Toshiba T-Series T1200 Bedienungsanleitung

1.1

GENERAL

Toshiba

Personal

Computer

T1200

(hereinafter

referred

T1200)

portable

personal

computer

which

compatible

with

IBM

situated

higher

rank

portable

computer

than

Toshiba

TllOO

PLUS.

provides

many

powerful

functions

spite

its

compact

size

and

internal

battery

pack

which

removal.

Hardware

the

T1200,

most

chips

are

C-MOS

type

that

the

power

consumption

very

little

and

Gate

Array

chips

are

applied

that

very

compact

and

light

weight.

The

Tl200

composed

follows:

System

PCB

(Printed

curcuit

board)

3.5-inch

floppy

disk

drive

3.5-inch

hard

disk

drive

LCD

(Liquid

crystal

display)

Keyboard

Intelligent

power

supply

PCB

Built-in

modem

FIGURE

1-1

T1200

Personal

Computer

1-1

3.5-inch

Floppy

disk

drive

(FOO)

double-sided,

double-density,

double-track

with

storage

capacity

720

kilobytes

(formatted).

3.5-inch

hard

disk

drive

(HOD)

with

storage

capacity

megabytes

equipment

the

former.

The

high-resolution

liquid

crystal

display

(LCD)

with

pixels

640

columns

and

200

rows.

The

keyboard

has

keys.

For

most

applications

can

used

exactly

standard

typewriter

keyboard.

Intelligent

power

supply

apart

from

those

ordinary

power

serving

functions,

this

unit

contains

so-called

"one-chip

microcomputer",

and

controls

the

whole

system

PCB, FOO,

HOD

and

HOC.

The

built-in

modem

expands

the

capabilities

your

system.

The

built-in

modem

enables

the

system

communicate

with

asynchronous

communications

device

through

telephone

line.

The

modem

can

operate

communications

either

low

(300

bps)

high

(1200

bps)

speed.

The

T1200

provided

connecting

the

optional

devices

the

rear

panel

the

system.

There

are

six

connectors

such

parallel

printer,

RGB

direct

drive

CRT

display,

external

FOO,

external

key

pad

and

RS-232C

device.

1-2

1.2

SYSTEM PCB

System

PCB

composed

the

following

devices:

Central

processor:

CPU

(80C86-2)

(9.54

MHz/4.77

MHz)

Numeric

data

processor:

NPU

(8087,

optional)

o Memory

System

memory

Expanded

memory

BIOS

ROM

Video

RAM

640

kbytes

384

kbytes

System

support

elements

Direct

memory

access:

DMA

(82C37)

Timer

(82C53)

Programmable

interrupt

controller:

PIC

(82C59)

Floppy

disk

controller:

FDC

(8565)

Keyboard

controller:

KBC

(80C49)

Acynchronous

communication

element:

ACE

(8570)

Gate

array

Bus

driver

Bus

controller

EXP-MEM

controller

Display

controller

1-3

1.2.1

Jumper

straps

The

system

PCB

has

five

jumper

straps~

PJ17,

PJ18,

PJ19,

PJ20,

and

PJ2l.

The

following

figure

shows

location

the

jumper

straps.

PJ21

PJ18 PJ19

PJ20

I11III

PJ17

FIGURE

1-2

Jumper

Straps

Location

1-4

The

following

table

shows

function

the

jumper

straps.

TABLE

1-1

Jumper

Strap

Functions

Jumper Pins Description

F/F

type

PJ17

1 2

F/H

type

PJ18

D 3 Normal.

PJ18 PJ19 1 2

PJ19

PJ18

1 G When connect an

ICE

the

co-processor socket.

PJ19D

D Noco-processor.

PJ20

1 2 When connect a co-processor

the

co-

processor socket.

D Display a normal

font.

PJ21

1 2 Displays a

North

Europian (Denmark)

font.

