Epson Computer Hardware User Manual

EPSON Endeavor L

ISA bus speed for all processors is

power

(SPEED)

light

hard disk

accesslight drive

diskette

power

button

8.3 MHz; local bus video speed reflects the

speed of the processor; at fast speed,

DX2/50 and DX2/66 processors run

internally at 50 and 66 MHz, but run

externally at 25 and 33 MHz; local bus

speeds for DX/2 processors are 25 and

33 MHz respectively

Memory

4MB RAM standard on system board;

expandable to 36MB using 1MB, 4MB, and

16MB SIMMs; SIMMs must be 72-pin,

32-bit or 36-bit, fast-page mode type with

an access speed of 70ns

bay for hard disk, diskette drive,

CD-ROM drive, tape drive, or other

128KB system and video BIOS and SETUP

code located in EPROM on main system

board

ROM

option card slots

512KB or 1MB DRAM standard on main

system board; 512KB expandable to 1MB

using a 256 x 16-bit, 40-pin SOJ DRAM

chip

Video RAM

Supports shadowing of system and video

BIOS ROM into RAM

Shadow RAM

Cache

8KB of internal cache on processor;

supports 32KB, 64KB, 128KB, or 256KB of

external cache using 28-pin, 8 x 8, 20ns

DIP chips or 28-pin, 32 x 8, 20ns DIP chips

and 28-pin, 32

8, 15ns tag chips

For SX-based systems, can install an

80487SX processor with math coprocessor

support; math coprocessor built into

DX-based and Pentium OverDrive

processors

coprocessor

Computer Specifications

Clock/calendar

Real-time clock, calendar, and CMOS

RAM socketed on main system board with

external 3.6V battery backup

CPU and Memory

32-bit CPU

Intel 486SX, DX, or DX2 processor

upgradable to faster, more powerful

processors, including SX2, DX4, or

Pentium OverDrive processors; DX4

processors require an adapter board to

regulate voltage

Video

Cirrus Logic CD5428 high speed super

VGA local bus on-board controller with

True Color support

Diskette

Hard disk

Controller on main system board supports

up to two diskette drives or one diskette

drive and one tape drive

Energy Star

Low power consumption, Energy Star

compliant in base configurations

(consumes less than 30 Watts)

Interface on main system board supports

up to two IDE hard disk drives with

built-in controller

System speed

Fast and slow processor speeds available;

fast speed is the speed of your processor

and slow speed is 8 MHz; 0 wait state

memory access at fast speed

Monitor

Local bus SVGA interface for fixed or

multi-frequency monitor built into system

board; 15-pin, D-shell connector

Press Ctrl, Alt, and - to select slow speed or

Ctrl, Alt, and + to select fast speed (use the

- or + on the numeric keypad); default

system speed selectable through SETUP

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System security Password (up to 8 characters) defined in

SETUP for system boot and keyboard

SVGA pass-through interface built into

SVGA feature

connector

main system board; 26-pin connector

unlock; definable hot key combination

locks the keyboard and mouse

One standard 8-bit parallel uni- or

Parallel

bi-directional interface built into main

system board; I/O address selectable

through SETUP; 25-pin, D-shell connector

Virus protection Write protection feature for boot sector of

the hard disk drive

Serial

Two RS-232C, programmable,

asynchronous interfaces built into main

system board; 9-pin, D-shell connectors

14. 8 i nc he s ( 370 mm)

16. 5 i nc he s ( 412 mm)

4. 8 i nc he s ( 120 mm)

Width

Keyboard

Mouse

PS/2 compatible keyboard interface built

into main system board; 6-pin, mini DIN

connector

Depth

Height

with one diskette drive and

weight

16.7 lb (7.5 kg),

PS/2 compatible mouse interface built into

main system board; 6-pin mini DIN

connector

one hard disk, but without keyboard

Option slots

Four 16-bit (or 8-bit) I/O expansion slots,

ISA compatible, 8.33 MHz bus speed; three

slots accommodate any size card, bottom

slot can hold a half size card

85 Watt, Autosensing, UL listed, fan-cooled

Type

Input ranges

100V to 125V

200V t o 240v

+5 VDC at 11 Amps, -5 VDC at 0.3 Amp,

+12 VDC at 2.0 Amps, -12 VDC at 0.3 Amp

Maximum

outputs

Speaker

Internal, piezo-electric speaker on main

board

50/ 60Hz

Frequency

Cables

Mass storage

Internal mounts:

One

wide, half-height

Two to main system board; four to mass

storage devices

Externally accessible mounts:

Two 5.25-inch wide, half-height

Diskette drives

3. 5- i nc h diskette drive, 720KB or 1.44MB

storage capacity

5.25-inch diskette drive, 360KB or 1.2MB

storage capacity

Combination diskette drive; 3.5-inch,

1.44MB and 5.25-inch, 1.2MB

-12 volts

0.3 Amp

+12 Volts

1.5 Amps

2 Amps

-5 volts

0.3 Amp

Maximum current

For each slot

+5 Volts

7 Amps

11 Amps

For all slots*

Hard disk

drives

form factor hard disk drive(s), up

to half-height size; the first mounted in the

vertical internal bay and the second

mounted in an externally accessible,

horizontal bay

Storage range

Condition

range

-4° to 140° F

(-20° to 60° C)

range

41° to 90° F

(5° to 32° C)

-4° to 140° F

(-20° to 60°C)

Temperature

1O% to 90%

Humidity (non

condensing)

20% to 90%

-330 to 39,600 ft

(-100 to 3,000 m) (-100 to 12,000 m) (-100 to 12,000 m)

Altitude

-330 to 9,900 ft

Half-height tape drive, CD-ROM drive,

optical drive, or other storage device;

Other devices

134° F (57° C)

N/A

104° F (40° C)

N/A

Maximum wet

bulb

68° F (20° C)

with mounting frames

Acoustical noise

37.5 dB

Detachable, two-position height; 101 or

102 sculpted keys; country-dependent

main typewriter keyboard; numeric/

cursor control keypad; four-key cursor

control keypad; 12 function keys

Stored in ROM; accessible by pressing the

De l e t e key at the SETUP prompt during

boot

Program

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Major Subassemblies

option card

SVGA

feature

connector

DIP

switches

processor

CN3

battery

Jumper and DIP Switch Settings

DIP switch settings

Jumper settings

Switch

number setting Function

Switch

Jumper Jumper

number

setting

Function

CPU Installed in PGA socket

3**

Enable the built-in VGA adapter

Disable the built-in VGA adapter

Enable DX-based or Pentium-based processor

socket

off

On*

off

On*

off

CPU not installed in PGA socket

Password enable

Password disable

Color monitor

in PGA

J4**

in PGA socket

Enable SX-based processor

Monochrome monitor

Factory setting

Factory set according to system CPU

Factory setting

** Factory set according to system type

External cache jumper settings

Clock speed DIP switch settings

Switch 1

off

Switch 2

CPU clock speed

25 MHz

off

33 MHz

Factory setting based on amount of external cache installed, if applicable

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Use only 32-bit, 72-pin, fast-page mode SIMMs that operate

at an access speed of 70ns. If 32-bit SIMMs are unavailable,

you can use 36-bit SIMMs instead.

System board components and connectors

Video Memory

This system comes with 512KB or 1MB of video memory. You

can increase the video memory to 1MB by installing a video

DRAM, 40-pin, 256KB x X-bit, SOJ chip.

Video resolutions and colors

Non-interlaced and interlaced

** Interlaced

External Cache

EPSON Authorized Servicers can install 32KB, 64KB, 128KB,

or 256KB of external cache on this system.

To install 32KB or 64KB of external cache, use SRAM,

28-pin, 8 x 8, 20ns DIP chips

SIMM Installation

To install 128KB or 256KB of external cache, use SRAM,

28-pin, 32 x 8, 20ns DIP chips

Your computer comes with 4MB of memory on the system

board. You can increase the memory up to 36MB by installing

1MB, 4MB, and 16MB SIMMs in the computer’s two SIMM

sockets. The following table shows the possible SIMM

configurations. You can install SIMMs in either SIMM socket.

For all configurations of external cache, use two 28-pin,

32 x 8, 15ns tag chips

If you install external cache, make sure you set jumpers J5,

J6, J7, J8, and J9 as described on page 3.

SIMM configuration

For the cache memory to work properly, you must install

chips in the following configuration (each bank contains four

cache memory sockets).

