Instruction/ maintenance manual of the product EL 486UC Epson
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EPSON ® EL 486UC User’s Guide This manual is printed on recycled paper and is 100% recyclable..
FCC COMPLIANCE STATEMENT FOR AMERICAN USERS This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
IMPORTANT NOTICE DISCLAIMER OF WARRANTY Epson America makes no representations or warranties, either express or implied, by or with respect to anything in this manual, and shall not be liable for any implied warranties of merchantability and fitness for a particular purpose or for any indirect, special, or consequential damages.
Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. 8. 9. 10 Read all of these instructions and save them for later reference. Follow all warnings and instructions marked on the computer. Unplug the computer from the wall outlet before cleaning. Use a damp cloth for cleaning; do not use liquid or aerosol cleaners.
11. If you use an extension cord with the computer, make sure the total of the ampere ratings of the devices plugged into the extension cord does not exceed the ampere rating for the extension cord. Also, make sure the total of all products plugged into the wall outlet does not exceed 15 amperes.
Instructions Importantes de Sécurité 1. 2. 3. 4. 5. 6. 7. 8. 9. Lire completement les instructions qui suivent et les conserver pour references futures. Bien suivre tous les avertissements et les instructions indiqués sur l’ordinateur. Debrancher l’ordinateur de toute sortie murale avant le nettoyage.
11. Dans le cas où on utilise un cordon de rallonge avec l’ordinateur, on doits' assurer que la valeur totale d’amperes branches dans le cordon n’excede en aucun temps les amperes du cordon de rallonge. La quantité totale des appareils branches dans la prise murale ne doit jamais exceder 15 amperes.
Contents Introduction VGA Utilitie s ...................... Optional Equipment ................. Microprocesso r .................. Mathcoprocessor ................ Memor y ...................... Drive s ....................... How to Use This Manua l .
Enabling an External Cache ................. . l-19 Setting Shadow ROM Options ................ . l-19 Remapping Memory ..................... . l-19 Using Other Shadow Options ................ . l-20 Exiting the SETUP Program ................. . l-20 Post-SETUP Procedures .
Chapter 4 Installin g an d Removing Drives Installing a Hard Disk Drive in the Internal Drive Bay . . . . . 4-2 Removing the Mounting Frames . . . . . . . . . . . . . . . 4-3 Connecting the Hard Disk Drive Cables . . . . . . . . . 4-3 Installing the Hard Disk Below the Mounting Bracket .
Memory Module Problems .................... . 6-12 Mouse Problems ........................... 6-12 Controller Problems ........................ . 6-13 External Cache Problems ..................... . 6-13 Appendix A Specifications CPU and Memory ......
Introduction Your new Epson ® EL 486UC computer is a fast, high-performance, all-in-one system offering flexibility and expandability in a compact design.
The shadow RAM feature speeds up processing by moving the system and video BIOS into the RAM area of memory. With 512KB of video RAM, the VGA controller supports standard resolutions up to 640 x 480 in 16 colors and extended resolutions up to 640 x 480 in 256 colors or 1024 x 768 in 16 colors (interlaced or non-interlaced).
Math coprocessor You automatically install a math coprocessor when you upgrade your system with a 486DX microprocessor, because the coprocessor is built into the 486DX chip. Memory By adding 1MB, 4MB, 8MB, and 16MB SIMMs (single inline memory modules) to the main system board, you can expand the computer’s memory up to 32MB.
Chapter 2 covers general operating procedures such as resetting the computer, using the password, and changing the processor speed. Chapter 3 describes how to remove and replace the computer’s cover, change jumper settings, and install optional equipment such as microprocessor upgrades, option cards, and memory modules.
Assistance in locating your nearest Authorized Epson Reseller or Service Center Sales of ribbons, supplies, parts, documentation, and accessories for your Epson product Sales of Epson computers and ac.
Chapter 1 Setting Up Your System This chapter briefly describes how to set up your computer. It includes the following information: Getting started Connecting the computer Running the SETUP program Post-SETUP procedures. Getti n g Started Follow the instructions below for choosing a location for your new system and unpacking it.
