Epson 4DX/33 User Manual

Epson

EPSON Equity 4SX/25,4DX/33, and 4DX2/50

Main System Board Diagram

VGA video

parallel

serial 2

serial 1

mouse

keyboard

CN2

power supply

connectors

VGA feature

connector

s t a n d a r d

512KB

video

memory

<

o p t i o n a l

512KB

CPU chip

u21

socket

socket)

option board

riser card

connector

0000000000000000

0000000000000000

1

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

FDD connector

HDD connector

1

1

1

I

”

u37

I

C

I
I
I
I
I
I
I
I

I

CPU

(PQFP)

U27

U38

TOSHIBA

- - 1

I

I

I

I

I

I

I
I
I
I

u 3 5

3

CN14 CN13 CN12

I

\

SIMM 1

SIMM0, 4MB SIMM standard

4/1/93

EPSON Equity-3