Panasonic JB-3300 Quick start guide

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

2...

ccc

cece

crc

ence

cece

svc

csccccee

wcrc

cece

eee

neces

I-1l

1.1

LOGIC

UNit

cece

ccc

cer

wre

ccc

cece

ee ee

cece

cee

eee

cceces

I-1

1.2

Plasma

Display

ccc

cee

ccc

ccc ccc ccc ccc ccc

essence

cscs

cece

ccccens

I-2

1.3

Floppy

Disk

DYivVe

2...

ccc

cece

ccc

meee

eee

nces

I-2

1.4

Hard

Disk

Drive

(Hard

Disk

VerSion)

2...

ccc

we cc

cece

I-3

1.5

Keyboard

cece

ccc

ccc ccc ccc

cece cece cece cree

cece

reece

ceseces

I-3

1.6

POWEY

SUPPLY

cece

ccc

cere

ccc

nsec

racssccesccasescececcssesees

I-4

1.7

FAN

weccccscs

ccccccrccccercce

ser

nes

encccererencesseseessseces

I-4

1.8

SOFCWALE

cece

ccc

cece

cere

nar

cece

asec

nce

eee eee ese

seeseses

I-4

1.8.1

System

SOftTWALE

Lecce

ccc

cece

rere

cece

werner

ccc

ens

necceces

I-4

1.8.2

Program

LangquageS

...ccwccccccccccccesccccvesssesvssecces

I-5

1.9

DIMENSIONS

Lecce

ecccccccccccasceccceccesssssesesecsssssecccessces

I-5

LL10

Weight

Lecce

ccc

crc

ccc

cece

eae

cece

reece

cee

eee

cece

ees

I-5

1.11

Environmental

LimMitS

2...

ccc

cece cece

cece

were

eee

eects

ces

I-5

1.12

Destinations

vs.

Model

NameS

...

cc cw

ccc

wee

cee

eee

ceeee

I-6

SYSTEM

CONFIGURATION

2...

ccc

cc er

eee

wre

cece

eer

sec

neces

cceee

I-7

BLOCK

DIAGRAM

ccc

cece

ec ec

cee

eee

eect

eee

I-10

HARDWARE

OUTLINE

..c

ccc

cc ce

ccc

cece

eee

cece

eect

eee

weer

eceee

I-11

4.1

General

Description

eee

meee

eee

emcee

eee

essere

cces

I-11

4.2

Ventilation

......

ecm

meme

meee

reece

eee

ene

reese

sere

seeeencns

T-12

4.3

Memory

Configuration

weer

ccc

sence

cern

cnc

ccc

cece

ccececsscccces

I-12

4.4

Input/Output

Structure

ccc

cece

ccc ccc

ccc cee

eee

cece

cesses

sscees

T-14

DISASSEMBLY

PROCEDURE

ccc

ee ee cc

cee

eee

reer

eens

ese

sene

T-15

5.1

System

Unit/Plasma

Display

Unit

2...

ccc

cc we

ccc

cece

eens

T-16

5.2

System

Unit/Floppy

Disk

Drive

Unit

2...

ccc

cree

eee

I-18

5.3

System

Unit/Power

Supply

Unit/Speaker

......

worm

ewe

cece

ccc

cns

I-19

5.4

System

Unit/Handle

Mounting

Assembly/I/O

Board

2...

eee

I-21

5.5

System

Unit/CPU

Board

2...

ccc

ctw

ween

ence

neces

I-23

5.6

Precautions

When

Handling

MOS

ICS

Le.

ew ce

wee

eects

I-24

PARTS

LOCATION

2...

cc ec

ccc

cc ce ec ee

cee

cece

ere

eect

eee

tee

eee

nee

eees

I-25

WIRING

CONNECTION

2...

ccc

tee

cece

cree

cre

eee tee

eee

erect

eee

cees

I-27

7.1

JB-3301L

ccc ccc

cece

cer

cece

eee

ee ee

nee

seer

ese

sseceees

T-27

7.2

JB-3305

Lecce

ccc ccc ccc ccc cre

cee

reece

renee

eee

cence

eee

ses

ceees

T-31

REPLACEMENT

PARTS

LIST

2...

cee

ccc

cree

ccc

cree

cere

ere

sees

ences

ecees

I-35

TROUBLESHOOTING

nce

ccc

cece

ccc

cece

ween

cece

reece

ese

cence

ceccccce

I-37

9.1

PYELACS

cece

crew

cece

meee

were

sce

sence

cases

eseessccsccces

I-37

9.2

Tools

for

Troubleshooting

2...

cece

cee

cece

cess

esees

I-38

9.3

How

Use

Troubleshooting

HintS

......

cece

wee ccc

eee

cece

eee

I-39

9.4

Self-Diagnostic

TeSt

Lo...