Good air circulation. Leave several inches of space around the computer so air can move freely. No electromagnetic interference. Do not place your system too close to any electrical device, such as a telephone or television, which generates an electromagnetic field.
Connecting the Computer Use the illustration below to locate the ports on the back of your system as you connect the keyboard, monitor, printer, and other devices. Connecting a Keyboard To connect a keyboard, hold the cable connector so the arrow on the connector faces up.
When you install the drivers for your mouse, make sure you identify the port to which you connected it. See the README file on the diskette that came with your mouse for more information. Connecting a Monitor The way you connect your monitor to the computer depends on the type of monitor you have.
6. Plug the other end of the power cord into an appropriate grounded electrical outlet or into the power outlet on the back of the system. Caution Before you plug the monitor’s power cord into the back of your computer, make sure the monitor’s power requirements do not exceed 1 Amp.
Using the serial ports If you have a printer, a modem, or a mouse with a serial interface, you can connect it to one of the serial (Rs232C) ports on the back of the computer. Make sure you have a cable compatible with a DB-9P connector. To connect a serial device, insert the connector into one of the ports marked COM1 and COM2.
Turning On the Computer After you set up your system, you are ready to turn on the power. Use the illustration below to identify the parts of your system.
Follow these steps to turn on your system: 1. 2. 3. 4. 5. Turn your computer around so the front panel faces you. Place your monitor, printer, and other devices in a convenient arrangement. If there is a protective card in the diskette drive, remove it now.
Running the SETUP Program You need to run the SETUP program the first time you use your computer. If your system was configured for you, you may still need to set the date and time. If your system came unconfigured, you need to define how it is set up.
Starting the SETUP Program You can run SETUP whenever you see the operating system command prompt, such as: C:> or A:> To start SETUP, hold down Ctrl and Alt, then press S.
Whenever you are in the SETUP program, the bottom of the screen lists the keys you can press to perform specific functions. Displaying System Information The SETUP program provides a system informatio.
Setting the Diskette Drive(s) On your system, diskette drive A is the 3.5-inch high-density drive installed in the lower drive bay on your system. You may also have another drive of a different size or capacity; this is drive B. Check the settings for both drives and correct them if necessary.
Hard disk drive types The table below lists standard hard disk drives. Check this table and your drive documentation to find the correct type number. If none of the types listed matches your drive, see page 1-15.
Hard disk drive types (continued) 1-14 Setting Up Your System.
Defining your own drive type If the parameters for your hard disk (listed in its documentation) do not match any of the types listed in the table above, you can define your own type. Follow these steps: 1. 2. 3. 4. Move your cursor to Hard Disk 1 or 2 and press + or - until you see drive type 48 or 49.
Checking System Memory Your computer comes with 4MB of RAM on a SIMM. DOS and application programs that run under DOS use the first 640KB of memory. You can use the memory above 1MB as extended memory. When you boot your system, the system BIOS detects the type of RAM and updates the total memory size automatically.
Video display type options Setting Keyboard Options Two options in the SETUP program allow you to control keyboard settings: the Keyboard option and the NumLock on at boot option. For this system, the Keyboard option in the SETUP program has no effect.
Setting the Processor Speed The CPU Speed option sets the processor speed to fast or slow. At fast speed, your processor operates at its fastest speed (25,33, 50, or 66 MHz, depending on the speed of your microprocessor). At the slow speed setting, the processor operates at 8 MHz to provide compatibility with older application programs.
Enabling an External Cache If you have installed external cache in your system, set the External Cache option to Enabled.You must also set your shadow video and BIOS options to Cacheable or WP-Shadow. Setting Shadow ROM Options Your computer can access RAM faster than ROM.
Using Other Shadow Options Eight additional shadow options are available, allowing you to shadow 16KB at the memory address listed on the screen. You may want to enable one or more of these shadow options if you are using option cards that contain ROM.
Post-SETUP Procedures After you run SETUP for the first time, you may need to install the operating system on your computer. See your operating system manual for instructions. Once you have installed your operating system, install any software you plan to use.
Chapter 2 Using Your Computer This chapter briefly describes the following operations: Inserting and removing diskettes Stopping a command or program Resetting the computer Using the password Changing the processor speed. Inserting and Removing Disks To insert a diskette into a 3.
