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Epson 4SX/25 Laptop User Manual

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

Main System Board Diagram

VGA video

parallel

serial 2

serial 1

mouse

keyboard

ELI-d

CN2

CN3

QQQ

1

-

power supply

connectors

VGA feature

connector

ml

UlQ

U18

standard

-

512KB

video

memory

<

optional

-

512KB

CPU chip

u21

OverDrive socket

(ZIF

socket)

option board

riser card

connector

CN

0000000000000000

0000000000000000

U,..a

1

Iii

0000000000000000000

0000000000000000000

nn

-

FDD connector

-

HDD connector

-

7

1

1

1

,I

e

I”

----e--

u37

0

I

C

II

I

E

I

I

I

I

Ia

I

I

I

I

CPU

(PQFP)

U27

10

U38

TOSHIBA

TC6933ES

--1

I

I

I

I

I

I

I

I

0

I

I

2

0

A

1

Ill

u35

u33

3

CN17CNIS

CN15

CN14 CN13 CN12

CNll

OrlnnlInn

\

mu

U3Q

I

\

SIMM 1

SIMM0, 4MB SIMM standard

4/1/93

EPSON Equity-3

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