Panasonic JB-3300 Guida rapida

Technical

Guide

Portable

Computer

JB-3300

Panasonic

Matsushita

Electric

Trading

Co.,

Ltd

PREFACE

This

Technical

Guide

contains

detailed

explanation

the

operation

the

CPU

module,

the

floppy

disk

controller,

display/keyboard,

disk

drives,

and

power

supplies

for

the

computer.

General

checkout

procedures

aid

you

tracing

problems

specific

subassembly

board

but

further

are

included.

Information

on the

hard

disk

controller

board, floppy

disk

drive,

and

hard

disk

drive

also

provided.

addition,

you

will

find

data

sheets

for

several

the

integrated-circuit

chips

used

this

computer.

This

guide

limits

repair

procedures

replacement

subassemblies

only.

parts

list

containing

part

numbers

for

major

subassemblies

may

found

Section

item

Additionally,

detailed

parts

list

for

each

subassembly

may

found

the

end

each

section.

Using

the

part

numbers,

you

can

order

the

major

subassemblies

and

some

components

through

your

Panasonic

Service

Office.

aid

you

recognizing

problem

areas,

recommend

that

you

obtain

diagnostics

disk

and

RS-232C

loop-back

plug

from

the

Panasonic

Service

Office.

you

have

any

problems

with

the

computer,

contact

the

service

office.

IMPORTANT

NOTICE

This

Technical

Guide

written

for

engineers

who

have

thorough

understanding

electronics

and

computer

circuitry

and who

are

authorized

repair

the

computer.

not

intended

for

the

beginner.

unauthorized

person

should

use

this

guide

repair,

modify,

alter

the

computer,

Panasonic

cannot

held

responsible

liable

for

any

damage

caused

alleged

caused.

strongly

suggest

that

for

proper

servicing,

the

computer

returned

Panasonic.

Documentation

Map

For

Specialists

For

Users

JB-3300

Portable

Computer

User's

Manual

Service

Manual

(For

Field

Service

Unit

{

Technical

Guide

Replacement)

(For

Repair

Unit

Repair)

JB-3300

Hard

Disk

Drive,

Floppy

Reference

Guide

Disk

Drive,

LSI

Module

for

Users

MS-DOS

Manual

————

—

———}+

—

————

-—

—-

Basic

Reference

| |

Manual

(Optional)

CONTENTS

GENERAL

SPECIFICATIONS

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1V-

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