ccc

ccc ccc

eee

wee

ccc

cence

ccc

eccee

T-69

9.5

DIAG

PKOGLAM

cece

eee

reer

ccc

rene

ree

rece

seceseserccseseceees

I-73

9.5.1

GENELAlL

Lecce

cree

ccc

reer ence

rere

csncssccsescescecsccece

I-73

9.5.2

a=)

oes

KO)

T-73

9.5.3

DiagnoStic

PYOGraM

2...

ccc

cecccccccccccccccsccces

I-74

9.5.4

DiagGnOStic

2...

cece

ccc

cence

crn

ccccerrsccccccccsccces

I-75

9.5.5

Test

All

DEVICES

Lo.

ccc

cee cee

cece

ccc

eee

cee

nce

rece

ececee

I-76

9.5.6

Test

Automatically

cece

cree

ccc

crew

creer

cer

ccccace

I-93

9.5.7

Change

2...

cece

rece cece

acca

cece

cecccescsccsceces

I-94

9.5.8

Brror

LISting

cece

ccc

arcs

ccc

cccseccccccsccccce

I-95

9.5.9

Error

MESSAGES

.ewwece

ccc

cern

scree

sccseccccecccccsces

I-96

9.5.10

EXit

cece

ccc

cc ce

ccc

cee wwe

ewww

eee

cere

ccc

cee

eens

eseeees

I-103

II.

LOGIC

UNIT

SPECIFICATIONS

ccc

wee

cee

wre

rece

eee

cree

sence

acceso

scccnens

II-1

APPEARANCE

2.2...

ccc

cece

ence

cece

reece

cece

rere

eee

cece

eres

eee

ecee

II-4

BLOCK

DIAGRAM

ccc

ecw

ce cc we

cme

wre

weer

cece

eee

cece

ees

erence

esces

II-5

MEMORY

USAGE

....

ccc

cece

ccc

cece cece

cceaee

eee

ace

II-7

4.1

Memory

Map

...ccccccccccccccccsrcccccc

cece

sec

ccc

resco

secs

oce

TI-7

4.2

Display

and

Video

RAM

ConStruction

2...

cece

eee

cece cece

nces

TI-9

4.2.1

Basic

Operation

and

Display

ModeS

..........cccccccceas

TI-9

4.2.2

Video

RAM

Configuration

and

Display

Dots

..............

IT-11

THEORY

OPERATION

2.2.2...

cccccccccscccccsccaccccvces

eee

wcrc

cer

cccee

II-18

5.1

GENEVAlL

Lecce

ccc

cece ence

ees

err

cscs

cess

cesr

scence

essessecs

II-18

5.2

System

Resetting

and

System

Clock

Generation

Circuits

.........

II-19

5.3

CPU

Lecce

ccc ccc

cence

ccc ccc

ence

rnc

ence

er ce

sce cee

ccc

cccccces

II-22

5.4

Microprocessor

Peripheral

CircuitS

....cccwcccccccnccsccssccces

II-22

5.5

Memory

Control

Circuit

Lo.

ccc

weer

ccc

cece

ccc

ence

ccc

esnces

TI-30

5.6

1D)

ITI-36

5.7

T/O

AddresS

DECOdGEY

2...

ccc

cece

wer

ccc

cence

cece

rece

II-39

5.8

Interrupt

Control

Circuit

co.cc

cence

cnc

ccc

nrc

cern

nce

ncece

ITT-45

5.9

Display

Circuit

coc

ecw

ccc

ccc cen

ccc

snc

ccsssccccessccessscses

TI-46

5.10

I/O

Interface

Circuit

co.cc

wc wc

ccc

cece

cere

ccc cee

TI-88

5.11

Programmable

Internal

Timer

(8253-5)

wc.

ccc

ewe

www

weer

eee

II-108

5.12

Switches

...........c0e0.

cere

eee

cere

emer

ese

serene

rece

scsccccce

IT-109

5.13

Option

Slot

Interface

oc.

ecw

ewe

ccc

ccc cer ccc

cree

ccvee

TI-112

5.14

Option

Slot

Connector

ccc

cece

recs

scccccccscccsccscces

II-114

~ii-

REPLACEMENT

PARTS

LIST

AND

DRAWING

6.1

CPU

Board

(PLSMX)

......

cece

eeee

wee

cence

cece

eeees

eee

eeee

6.2

I/O

Board

(PLSY)

.........ee

cece

twee

wee

ees

IIIf.

