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Epson U11, U12 Follow these steps to install the CPU card in your computer:

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Follow these steps to install the CPU card in your computer:

1.Position the card as shown below, aligning the two connectors on the bottom of the card with the two slots in the socket on the main system board. The hole in the bottom of the bracket should fit over the vertical post on the bottom of the computer case.

2.Guide the card straight into the socket until it is firmly seated. If it does not go in smoothly, pull it out and try again.

3.Secure the bracket at the end of the card to the front of the computer case with the retaining screw.

4.After you replace the computer’s cover, run the SETUP program so your computer can update its configuration. See Chapter 2 of the Setup Guide for instructions. (You need only run the program and save the configuration; you do not need to change any settings.)

Installing and Removing Options 3-21

Contents

Socket U11 Socket U12 Total memory Page Page Page Important Safety Instructions 1.Read all of these instructions and save them for later reference 2.Follow all warnings and instructions marked on the computer 4.Do not spill liquid of any kind on the computer 5.Do not place the computer on an unstable cart, stand, or table Do not insert objects of any kind into this product through the cabinet slots A.When the power cord or plug is damaged B.If liquid has entered the computer D.If the computer has been dropped or the cabinet has been damaged E.If the computer exhibits a distinct change in performance Instructions Importantes de Sécurité Bien suivre tous les avertissements et les instructions indiquks sur 4.Ne jamais renverser un liquide d’aucune sorte sur l’ordinateur 5.Ne pas placer l’ordinateur sur un chariot, un support, ou une table instable 10.S’assurer que le cordon d’alimentation de l’ordinateur n’est pas effrs A.Lorsque le cordon d’alimentation ou la prise sont endommagk B.Lorsqu’un liquide s’est infib& dans l’ordinateur D.Lorsqu’on a &hap@ l’ordinateur ou que l’on a endommage le boitier E.Lorsque l’ordinateur demontre un changement note au niveau de sa performance Page Page Page Page Page Introduction Optional Equipment Memory OverDrive Module Math Coprocessor Video Daughterboard VGA Utilities Chapter 4 explains how to install and remove disk drives Chapter 5 provides instructions for running system diagnostics Chapter 6 gives the procedure for formatting a hard disk Chapter 7 contains troubleshooting tips Appendix A lists the specifications of your computer Where to Get Help Assistance in locating your nearest Authorized Epson Reseller or Service Center aCustomer Relations aUser group information 6introduction Using Your Computer Turning On the Computer Never turn on the computer with a protective card in a Follow these steps to turn on your system: access light Turning Off the Computer Whenever you turn off your system, follow these steps: 1.Save your data and exit any program you are using 3.Remove any diskette(s) from the diskette drive(s) Using Disks and Disk Drives Cl Use different types of diskettes and diskette drives QCare for your diskettes and diskette drives 0 Write-protectdiskettes 0 Insert and remove diskettes 0 Use a single diskette drive system How Disks Store Data Types of Diskette Drives You Drive and diskette incompatibilities Because of the type and size differences, you cannot use a Page Caring for Diskettes and Diskette Drives Follow these basic precautions to protect your diskettes and avoid losing data: P Remove all diskettes before you turn off the computer Q Never wipe, brush, or try to clean diskettes in any way Write-protectingDiskettes To remove the write protection, peel off the write-protecttab or switch so they are Inserting and Removing Diskettes remove all diskettes before you turn off the computer Using a Single Diskette Drive System Formatting Diskettes Making Backup Copies Using a Hard Disk Drive PYour computer can perform all disk-relatedoperations faster Backing up the hard disk caring for your hard disk Special Keys or Program Resetting the Computer want Caution There are two ways to reset the computer: If you are using locking the Computer’s Cover Your Using a Password 1.If you do not have a hard disk, insert your system diskette in drive A 2.Turn on or reset the computer. You see a number and the key prompt: If you do not know the correct password, see “Password Problems” in Chapter Changing a Password To change your password, follow these steps: 123/ABC The screen does not display what you type Deleting a Password To delete your password, follow these steps: 123 Using Your Computer as a Network Server Using a Password in Network Server Mode Follow these steps to enter your password: Type your password and press [burl. The screen does not display what you type Changing If you are using a There are three ways to change the processor speed: 0Run the SETUP program