To insert a diskette into a 5.25-inch drive, hold the diskette with the label facing up and the read/write slot leading into the drive. When you want to remove the diskette, make sure the drive light is off; then press the release button or turn the latch.
Resetting the Computer Occasionally, you may want to clear the computer’s current settings or its memory without turning it off. You can do this by resetting the computer. For example, if an error occurs and the computer does not respond to your keyboard entries, you can reset it to reload your operating system and try again.
Using a Password If you set a password when you ran the SETUP program, you must enter it every time you turn on or reset the computer. Follow these steps to use your password: 1. If you do not have a hard disk, insert your operating system diskette in drive A.
Changing the Processor Speed Your computer’s processor can operate at two speeds: fast speed (the speed of your microprocessor) or slow speed (8 MHz). The slow speed is available to provide compatibility with older application programs. When your computer is operating at fast speed, the TURBO light on the front panel is on.
Note You can use the commands listed above while you are running a program. However, if the program uses one of these commands for another function, you cannot use it to change the processor speed. You can, however, change the processor speed through the SETUP program.
Chapter 3 Installing and Removing Options You can enhance the performance of your computer by adding optional equipment such as system, video, or cache memory modules, option cards, or a microprocessor upgrade. This chapter first describes how to remove your computer’s cover to install options and how to replace the cover when you are finished.
Removing the Cover You need to remove the computer’s cover to install any of the options described in this chapter or to install or remove a disk drive (as described in Chapter 4). Follow these steps to remove the cover: 1. Turn off the computer and then any peripheral devices (including the monitor and printer).
6. Grasp the sides of the cover and lift it straight up, as shown below: 7. Set the cover aside. 8. Ground yourself to the computer by touching the metal surface of the back panel.
Replacing the Cover When you are ready to replace the computer’s cover, follow these steps: 1. Make sure all the internal components are installed properly. 2. Check all cable connections, especially those that might have been loosened during your work.
Locating the Internal Components As you follow the instructions in this chapter, refer to the illustration below to locate the different components inside your computer.
Changing the Jumper Settings The main system board in your computer has a number of jumpers that control certain functions. These jumpers are preset at the factory to default positions. See the illustration below to locate the jumpers on the system board.
Use the information in the following tables to change jumper settings, if necessary. Jumper settings t If you change this jumper setting to position 2-3, make sure you select MONO for the video Card option in SETUP.
Drive assignment jumper setting Processor type jumper settings Caution Do not remove jumper J42. If J42 is off, your system cannot write to RAM. 3-8 Installing and Removing Options.
Setting the Jumpers If you need to change any jumper settings, follow these steps: 1. Refer to the illustration on page 3-6 to locate the jumpers. 2. If there are any option cards installed in your computer, you need to remove them to access the jumpers.
To move a jumper from one position to the other, use needle-nose pliers or tweezers to pull it off its pins and gently move it to the desired position. Caution Be careful not to bend the jumper pins or damage any components on the main system board. 4.
Before you install SIMMs, check the following guidelines to ensure that they will work properly: Use only tin-plated, 36-bit, 72-pin, fast-page mode SIMMs that operate at an access speed of 70ns (nanoseconds) or faster. Be sure all the SIMMs operate at the same speed.
3. Position the SIMM at an angle over the empty SIMM socket, as shown below. The components on the SIMM should face the power supply. 4. Push the SIMM into the socket until it is seated firmly in the slot. Then tilt it upright, as shown above, guiding the hole at each end of the SIMM over the retaining post at each end of the SIMM socket.
Removing SlMMs If you need to remove SIMMs from your computer (to install different ones, for example), follow the steps below: 1. Remove any option cards that may be blocking your access to the SIMM sockets.
4. If you are inserting different SIMMs, follow the instructions on page 3-11 to install your new SIMMs. 5. Replace any option cards you removed, as described below, Installing an Option Card This s&ion explains how to install option cards in your computer.
Remove the two retaining screws securing the power supply to the back of the computer and the third retaining screw holding the power supply to the base of the computer, as shown below. Be careful not to disconnect any of the cables. Slide the power supply out of the way.
