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Epson Q50188015-1 Clock and CMOS RAM Check, RAM Check, Keyboard Controller and Keyboard Check, Video and Video Controller Check, C-2, Power-OnDiagnostics

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Clock and CMOS RAM Check

When the system device check is completed successfully, the computer checks the timer and CMOS RAM. If the system clock has not been set, this message is displayed:

161-Set date and time

RAM Check

The computer now begins to check the RAM installed in the main system board. During the check, this message is displayed:

xxxKB OK

where XXX indicates the amount of memory in which no malfunction is found. This value increases continuously by 64KB up to the amount of RAM installed on the main board, which is 640KB. If the computer detects an error in the first 64KB area, an error message is displayed and the computer halts with no further information.

If there are faulty RAM chips in your system, you see the following message:

20x-Memory error

Keyboard Controller and Keyboard Check

The computer checks the keyboard controller and keyboard for problems such as failure of one of the keys to release. If there are any errors in the connection between the keyboard and computer, you see this error message:

301-Keyboard error

Video and Video Controller Check

The computer next checks the video and video controller. If an error occurs, you see one of these messages:

401-CRT error

501-CRT error

C-2

Power-On Diagnostics

Contents

Page User’s Guide IMPORTANT NOTICE DISCLAIMER OF WARRANTY COPYRIGHT NOTICE TRADEMARKS Copyright 0 1988 by Epson America, Inc FCC COMPLIANCE STATEMENT FOR AMERICAN USERS Note: WARNING Page Contents 4 Using MS-DOSwith Your Equity Ie Contents Appendixes D Performing System Diagnostics F Formatting a User-installedHard Disk Contents Introduction How to Use This Manual Where to Get Help Setting Up Your System 1 Unpacking 2 Choosing a Location 3 Connecting the Keyboard 4 Connecting a Monitor 5 Connecting a Printer Connecting to the parallel interface Connecting to the serial interface 6 Connecting the Power Cord Page 7Inserting the Startup Diskette 8 Starting the System POWER Initial screen display Enter Enter 9 Copying System Diskettes Copying with one diskette drive Setting Up Your System Page Preparing a Hard Disk for Use Creating the MS-DOSPartition Formatting the MS-DOSPartition WARNING, ALL DATA ON NON-REMOVABLEDISK DRIVE C: WILL BE LOST Copying the Reference and Operating 2 Files Booting From the Hard Disk Using the Equity Ie Special Keys on the Equity Ie Keyboard The following table describes special keys on the Equity Ie keyboard lab ‘2 Caps Lock Alt Backspace Selecting Execution Speed Using Diskettes Caring for diskettes Inserting and removing diskettes Making backup copies Write-protectingdiskettes Using Using a Hard Disk Drive Caring for the hard disk Protecting the data on your hard disk Resetting the Computer Turning Off the Computer Moving the Computer Page Using MSDOS with Your Equity Ie Starting and Exiting MS-DOS Changing the Default Drive The MS-DOSCommand Format parameters Entering MS-DOSCommands Storing Data Using Directories Page Listing the contents of a directory Using pathnames Creating directories Changing directories Copying from one directory to another Using MS-DOSwith Your Equity Ie Formatting Diskettes Formatting diskettes with a hard disk and one diskette drive Formatting diskettes with two diskette drives Using MS-DOS with Your Equity Ie with Enter. You Formatting diskettes with one diskette drive (no hard disk) Formatting Enter. You see Copying Data Using DISKCOPY with one diskette drive: Using the COPY command Page Using the BACKUP command Using the Epson HELP Utility PgUp ESC Using the Epson MENU Utility Running MENU from a diskette MENU utility options Using the XTREE Utility Running XTREE XTREE Ctrl-D Using an AUTOEXEC.BAT File Creating an AUTOEXEC.BAT file If you have a hard disk: If you do not have a hard disk: Page Installing Option Cards Removing the Cover A-2 Installing Option Cards Installing an Option Card A-4 Zmtulling Option Cards Removing an Option Card Replacing the Cover Troubleshooting The Computer Won’t Start The Computer Locks Up Video Problems Diskette Problems Hard Disk Problems Software Problems Printer Problems Option Card Problems Power-OnDiagnostics System Device Check Clock and CMOS RAM Check RAM Check Keyboard Controller and Keyboard Check Video and Video Controller Check Parallel Port Check Serial Port Check Diskette Drive Seek Check Hard Disk Controller and Hard Disk Check Performing System Diagnostics Starting System Diagnostics l - System board Memory Enter. If Modifying the DEVICE LIST D-2 Performing System Diagnostics Selecting a Test Resuming From an Error System Board Check Memory Check Keyboard Check Video Check Attribute check Character set check D-8 400column character set check 320x200 graphics mode check Performing D-9 640x200 graphics mode check D-10 640x480 graphics mode check Enter Enter Monochrome/Color video check To check your monochrome or color video, press 8 and then Enter Floppy Disk Drives and Controller Check FLOPPY DISK DRIVE(S) AND CONTROLLER CHECK MENU Sequential seek check D-13 Random seek check Write, read check D-14 Math Coprocessor (8087) Check Parallel Port (Printer Interface) Check Serial Port (RS-232CPort) Check Alternate Serial Port Check Dot-MatrixPrinter Check Hard Disk Drives and Controller Check Read, verify check D-20 Alternate Parallel Port Check Parallel Port (on Video Adapter) Check Exiting System Diagnostics Error Codes and Messages Video-adapter % d’sp’ay Floppy disk drives and controller Math coprocessor Specifications Main Unit Interfaces Keyboard Mass Storage Power Requirements Environmental Requirements Characteristics Video Display Formatting a User-installedHard Disk Starting the Hard Disk Format Formatting and Checking Options Conditional Format (Normal) =246g DOUBLE CHECK THAT YOU HAVE BACKUP DISKETTE COPIES OF ALL YOUR FILES F-4 Formatting a User-InstalledHard Disk Unconditional Format Formatting a User~instulled Hard Disk F-7 Destructive Surface Analysis =2459 Formutting a User-installed Hard Disk Hard F-9 Non-destructiveSurface Analysis Glossary Boot Character CMOS Code Command Current directory Cursor Cylinders Data Data diskette Operating See Diskette High-density Input/output (I/O) port Interface Joystick Keyboard Megahertz (MHz) Memory Microprocessor Modem Monitor Interface Program Prompt RAM Read Read/write head interface Parallel VGA Wildcard Write Write-protect GL-11 Index Ctrl Ctrl-AH-Del Ctrl-C Ctrl-Alt-Del Ctrl-C IN-3 IN-4 Index IN-5 Index IN-7 RESET IN SPEED IN-10 Reader Comment Card Equity Ie User’s Guide EPSON