P Enter a keyboard command Cl Run the ESPEED program Entering Keyboard Commands [cbll[m [mJIm1[-1 The speed setting remains in effect until you do the following: LI Press [cbl) (Alt) 66)or the RESET button Using the ESPEED Program To run SPEED, e the following at the MS-DOScommand prompt and You see the following messages: [* [ut) [A] Entering the ESPEED command in a butch file Changing the Speaker Volume Follow these steps to run SETVOL: 2.At the command prompt, type the following and press [En*rl: SEWOL [tl l-T-1 Preparing the Hard Disk for Moving 1-36Using Your Computer Using AUTOEXEC.BAT and Other Batch Files Page Accessing Internal Components Special Precautions Removing the Cover Remove the computer’s cover to do any of the following: 0 Change jumper settings 0 Install or remove option cards 0Install or remove single inline memory modules (SIMMs) Page Removing the Front Panel Page Removing the Subassembly Page Replacing the Subassembly Follow these steps to replace the subassembly: Page Replacing the Front Panel Follow these steps to replace the computer’s front panel: 1.Turn the computer so you are facing the front Rep/acing the Cover Follow these steps to replace the computer’s cover: 1.Turn the computer so you are facing the back panel Lock the cover onto the computer, if desired. (See Chapter 1 for instructions.) Installing and Removing Options Page Main System Board Map Jumper Settings 0Set your monitor type to monochrome or color Setting the Jumpers Refer to the table above to identify A jumper’s Option Cards see “Removing an Option Card” on page 3-10for instructions CI You cannot install an 8-bitcard that has an additional tab along the bottom Installing an Option Card Follow these steps to install an option card 4.Holding the card by the top comers, position it over the slot as shown below Examine the card to verify that it is fully seated in the slot Installing and Removing Options Removing an Option Card If you need to remove an option card, follow these steps: Memory Modules (SIMMs) Page Page Installing SIMMs Page Removing SIMMs 2.If you are removing a second SIMM, repeat the procedure described above Replacing the CPU Card cl 486SX/25 0486DX/33 Q 486DX2/66 Removing the CPU Card Follow these steps to remove the CPU card from your computer: If you are installing a new CPU card, follow the instructions on the next page Options Insfalling the CPU Card Checking the jumper settings For general information on setting jumpers, see “Jumper Settings” on page Follow these steps to install the CPU card in your computer: Installing on OverDrive Module Page 6.Reinstall the CPU card as described on page Installing a Math Coprocessor The following table lists which math coprocessors are available Installing the Intel 487SX/25 Microprocessor 5.Reinstall the CPU card as described on page installing a Weitek 4167 Coprocessor Page Replacing the video Daughterboard Page Page Page Page Using the VGA Feature Connector Installing and Removing Drives Choosing the Correct Drive Bay Installation/Removal Sequence Checking the IDE Hard Disk Drive Jumpers Check the jumper settings if you are doing any of the following: D Installing your first hard disk drive 0Removing one hard disk drive and leaving another in your computer 0 Installing a second hard disk drive Where to Go Next Installing a Drive in the External Bay Removing Drives Follow these steps to install a disk drive in the external bay: 0 Small wrench 5.Loosely secure the drive to the drive bay temporarily with the two nuts Connecting the Cables Follow these steps to connect the cables: labeled FDD 1 labeled FDD TAPE DRIVE ONLY Make sure the holes fit over all the pins and then push in the Connector could severely damage your drive when you push in the Caution 6.If you installed a hard disk drive, skip to step Removing a Drive From the External Bay Follow these steps to remove a drive from the external bay: 3. Grasp the front of the drive and pull it out of the bay 4.If you removed a hard disk drive, go to step slot cover Page Page 2.Remove the two screws securing the mounting frames to each side of the drive Page P5 Page Page Page Replace the computer’s cover as described in Chapter 2; then see Hard Page Replace the computer’s cover as described in Chapter 2; then see Post-installationProcedures Page Running System Diagnostics Starting the Program Follow these steps to start the System diagnostics program: diagnostics program: 1.Insert the Reference diskette in drive A and turn on or reset the computer 2.At the A : prompt, type DIAG and press (br9rl Deleting Tests To remove devices from the Items Detected list so the System diagnostics program cannot test them, follow these steps: Press You Adding Tests If you want to add devices to the Items Detected list, follow these steps: 1.Press [t) or [to]toectAdd Tests. You see the Add menu, such as the following: Drive B LPT1 Printer Test Running Tests Follow these steps to run a test from the Execute menu: System Memory How often to repeat