3. Slide out the slot cover and set it aside. (Store it in a safe place in case you remove the option card later.) 4. Unpack the option card and adjust any switches or jumpers on it, if necessary.
Once the connectors reach the slot, push the card in firmly (but carefully) to insert it fully. You should feel the card fit into place. If it does not go in smoothly, do not force it; pull the card all the way out and try again. 6. Secure the end of the card to the computer with the retaining screw.
2. Remove the two retaining screws securing the option card connector board to the back of the computer, as shown below. 3. Pull the board straight up and out of its socket and set it aside. Replacing the Option Card Connector Board If you removed the option card connector board, follow these steps to replace it.
1. Position the board above its slot and push it straight into the connector, as shown below. 2. Secure the board to the back of the computer with its two retaining screws. 3. Re-install any option cards you removed. See page 3-14. Adding Video Memory Your computer comes with 512KB of video memory.
For the memory to work properly, you must install chips in the following configuration (each bank contains two video memory sockets). Video memory chip configuration 1. Locate the memory chip sockets on the main system board, shown on page 3-5. Bank 0 contains two chips soldered to the system board, so you cannot add video memory in this bank.
If any of the pins are bent, straighten them gently with your fingers or with small tweezers to align them with the other pins. Be careful when you do this; the pins are fragile and can break off easily. 4. Position one of the memory chips over the first empty socket as shown below, aligning the pins on the chip with the holes in the socket.
Installing External Cache You can install either 32KB or 128KB of external cache on your system. Use five DRAM, 28-pin, 8 x 8,20ns or 25ns DIP chips to install 32KB or five 256 x 4,20ns DIP chips to install 128KB of external cache on your system. 1. Locate the external cache sockets on the main system board, shown on page 3-5.
4. 5. 6. Position one of the cache chips over the first socket as shown below, aligning the pins on the chip with the holes in the socket. Make sure the small notch on the end of the chip is aligned with the corresponding notch on the socket. Gently press the chip halfway into the socket (to make sure it is correctly aligned).
10. Run SETUP to enable the External Cache option and check that the Shadow BIOS ROM and Shadow Video ROM options are set to Cacheable or WP-Shadow. Make sure you save your settings as you leave SETUP (see Chapter 1). When the computer restarts, it displays the amount of external cache you have installed on the system.
Possible microprocessor upgrades Installing and Removing Options 3-25.
Replacing the Processor Chip You’ll find it easier to remove your existing microprocessor if you remove the option card connector board. Refer to page 3-17 to remove the option card connector board, then follow these steps to replace the processor chip: 1.
3. Gently pull the processor chip straight up and set it aside. 4. Remove the replacement chip from its package and inspect the pins. If they are bent, do not install the processor chip.
8. If you removed the option card connector board, see page 3-18 for instructions on replacing it. Then replace any option cards you removed. lnstalling a Heat Sink If you are installing a 486DX2/50 or a 486DX2/66 processor, you must install an EG&G heat sink (669-52AB) on the processor chip.
Replacing the Oscillator If you are installing a 486SX/33, a 486DX/33, or a 486DX2/66 processor, you must replace the existing oscillator with an Ecliptek 33 MHz oscillator (EC1100). Follow these steps to remove the existing oscillator and replace it with the new oscillator: 1.
6. Gently push the oscillator into the socket. 7. Secure the oscillator to the system board using a new tie wrap. (If you didn’t buy an upgrade kit, you must obtain the oscillator tie wrap separately.
Chapter 4 lnstalling and Removing Drives This chapter describes how to install and remove optional drives in your computer. You can use these instructions to install a variety of devices, including hard disk drives, a diskette drive, a tape drive, or a CD-ROM drive.
Installing a Hard Disk Drive in the Internal Drive Bay Your computer may have a hard disk drive already installed in the internal drive bay. If not, you can install a l-inch high by 3½ inch wide drive in this bay.
Removing the Mounting Frames If there are mounting frames attached to your hard disk drive, you need to remove them before you can install the drive. Follow these steps: 1. On your drive, there may be a plastic guiderail and metal grounding plate attached to one of the mounting frames.
The hard disk drive ribbon cable is attached to your system board. You may need to remove it, for instance, to install a cable that supports two hard disk drives in this system. See “Connecting the drive cable to the system board,” below, for instructions on reconnecting the cable to the system board.