PLASMA

DISPLAY

UNIT

SPECIFICATIONS

@oee*ee*e@ee#*eeees#s###e8ee#eee#e#te#ee#e#eee#ee#e#s#tee#eese§ee#@

e#eoeee#e#e#e#e#8#e*#e8t+e@ee#8e¢ee8¢e2

e«

@#8

@®

@ @ @ @

1.1

Display

Panel

............

ccc

cere

cee

occ

cece

eee

1.2

DYiver

Unit

weer

eccccccccccccccccncncccenccccces

cece

cee

ences

1.3

Power

Supply

2.2...

ccc

nce

ncccccccese

APPEARANCE

.........4.

eee

econ

emer

cece

cen

eccce

cece

een eee

aees

BLOCK

DIAGRAM

.........cc

ccc

cvee

cece

ree

scce

eee

emer

enw

eee

cece

eee

OPERATIONAL

PRINCIPLES

.........

eee

ere

eee

cece cece

weer

crc ccc

sce

coe

4.1

Display

Panel

.....

eee

ceee

rrr

cece

eee

4.2

Display

Unit

eoee7#s#2k_eese#e#eeee#ee#ee#e#eee#teee8ee80e6hmtmUMmlUOMlUO

eoe@ecseeeesLseee#e#e#ee8e##e#e#eeeee#e?t#e#ee#e#8eeese

4.3

Description

Operation

..........2.ee0.

ccc

rece

eee ccc

eee

4.4

Names

and

Functions

Signals

.............

cece

ceeee

cee

4.5

Notes

.....

Ce ec

cee

rece

eer

ese

ces

cesvees

cece

eee

cece

cere

cence

DISASSEMBLY

PROCEDURE

..........

ecw

ecco sees

Cee

ewe

cece

rece

cece

ccc

5.1

Detaching

Display

from

System

Unit

......

eee

sees

ose

ees

5.2

Driver

Disassemby

Procedure

.......eeeee.

eee

ecw

ene

rer

TROUBLESHOOTING

........2cccee

occ

eeeeee

eee

ecw

meme

reer

cre

csnecccee

REPLACEMENT

PARTS

LIST

AND

DRAWING

...............

we me

cee

eee

err

cccee

7.1

Exploded

VieW

2...

cece

ccc

ceness

cece

rec

wer

cee

eee

ewe

neces

7.2

Plasma

Display

and

Driver

............

cee

ees

eee

cece

7.3

Connections

.......

ccc

ees

ccc

eeee

eee

mew eee

nee

eee

7.4

Circuit

Drawing

2...

cece

wee

cere

cee

Cece

eee cee

eee

eecee

cece

eee

APPENDIX

IC/LSI

CATALOG

.........2.

ccc

ewe

cee

cece

cee

ere

eccee

cece

erceee

A.l

IC/LSI

etc.

Assignment

..........

ce cc

ecw

cee

ccc

eee

ccc

eee

A.2

Specification

wo.

cece

ewe

eee

ccc

eee

ewes

wee

nce

iii

III-1

TII-1

IITI-1

III-3

TII-4

TII-5

ITI-5

III-6

III-11

ITI-11

TII-12

III-12

ITI-15

TII-17

TTI-21

IfI-21

TIIT-23

TITI-25

III-27

TII-39

IITI-39

TII-41

IV.

KEYBOARD

SPECIFICATIONS

...........eceee-

ccc

cee

eee

wee

eeeee

Iv-1

LAYOUT

AND

KEYBOARD

MARKINGS

2.2...

cc ee ce

ccc

cee

rece cece

ete

cee

IV-2

2.1

ASCII

VErsSion

ccc

ccc ccc ccc

ccc ccc

cece

eee

coc

eee

weet

eee

eect

ccees

IV-2

2.2

English

VErsSion

Lice

ccc

ccc ccc

cee ccc

cece

ccc

eee ewe

nese

eces

IV-3

2.3

Swedish/Finnish

Version

.....

ccc

cccce

cece

nce

ces

IV~-3

2.4

French

VErSion

ccc

cc cc cc

cw ec

ewe

cece

enc

cere

cesses

IV-4

2.5

GErMAN

VELSION

Lecce

cccccccccccccccccscesecccccssccsccsccesccees

IV-4

BLOCK

DIAGRAM

2...

ccc

cc ce

cece

ccc

ewe

etter

ee ee

eee

ees

ccece

IV-5

CIRCUIT

DESCRIPTION

2...

ccc ccc

ee ce

cee

weer

ccc

ete cee

eee eee

IV-6

4.1

Power

Supply

.........--.

ccm

reer

were

erence

errr

ens

cesses

sesssces

IV-6

4.2

OSCLILLACOL

Lecce

ccc ccc

ccc

cece

cee

eee

weeecees

IV~-6

4.3

Data

Type

and

Logic

........2ce

eee

mcm

mew

ccc

cece

ccc

cece

cces

TV-6

4.4

KBDATA

and

KBCLK

Output

Timing

2...