test HARD DISK DRIVE(S) AND CONTROLLER Resuming From an Error System Diagnostic Tests Error Messages Page Formatting a Hard Disk Follow these steps to start the hard disk formatting program: - Destructive 0 - E x i t checksthe disk for unflagged bad tracks without destroying data. You Formatting a New Disk Reformatting a Used Disk To reformat a disk you have been using follow these steps: 4.Run the Format option to format the disk selecting an Option Use the arrow keys ([t) [-i-l,[tl [T] 1.Select Y to scan the disk or N to skip the scanning process Scanning for flagged bad tracks Head : mm Cylinder : nnnnn Scanning finished Count of tracks flagged bad 3. Next you see this prompt: Accept recommended skewed sectors per head in format : 0 ? (Y/N) recommended (Y/N) To enter a new value, select N. You see the following prompt: Modifying the Defective Tack Table To add a bad track, follow these steps: 1. Press [Al. You see this prompt: Type the number of the containing the bad track and press Formatting the Disk When you are ready to start formatting the disk, you see the following warning: want to start select Y to Cancel formatting or N to continue If you continue with formatting, you see: Option 2, Destructive Surface Analysis from the Hard Disk Format Menu. You see these messages: Analyze Hard Disk <Drive II: Read/Save/Write/Read/Restore/Read check for all tracks As the program checks each track, it decreases the cylinder numbers to zero Analysis finished Count tracks flagged bad Count of tracks with write, read Option 3, Non-destructiveSurface Analysis Non-destructive surface analysis Analyze Hard Disk <Drive n: Read/Verify check for all tracks Exiting the Program Troubleshooting When the computer performs its RESET Error Messages If the error is not serious, you see this prompt: Resume = <F1> key Write down the error message and press [ to continue Page Page The Computer Won’t Start Troubleshooting The Computer Does Not Respond 3.Did you enter the correct password? See “Password Problems,” below If your computer still does not respond, you can reset it using the rJI) I=] RESET latch-off Restoring the Power Supply To restore normal power supply operation, follow these steps: If the power supply shuts off again, contact your dealer Password Problems If you have any trouble using your password, try the following: Accessing Your System 1.Turn off the computer 3.Turn on the computer 4.When you see Press <F2> to run SETUP, press [F2J To disable password checking, highlight Keyboard Problems For monitor problems, check the following: 7-12Troubleshooting Diskette Problems 6.Did you receive one of the following MS-DOSerror messages Disk Drive Error: Abort, Ignore, Retry Disk error reading drive d: Disk error writing drive d: If you see no Diskette Drive Problems Hard Disk Problems Q Installing the drive Li Preparing the drive for use P Accessing data on the drive If your hard disk has data on it, always be sure to back up Installing the Drive If you have problems with a newly-installeddrive, check the following: 1.If your dealer installed the drive, consult that person about the problem Preparing the Drive Partition and format the drive for your operating system. If you are using If you cannot identify the problem, contact your dealer Accessing Data on the Drive Software Problems If you have trouble with an application program, try the following: If you entered an a Hold down [ and press [c) press [c) Printer Problems Page Option Card Problems Is the option card installed correctly? Make sure it is Memory Module Problems If the memory count displayed by the Math Coprocessor Problems Run the SETUP program to make sure the math coprocessor is listed as Specifications Memory ROM video RAM Shadow RAM Module Controllers Hard disk Interfaces Option slots Keyboard Page Environmental Requirements Physical Characteristics Width 17 inches (432 mm) Depth 16 inches (406 mm) Power Source Requirements Page Extended VGA modes Page Glossary Access speed ASCII Asynchronous AUTOEXEC.BAT file Automatic speed Backup BIOS CGA Character Chip CMOS Code Command Command prompt Configuration Control code Conventional memory Coprocessor CPU Cursor Cylinders Data Default Device Device driver Diagnostics See Disk Disk drive Display adapter card DOS Double-density Drive designator The letter name of a disk drive, followed by a colon-forexample, C : EGA Expanded memory Extended memory File Filename Filename Fixed disk Format Hexadecimal High-density Jumper Key disk Kilobyte (KB) LIM EMS Main system board MCGA MDA Megabyte (MB) Megahertz (MHz) Memory Monitor Multifrequency monitor server Operating speed Operating system Option card OS/2 Parameter Parity Partition Password Pathname Port Prompt RAM Read Read/write head Real-timeclock Refresh rate Reset Roof directory RS-232C Sector Self test see Power-ondiagnostics Software Subdirectory Switch System diagnostics System diskette VGA Write-protect Index Page Page Jumpers Map Page Page Page Page Epson Overseas Marketing Locations