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Epson Printer Cache, Clock, Video, Hard disk, shadow RAM, coprocessor, Controllers, 1MB of video RAM, and one tape drive, hard disk auto-sensingfunction

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Video RAM	512KB DRAM on main system board;
	expandable to 1MB using four 4 x 256
	DIP-type DRAM chips
shadow RAM	Supports shadowing of system and video
	BIOS ROM into RAM
Memory	Supports relocation of 128KB of memory
relocation	from A0000h to BFFFFh
Cache	1KB of internal cache on processor
Math	Cyrix 83S87-25
coprocessor
Clock/	Real-time clock, calendar, and 114 bytes of
calendar	CMOS RAM socketed on main system
	board with built-in rechargeable NiCad
	battery backup
Controllers
Video	Cirrus Logic® GD5426 high speed super
	VGA local bus controller; provides
	TrueColor support and resolutions up to
	1280 x 1024 in 16 colors (interlaced) with
	1MB of video RAM
Diskette	Controller on main system board supports
	two diskette drives or one diskette drive
	and one tape drive
Hard disk	IDE interface on main system board
	supports up to two IDE hard disk drives
	with built-in controller; BIOS provides
	hard disk auto-sensing function

A-2 Specifications

Contents

Page Page Important Safety Instructions ●Use only the type of power source indicated on the computer’s label ●Do not let the computer’s power cord become damaged or frayed Except as specifically explained in this User’s Guide Importances instructions de sécuritè Page Contents Page Page Page Introduction VGA Drivers Energy Savings Note Optional Equipment Memory Video Memory Drives Math Coprocessor How to Use This Manual Appendix A lists the specifications of your computer Were to Get Help Call the EPSON Connection for the following: Customer Relations EPSON technical information library fax service CompuServe On-line Support Magazine Setting Up Your System Setting the Voltage Selector Switch Connecting System Components Connecting a Keyboard and Mouse Connecting a Monitor Connecting a Printer or Other Device Using the parallel port Using the Follow these steps to connect a parallel printer to your computer: Plug the connector end of the printer cable into the computer’s Connecting the Power Cord Page Turning Off the Computer Stating the SETUP Program Page Setting the Date and Time Drive(s) Setting the Hard Disk Drive(s) Using the auto-sensingfeature Move the feature Setting the If you installed an optional video card, follow the guidelines below to select the correct adapter type Video display type options Setting Keyboard Options Setting the Processor Speed Cyrix Cache Option Setting Page Page Exiting SETUP To leave SETUP, press Esc from any SETUP screen. From the Esc Esc F4 Saves A:\READMEP Computer Insetting and Removing Diskettes Stopping a Command or Program Resetting the Computer Changing the Processor Speed Page Installing and Removing Options Removing the Cover Page Replacing the Cover Locating the Internal Components Changing the Jumper Settings Built-inVGA jumper settings Setting the Jumpers If you need to change any jumper settings, follow these steps: 1+ Refer to the illustration on page 3-5to locate the jumpers Page Installing Memory Modules SIMM configurations Inserting SIMMs Removing SIMMs Page Installing an Option Card Full-length Slot Installing a Card in a Half-lengthSlot Removing an Option Card Adding Video Memory Page lnstalling the Math Coprocessor Post-installationProcedures Installing and Removing Drives Removing the Diskette Drive and Mounting Bracket Installing a Hard Disk Drive Using the Mounting Page Removing the Mounting Frames Installing the Hard Disk Drive Below the Diskette Drive Page Replacing the bracket and drives in the computer Connecting Page Page Page Caution a Hard Installing a Drive in an External Drive Bay Page Installing the Drive Page Connecting the Drive and Power Cables Page If you do not align the cable connectors correctly, you could severely damage your drive when you push them in Removing a Drive from an External Bay To remove a drive from an external drive bay, follow these steps: Page Troubleshooting Use these guidelines to locate information about your system Serial number: Look on the label on the bottom of the computer to find the serial number The Computer Will Not Start Place a bootable diskette in drive A and turn on the computer again The computer does not start and the power light is not lit The installed The Computer Does Not Respond Try turning the computer off, wait 20 seconds, and turn it on again Keyboard Problems See “The Computer Does Not Respond,” above Mouse Problems auxiliary device error message Monitor Problems Turn off the monitor’s power, wait five seconds, and turn it back on Diskette Problems The diskette is the right type, but you still see an error your operating system documentation for instructions on formatting diskettes Diskette Drive Problems Hard Disk Drive Problems Page Software Problems Printer or Scanner Problems Option Card Problems Memory Module Problems Controller Problems Internal Battery Problems and Specifications shadow RAM Cache coprocessor Clock Controllers connector Mouse SETUP Program Physical Characteristics Page Options Available from EPSON Hard Disk Drive Types Hard disk drive types (continued) Specications A-9 Drive Option Information A-10Specifications IDE hard disk drive jumper settings DMA Assignments Specifications A-11 Hardware Interrupts System Memory Map System I/O Address Map Page Connector Pin Assignments Glossary Page Page Page Epson America (USA) Epson America (International) EPSON Worldwide Subsidiaries Distributors Caribbean Index timing requirements, 2-5 Auto-sensingfeature, 1-13, A-2, A-8 AUTOEXEC.BAT file Back panel Banks, SIMM socket Battery, 1-10, 3-6, 5-14, A-2 Index Page Diskette drive (continued) faulty, 5-7 installing, 4-1–22jumper power cable, 4-19–21, 5-8 problems, 5-8 removing types, A-4 Display adapter Drive bays, location Drive bracket, 3-5, 4-2-4, 4-6–8, 4-14 Drivers Page Page Operating system (continued) prompt, 1-19 reloading version number, 5-2 Optical drive, Intro-4, 4-1, 4-15 Option cards connector board, 3-5 DIP switches, 5-12 guides installing, Intro-3, 3-13–16jumpers, 3-13, 5-12 problems, 5-12 removing, 3-7 Parallel port RAM, Intro-1–2, 1-16, A-2 Read/write Safety instructions, iii-iv, 1-7, 3-1 Scanner, 1-17 Screen resolutions, see Video resolutions Serial number, 5-1–2Serial ports COM1 and COM2, 1-4, 1-6 connector Software, see Application programs Speaker, A-3 Static electricity Stopping a command or program Storage devices, Intro-1, Intro-4, 4-1, A-4 System