ccc

cee

cece

were

crew

eees

IV-7

4.5

HARD

RESET

ccc

cere

reece

wee cee

eee

ete

eee

sccens

IV-11

4.6

SCANNING

cecccccccccccv

cccccecccccc

ecec

ccc

cece cere

sccsccces

IV-11

4.7

Repeat

FUNCCION

cece

ccc

cece

ccc ccc ccc

cece

cerns

cece

secs

eeacesscceee

IV-14

SELF

TEST

Jo.

eee

ee ee

cece

ccc

eer

cee

eee

reece

eee

reso

cee

nccs

IV-15

5.1

Self

Test

Start

Condition

meme

ccc

cree

eee

merece

eect

crease

eeee

IV-15

5.2

Self

Test

Flowchart

2...

cc cc

ccc ccc

ecw

eee

cece

eee

ees

eeees

IV-16

DISASSEMBLY

PROCEDURE

2...

cc.

ccc

wcrc

ce ee

cree

eee

arte

sees

IV-17

6.1

Keyboard

cece

cence

crc

cane

ccc

aces seca

senses

ese

sessssesecceee

IV-17

6.2

Key

SwitcheS

cece

ccc

ccc ccc

ccc

cee

rece

cece

wees

see

cene

IV-19

TROUBLESHOOTING

ccc

re ec

ccc

eee

cee

eet

eee

weet

reece

eeeee

IV-22

REPLACEMENT

PARTS

LIST

AND

DRAWING

.....

ccc

ete

eee

eae

IV-27

8.1

Exploded

VIEW

ccc

cece

ccc

cre ccc

reece

cee

cree

cee

cces

ees

eesees

IV-27

8.2

Coard

Table

Lec

ccc

ee cc

wwe cee

cece

cere

eee

were

eee

IV-32

8.3

Circuit

D1iaAgGraM

occ

ccc ccc ccc

ses

ecscescsces

cece

ccc

eee

TV-33

“t

1V-

Table of contents

Other Panasonic Laptop manuals

Panasonic

Panasonic Toughbook CF-48P4FAUEM User manual

Panasonic

Panasonic Toughbook CF-T2FWATZBM User manual

Panasonic

Panasonic Toughbook CF-19KDRAG6B User manual

Panasonic

Panasonic Toughbook FZ-55 User manual

Panasonic

Panasonic Toughbook CF-F8EWAZZJM User manual

Panasonic

Panasonic CF-SV Series User manual

Panasonic

Panasonic CF-Y4 - Batt For User manual

Panasonic

Panasonic CF-30KTPAXJM User manual

Panasonic

Panasonic Toughbook CF-45KJ6GJEM User manual

Panasonic

Panasonic Toughbook CF-Y7BWAZAJM User manual

Panasonic

Panasonic Toughbook CF-U1A1B1G2M User manual

Panasonic

Panasonic CF29N3LGZBM - PERSONAL COMPUTER User manual

Panasonic

Panasonic CF-74CCBEBBM - Toughbook 74 - Core Duo 1.83... User manual

Panasonic

Panasonic CF-27 Series User manual

Panasonic

Panasonic CF-W5MWEZZBM - Toughbook W5 - Core Duo 1.06... User manual

Panasonic

Panasonic CF-T2 Series User manual

Panasonic

Panasonic Toughbook CF-07LZ5ZYEM User manual

Panasonic

Panasonic CF-27LBAGHEM - Toughbook 27 - PIII 500 MHz User manual

Panasonic

Panasonic Toughbook 19 Guide

Panasonic

Panasonic Toughbook CF-30CCSQZBM User manual

Panasonic

Panasonic Toughbook CF-W7BWAZZAM User manual

Panasonic

Panasonic CF-20E Installation and operating instructions

Panasonic

Panasonic Toughbook CF-C1ADAAZ6M User manual

Panasonic

Panasonic CF-30 Series User manual

Popular Laptop manuals by other brands

HP ze2401xt - Pavilion Notebook PC datasheet

Velocity

Velocity NoteMagix M10 quick start guide

Dell

Dell Alienware 17 R2 Service manual

Toshiba

Toshiba A105-S2236 Specifications

HP ENVY 17 Maintenance and service guide

Winbook

Winbook LM user guide

Dell

Dell Inspiron 1464 Setup guide

Dell

Dell Inspiron 15R 5537 quick start guide

HP PROBOOK 4520S Maintenance and service guide

Dell

Dell Latitude ATG D620 Service manual

Sony

Sony VAIO PCG-FX270 Specifications

Dell

Dell Latitude 7310 Service manual

Dell

Dell Precision GU806 Quick reference guide

Sony

Sony VAIO PCG-R505JLK user guide

Lenovo

Lenovo THINKPAD X32 Setup guide

HP Compaq tc4200 Software guide

Toshiba

Toshiba mini NB300 specification

Lenovo

Lenovo ThinkPad X201 Tablet Manual