SIMM1

None

1MB

SIMM2

None

1MB

None

4MB

None

1MB

4MB

Total memory

4MB*

5MB

6MB

8MB

12MB

20MB

21MB

24MB

36MB

On-board

4MB

1MB

Cache memory configurations

4MB

16MB

4MB

16MB

Standard memory on the system board

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Microprocessor Upgrades

The computer’s processor can be upgraded by replacing the

existing microprocessor with a faster one. You can either

purchase an upgrade kit from EPSON or buy the individual

components separately, as listed in the following table.

Microprocessor upgrade components

Actual formatted size may be slightly different than size on drive label

SX2, DX/33, DX/50, DX2/50, DX2/66, DX4, and Pentium

OverDrive processor upgrades require a heat sink.

Drive Option Information

You may also need to change the settings of jumper J4 or DIP

switches 1 and 2. See page 3.

Hard disk drive options for 1-inch IDE drives

Hard Disk Drive Types

The table below lists types of hard disk drives supported by

the computer. Check this table and the hard disk drive

manual to find the correct type number(s) for the hard disk

drive(s) installed in the computer. Enter the type number(s)

when you set the hard disk drive configuration in the SETUP

program.

Hard disk drive types

Select 1 or none for the precomp value. lf neither of these options are

available, select the maximum available precomp value.

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IDE hard disk drive

Hardware Interrupts

CS (cable selection) can he jumpered for any configuration. When CS is used,

the drive Is a master If pin 28 is grounded, or a slave if pin 28 Is not

grounded.

System Memory Map

Diskette and magneto optical drive options

DMA Assignments

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System l/O Address Map

Connector Pin Assignments

Parallel port connector pin assignments (CN8)

Serial port connector pin assignments (CN9, CN10)

Signal

Pin Signal

Data canter detect

Receive data

Transmit data

Data terminal ready

Ground

Data set ready

Request to send

Clear to send

Ring Indicator

Keyboard connector pin assignments (CN5)

Signal

Data

Reset

Pin Signal

Vcc

clock

Ground

Mouse connector pin assignments (CN4)

Signal

Data

Signal

VCC

Ground

clock

‘NC

VGA port connector pin assignments (CN13)

Pin Signal Pin Signal

Pin Signal

Red

Green

Blue

Ground

Reserved

Horizontal sync

Vertical sync

Ground

VGA feature connector (CN14)

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assignments (CN2)

Power supply connector pin assignments (CN1)

Option card riser board connector pin 1;

Diskette drive connector pin assignments (CN11)

**All odd-numbered pins are grounds

Hard disk drive connector pin assignments (CN12)

*Active low logic

Option slot connector pin assignments

‘Active low logic

Speaker connector pin assignments (SP1)

Signal

Speaker

(+)

Battery connector pin assignments (CN3)

Signal

RED wire (3.6v)

BLACK (Ground)

*Active low logic

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Booting Sequence

If you cannot boot the computer from the hard disk, make

sure the booting sequence in SETUP is set to A: then C:.

Then boot the computer from a system diskette in drive A.

Password

Make sure that you do not forget the password you set up. If

you do:

Disable the password by setting DIP switch 4 on the main

system board to OFF.

Then turn the computer on and off again.

Set DIP switch 4 to ON to enable the password function.

Run SETUP to enter a new password, if desired.

Active low logic

You can also enter a hot key designation in SETUP to secure

the system from unauthorized users. Once a password and

hot key have been set, when the hot key is pressed, the

keyboard and mouse lock until the the user enters the

password.

Installation/Support Tips

Installing Diskette Drives

Make sure that the drive type has been correctly selected in

the SETUP program.

Information Reference List

Engineering Change Notices

None.

Installing Hard Disk Drives

When installing a hard disk drive, see the hard disk drive

type tables on page 6 to select the correct type number for

the drive. If the parameters for your drive are not listed,

you can define your own drive type by selecting drive

type 47 and entering the drive’s exact parameters for this

user-defined drive type.

Technical Information Bulletins

None.

Product Support Bulletins

None.

It is recommended that a 16-bit, AT-type hard disk

controller be used if you are installing a drive that cannot

use the embedded IDE interface. If you install a non-IDE

hard disk drive and controller card, you need to use the

SETUP program to disable the built-in IDE hard disk drive

interface.