1-5

1.3

3.5-rRCB

PLOPPY

DISK

DRIVE

The

floppy

disk

drive

(FDD)

used

the

T1200

high

performance,

high

reliable,

slim

sized

FDD

for

3.5-inch

floppy

disks

with

recording

capacity

Mbyte

(unformatted)

double-sided,

double

density

and

135

tracks

per

inch

operation.

The

specifications

are

following

table.

FIGURE

1-3

3.5-inch

FDD

T~BLE

1-2

3.5-inch

Floppy

Disk

Drive

Specifications

Item Specifications

Storage Capacity (kilobytes)

1000

(unformatted)

720

(formatted)

Number

Heads 2

Number

Track perSide

Track

Access

(milliseconds) 6

Head Settling Time (milliseconds)

Track Density (tracks persecond)

135

Motor

Start-up Time (milliseconds)

500

Data Transfer Rate (kilobits per second)

250

Rotational

Speed

(revolutions per minute)

300

Recording

Method

MFM

(Modified

frequency

modulation)

1-6

1.4

HARD

DISK

DRIVE

The

hard

disk

drive

(HDD)

random

access

storage,

having

recording

capacity

Mbytes.

This

equipped

with

the

storage

media

non-removable

3.S-inch

magnetic

disks

and

mini-winchester

type

magnetic

heads.

The

specifications

are

following

table.

FIGURE

1-4

3.5-inch

Hard

Disk

Drive

TABLE

1-3

3.5-inch

Hard

Disk

Drive

Specifications

Item Specifications

Storage Capacity (megabytes) 25.3

(unformatted)

21.4

(formatted)

Number

Heads 2

Number

Track perSide 615

Access

Time (milliseconds) (minimum) 24

(average) 78

(maximum) 130

Data Transfer Rate (megabits per second) 7.5

Rotational Speed (revolutions per minute) 2597

Recording

Method

2-7

RLL

(Run

length

limited)

1-7

1.5

BARD

DISK

COR~OL

PCB

Hard

disk

control

PCB

(HOC)

accompanied

hard

disk

drive

(HOD)

and

connects

the

system

PCB

through

cable.

This

HOC

can

interface

the

HOD

the

system

PCB.

The

specifications

are

following

table.

FIGURE

1-5

Hard

Disk

Control

PCB

TABLE

1-4

Hard

Disk

Control

PCB

Specifications

Item

Specifications

Encoding method 2-7

RLL

(Run Length Limited)

Data Transfer Rate (megabits per second) maximum

7.S

Write

Precompensation

time

(nanoseconds)

Sectorina Soft

1-8

1.6

KEYBOARD

The

keyboard

mounted

the

system

and

has

keys.

These

consist

standard

keys,

function

keys,

cursor

keys,

functional

keypads,

and

key.

The

keyboard

just

key

matrix

built

the

above

keys.

The

keyboard

connected

the

keyboard

controller

the

system

PCB

through

22-pin

flat

cable.

FIGURE

1-6

Keyboard

1-9

1.7

LIQUID

CRYS~AL

DISPLAY

The

liquid

crystal

display

(LCD)

graphics

type

display

unit

which

has

resolution

640

horizontal

(or

column)

200

vertical

(or

row)

directions.

This

unit

composed

the

display

panel,

power

supply

and

driver

circuits.

This

receives

timing

pulses,

four-bit

data

signals,

+5V

and

-22V

power

inputs

and

contrast

control

input

from

the

system

PCB.

All

timing

pulses

and

data

signals

are

TTL

level

compatible.

Specifications

are

following

table.

FIGURE

1-7

Liquid

Crystal

Display

TABLE

1-5

Liquid

Crystal

Display

Spesifications

Item Specification

Outline

Dimension (mm) 275.0 (W) x 126.0 (H) x 15.8(D)

Number

Dots 640 x 200

dots

Number

characters

(2000) Characters

(8 x 8

dot

format,

alpha-numeric)

Clear Viewing Area (mm) 231.0 (W) x 105.0 (H)

Dot

Size

(mm) 0.32 (W)

,0.46

(H)

Dot

Pitch (mm) 0.35 (W)

,0.49

(H)

Weight

(gram) Max.

500

1-10

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