2. Locate the hard disk drive connector on the system board. 3. 4. Position one of the end connectors so that the red wire aligns with pin 1 of the connector on the system board.
Connecting the drive and power cables to the drive Follow the steps below to connect the hard disk drive ribbon cable and a power supply cable to the drive: 1. Locate the free connector on the end of the hard disk drive ribbon cable. 2. Locate pin 1 on the drive connector.
Caution If you do not correctly align the holes with the pins, you could severely damage your hard disk drive when you push in the cable connector. 5. Locate one of the power supply cables that lead from the power supply. (They have multi-colored wires and a plastic connector on the end.
Installing the Hard Disk Below the Mounting Bracket If you have a l-inch tall hard disk drive, you can install it below the hard disk drive mounting bracket. Refer to the illustrations below and follow these steps: 1. Remove the screw securing the mounting bracket to the base of the computer, as shown below.
4. Align the hard disk drive so that the cables lead toward the diskette drive bays and the four holes at the base of the drive are above the four pegs, as shown below. 5. Gently lower the drive over the pegs. When the hard disk drive is resting on the pegs, it will not move from side to side.
7. Slide the bracket toward the side of the computer, as shown below, until the tabs hold the bracket in place. 8. Secure the mounting bracket with a screw on each side, as shown above. Installing the Hard Disk On the Mounting Bracket You can install a hard disk drive on top of the mounting bracket rather than under it.
2. Lift the mounting bracket out of the computer. 3. Turn the hard disk drive over and locate the four mounting holes on the drive. 4. Position the bracket on the hard disk drive, aligning the holes in the bracket with the holes on the drive. 5. Secure the bracket to the drive with four screws.
6. Turn the drive and the mounting bracket over, then slide the slots in the mounting bracket under the tabs at the base of the computer until the tabs hold the bracket in place.
Removing a Hard Disk Drive From the Internal Drive Bay To remove a hard disk drive, reverse the installation steps outlined above. Then disconnect the hard disk drive ribbon cable and the power supply cable from the back of the drive.
Follow these steps to install a drive in the upper horizontal drive bay: 1. Remove the faceplate from the bay. Place your hand behind the plate through the hole in the drive bay, and push the faceplate forward, as shown below. Keep the faceplate in a safe place in case you remove a drive later.
3. Slide the drive into the bay until it is flush with the front of the computer. 4. Align the slots at the side of the drive bay with the mounting holes in the drive.
Connecting the Drive and Power Cables To connect the drive to the computer, you need to connect both the drive ribbon cable and a power supply cable. Follow the steps below. 1. If you are installing a diskette drive, locate the diskette drive ribbon cable.
If you are installing a hard disk drive in the upper horizontal bay, make sure you use the proper hard disk drive ribbon cable and connect the ribbon cable to the hard disk drive connector.
If you installed a diskette drive in the upper bay, it is drive B; the lower drive is A. However, if you want to reassign the upper diskette drive as drive A, you can change jumpers J35 through J38. See Chapter 3 for instructions. Removing a Drive from the Upper Drive Bay To remove a drive from the upper drive bay, follow these steps: 1.
2. Identify pin 1 on the drive and align the connector so that the red wire is at pin 1, as shown below. red wire 3. 4. Locate the multi-colored power supply cable with the small connector. This cable is attached to the system board rather than the power supply.
Post-installation Procedures After you install or remove your drive(s) and replace the cover on your computer, you need to run the SETUP program to define the correct configuration for your newly-installed drive.
Chapter 5 Installing Video Drivers The Utility diskettes included with your system contain enhanced VGA (video graphics array) drivers and utilities for your computer’s built-in VGA adapter. This chapter describes how to install and use these drivers and utilities.
This chapter describes installation procedures for these common applications: Lotus 1-2-3 and Symphony, version 2.x (see page 5-3) Microsoft Windows, version 3.1 (see page 5-4) Microsoft Word, version 5.0 (see page 5-5) Quattro Pro, version 2.x (see page 5-6) WordPerfect, version 5.
