1-23 Setup program, 1-22 -28 Single diskette drive, using, 3-14 Slots, option, E-1 Software, problems, , 1-23 Turning off backlighting, 3-7 Turning off computer, 3-15 Turning off hard disk, 3-12, 3-15, A-9 -1 Turning on computer, 1-14 Index I-5
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    U Unpacking, 1-1 -2 Using AC adapter, 3-1 -2, 3-12 Using battery, 3-1 -2 Using Equity LT, 3-1 Using handle, 1-1 -2 V Video adapter, display check, adapter 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
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    10 Steps to Setting Up the Equity LT 1 Unpacking 7 Connecting the Screen 4 Charging the Battery 5 Connecting a Printer 6 Setting the DIP Switches 7 Turning On the Computer 8 Loading MS-DOS 9 Copying System Diskettes DISKCOPY A: B: 10 Running Setup Exit Real-time clock Backlight period
  • Epson Equity LT | User Manual - Page 149
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    . Your comments and suggestions will help us improve our publications. Please rate the following. H Organization of this manual W Technical accuracy n Completeness of instructions n Clarity of concepts and wording W Quality of examples W Quantity of examples Excellent Good Fair Poor 0 q 0 cl
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    EPSON America, Inc. 2780 Lomita Blvd. Torrance CA 90505 . qPLACE STAMP HERE . : : r r y . . L1 . . bl . . bd . I . . Y . . . . . . . . . rl . . . . . . 4 . . .
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EQUlTY™LT
User’s Guide
Y16499100301