Lotus 1-2-3 or Symphony If you have not yet installed Lotus 1-2-3 or Symphony, follow the instructions in your Lotus documentation to install it. Then follow these steps to install the drivers: 1. 2. 3. 4. 5. 6. 7. 8. Insert Utility Diskette 1 in drive A.
9. Selec t Text displa y to modify the text mode or Graphic s displa y to modify the graphics resolution. Then press Enter. 10. Select the TVGA driver you want to install from the displayed list and press Enter. 11. Select Return to menu and press Enter.
5. Insert the Utility Diskette 1 in drive A. 6. Type the following path and press Enter: A:WIN 7. Select the driver you want to install. 8. Follow the instructions on the screen to finish running SETUP. Microsoft Word If you have not yet installed Word 5.
9. Press F1 to list the display modes available. Press to see additional drivers. Choose the display mode you want to use. Note Mouse support is not available for 132-column modes.
Your Quattro Pro application now uses the display mode you selected. WordPerfect If you have not yet installed WordPerfect 5.1, follow the instructions in your WordPerfect documentation to install it. Then follow the instructions below to install the new drivers.
13. Select 0 to exit. Your selection is saved and used for displaying text as well as the print preview and graphics functions of WordPerfect. 5-8 Installing Video Drivers.
Chapter 6 Troubleshooting If you have any problems as you set up and use your computer, refer to this chapter. You can correct most problems by adjusting a cable connection, repeating a software procedure, or resetting the computer.
Use these guidelines to locate information about your system: Serial number: Video BIOS version: System BIOS version: System configuration: DOS version: Software versions: Look on the back panel of the computer to see the serial number. Restart your system.
The Computer Will Not Start The power light is on, but the computer does not start. Replace your main operating system diskette and turn on the computer again. Caution If you turn off the computer, always wait at least 20 seconds before turning it back on.
You installed of removed system components, and now your computer does not start. Check to make sure you have reconnected all the internal and external cables correctly. You may have installed option cards that exceed the system’s power requirements.
Keyboard Problems The screen displays a keyboard error message when you turn on of reset the computer. Make sure the keyboard is securely connected to the correct port. Nothing happens when you type on the keyboard. See “The Computer Does Not Respond,” above.
If you installed a display adapter card, make sure your monitor and display adapter match. Also check to see if the card’s switches or jumpers are set properly. If your display adapter card is not VGA, make sure you have your service representative disable the system’s built-in VGA adapter for you.
Diskette Problems You see a diskette error message. Reinsert the diskette, making sure you insert it all the way. If the drive has a latch, turn it down to secure the diskette. Also, check to see that you have inserted the right type of diskette in the drive.
Diskette Drive Problems A newly-installed diskette drive is not working properly. Make sure you have installed the drive correctly and check all the cable connections. You see a diskette drive error when you start your computer. Run the SETUP program and configure your system for the correct type of diskette drive.
You are unable to store data on th e har d disk drive. Make sure you have partitioned and formatted the drive correctly for your operating system. Use the procedures provided in your operating system manual. Also, make sure your hard disk drive has been physically formatted by the manufacturer.
Software Problems The application program does not start. Check that you are following the correct procedure for starting the program and that it is installed correctly. If you do not have a hard disk, make sure the correct diskette is in the diskette drive.
The printer prints garble d information. Check the printer manual for the printer’s correct DIP switch or control panel settings. Also, make sure you have the proper drivers installed for your printer and make sure you’ve selected the correct printer within your software application.
An external device connected to the option curd is not working correctly. Make sure you are using the proper cable to connect the device to the card. Memory Module Problems The memory count displayed by the power-on diagnostics program is incorrect. You may have installed the SIMMs incorrectly.
Controller Problems You see a controller error for the hard disk drive controller or the I/O port controllers when you start your system. The indicated controller on your system board may be faulty.
Appendix A Specifications CPU and Memory 32-bit CPU Intel 80486SX/25 microprocessor; upgradable to 486SX/33, 486DX/33, 486DX2/50, or 486DX2/66 System speed Fast and slow speeds available; fast speed i.
Clock/ calendar Controllers Video Diskette Hard disk lnterfaces Monitor Parallel Serial Game Keyboard Real-time clock, calendar, and CMOS RAM socketed on main system board with built-in battery backup.
Option slots Three 16-bit, full-length and two 8-bit, half-length I/O expansion slots, ISA compatible, 8 MHz bus speed Speaker Internal Muss storage Two 3 ½ inch wide, third-height drives (one internal mount) and one 5 ¼ inch wide, half-height drive Diskette drives Your system supports the following diskette drives: 3.
Physical Characteristics Width 15.6 inches (396 mm) Depth 14.5 inches (368 mm) Height 4.1 inches (104 mm) Weight 15 lb (6.8 kg), without drives or keyboard Power Supply Type input ranges Maximum outputs Frequency 65 Watt, fan-cooled 90 to 260 VAC +5 VDC at 7.
Environmental Requirements Tested Operating Environments Although your system will run most software applications, the following operating environments have been tested for compatibility with your system. As new environments become available, these also will be tested.
Available Options The following list represents only a few of the options supported for this product. Call your nearest marketing location or Epson Direct for more information on specific options.
Specifications A-7.
A-8 Specifications.
Index A AC power inlet, 1-4, 1-6, 6-3 Addresses, memory, 1-11, 1-20 Air circulation, 1-21 Altitude, A-5 Analog connector, 1-4 VGA input, 5-1 Application program copy protected, 2-5 display problems, 6.
CGA (color graphics adapter), 1-17 Chassis, 3-4 Checking system memory, 1-16 CHKDSK command, 6-7 Choosing a location, 1-1 Clock, real-time, 1-11, A-2 CMOS RAM, 1-9, A-2 Command prompt, 1-8, 1-10, 1-20.
Diskette label, 2-1-2 problems, 6-7 removing, 1-21, 2-1 type, 6-7 write-protected, 6-7 Diskette drive assignment jumpers, 1-12, 3-8, 4-18 bay, 1-7, 3-5 cable, 4-16-19, 6-8 caution, 4-17 configuration .
Formatting diskettes, 6-7 hard disk drive, 6-9 Four-pin jumper, 3-9 Frequency, power supply, A-4 Full-length option slots, A-3 Function keys, SETUP, 1-10 G Game port, Intro-1, A-2 Game port jumpers, 3.
J Jumpers cache, 3-8, 3-23 changing settings, 3-6, 3-9 CPU, 3-8 diskette drive assignment, 1-12, 3-8, 4-18 display adapter, 6-6 four-pin, 3-9 game port, 3-7 hard disk drive, 4-2, 4-17, 6-8 location, 3.
Modem, Intro-1, 1-6 Monitor assigning type, 1-17 brightness, 1-8,6-5 cables, 1-34 connecting, 1-4 contrast, 1-8,6-5 monochrome, 1-17,6-6 multifrequency, 1-4,5-1 power cord, 1-4,6-6 power switch, 6-6 p.
Port parallel, Intro-1, 1-5, 3-7, A-2 RS-232C, 1-6, A-2 serial, Intro-1, l-3-5,3-7, A-2 VGA, Intro-1, l-4, 1-16 Post-installation procedures, 3-30 Power button, l-8 inlet, AC, l-4, 1-6, 6-3 light, 6-3.
Serial port connecting, 1-3-5 controller, A-2 description, Intro-1 jumpers, 3-7 Settings, clearing, 2-3 SETUP assigning drive type, 4-2 booting sequence, 1-18 changing processor speed, 1-18, 2-6, A-1 .
Turning on computer, 1-7 TVGA, 5-4, 5-7 Two-pin jumper, 3-9 U Upgrading the processor, Intro-2 User-defined drive type, 1-14 Utility disk compaction, 6-9 diskettes, 5-1 VGA, Intro-2, 5-1-2 V VGA contr.
400235000.
An important point after buying a device Epson EL 486UC (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Epson EL 486UC yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Epson EL 486UC - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Epson EL 486UC you will learn all the available features of the product, as well as information on its operation. The information that you get Epson EL 486UC will certainly help you make a decision on the purchase.
If you already are a holder of Epson EL 486UC, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Epson EL 486UC.
However, one of the most important roles played by the user manual is to help in solving problems with Epson EL 486UC. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Epson EL 486UC along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
