Radio Shack TRS-80 Model 100 Bedienungsanleitung

MODEL

PORTABLE

COMPUTER

Catalog

Numbers

26-3801/3802

CUSTOM

MANUFACTURED

FOR

RADIO

SHACK

DIVISION

TANDY

CORPORATION

Radio

/hack

Service

Mmm

3801/3802

TABLE

CONTENTS

PAGE

NUMBER

INTRODUCTION

GENERAL.

SPECIFICATIONS.

CONNECTORS,

SWITCHS

AND

CONTRAST

II.

disassembly/reassembly

DISASSEMBLY.

REASSEMBLY

Ill

PREVENTIVE

MAINTENANCE

ADJUSTMENT

THE

TRS-80

Model

100.

CLEANING

THE

DOBY

AND

LCD

DISPLAY-

MODEM

TRANSMITTING

LEVEL

ADJUSTMENT

IV.

THEORY

OPERATION

GENERAL.

CPU

(MSM80C85ARS)

MEMORY

ADDRESS

DECODING

AND

BANK

SELECTION

MEMORY

MAP.

I/O

MAP

AND

I/O

PORT

DESCRIPTION.

KEYBOARD

CASSETTE

INTERFACE

CIRCUIT

PRINTER

INTERFACE

CIRCUIT.

BARCODE

READER

INTERFACE

CIRCUIT.

BUZZER

CONTROL

CIRCUIT.

SYSTEM

BUS

LCD

INTERFACE

CIRCUIT.

CLOCK

CONTROL

CIRCUIT.

SERIAL

INTERFACE

CIRCUIT.

LIQUID

CRYSTAL

DISPLAY.

POWER

SUPPLY

AND

AUTO

POWER

OFF

CIRCUIT

RESET

CIRCUIT.

TROUBLE

SHOOTING

HOW

MAKE

USE

THIS

SECTION.

TROUBLE

SHOOTING

GUIDE.

CHECK

LIST.

VI.

EXPLODED

VIEW

AND

PARTS

LIST

EXPLODED

VIEW.

PARTS

LIST

VII.

DIAGRAMS

SCHEMATIC

DIAGRAM.

P.C.B.

VIEW.

4-10

4-11

4-12

4-13

4-15

4-17

4-26

.4-32

.4-34

5-12

appendix

installation

OPTIONAL

RAMs

AND

ROM

appendix

b/character

code

table

APPENDIX

LSI

DESCRIPTION

MSM80C85ARS

(CPU)

MSM81C55RS

(PIO)

IM6402

(UART)

C11

MPD1990AC

(TIMER)

...

015

MC14412

(MODEM)

C-19

TC5518BF-25

(RAM)

...

LH-535618

(ROM)

C-28

C-31

FIGURE

NUMBER

DESCRIPTION

PAGE

NUMBER

1-1

1-2

2-1

4-1

4-2

4-3

4-4

4-5

4-6

4-7

4-8

4-9

4-10

4-11

4-12

4-13

4-14

4-15

4-16

4-17

4-18

4-19

4-20

4-21

4-22

4-23

4-24

4-25

4-26

4-27

4-28

4-29

4-30

4-31

4-32

4-33

4-34

4-35

4-36

4-37

4-38

6-1

6-2

7-1

7-2

7-3

7-4

7-5

7-6

Front

View.

Keyboard

Layout.

Disassembly

Procedure.

System

Block

Diagram.

Internal

Wiring

Diagram

RAM

Pack

Address

Decoding

for

RAM

Chip.

Standard

and

Optional

ROM

Selection

....

Memory

Map.

I/O

Address

Decoder.

Condition

Pressing

“T"

Key.

Modulation

Circuit

Cassette

Interface

Demodulation

Circuit

Cassette

Interface

Remote

Circuit

Cassette

Interface.

Printer

Interface

Circuit.

Bar

Code

Reader

Interface

Circuit.

Buzzer

Control

Circuit.

LCD

Interface

Circuit.

LCD

Interface

Timing

Chart.

Data

Input

Condition

mPD1990AC

....

Time

Set

Condition

/uPD1990AC.

Time

Read

Condition

/iPD1990AC.

Data

Output

Condition

/iPD1990AC

Control

Load

Condition

IM6402

Status

Read

Condition

IM6402

Data

Transmission

Condition

IM6402

Data

Reception

Condition

IM6402

MODEM/RS-232C

Exchange

Circuit.

RS-232C

Interface

Circuit.

MODEM

LSI

and

Peripheral

Circuit.

Transmission

Filter

Circuit.

Reception

Filter

and

Comparator

Circuit

...

MODEM

Connector

Interface

Circuit.

Construction

LCD

Panel

Operation

Theory

LCD

Panel.

LCD

Electrodes.

LCD

View

Angle

HD44103

Internal

Block

Diagram.

HD44102

Internal

Logic

Diagram

LCD

Waveform.

Power

Supply

and

Reset

Circuit.

Oscillation

Waveform.

Exploded

View.

Bottom

View.

MAIN

P.C.B.-Schematic

Diagram.

LCD

P.C.B.-Schematic

Diagram.

MAIN

P.C.B.

MAINP.C.B.

LCD

P.C.B.

LCD

P.C.B.

.4-

4-10

.4-11

4-12

.4-13

4-14

.4-15

.4-16

4-16

.4-17

.4-18

.4-19

4-19

4-20

.4-21

.4-22

.4-23

4-24

4-25

4-26

4-27

4-28

4-29

4-30

4-31

4-33

A-

A-1

C-1

80C85

Functional

Block

Diagram.

C-

U‘4

C-

0-4

C-

0-0

C-9

C-10

O-o

C-9

81C55

Configuration

and

Block

Diagram

...

C-11

C-13

O-1

C-14

-1

C-14

O-1

C-13

81C55

Timer

Output

Waveform

Countdown

from

C-15

O-

C-16

0-1

C-20

C-21

O-

C-18

C-19

A/PD1990AC

Command

Input

Timing

Diagram.

/iPDI

990AC

Data

Input/Output

Timing

Diagram.

C-22

C-23

C-26

O-ZU

C-26

C-27

w"Zo

TPRR1

RRF-9R

avnut

C-28

C-29

U“Z

C-29

u'Zu

C-30

o-z

C-31

C-32

C-30

LH-53518

Timing

Diagram.

C-32

TABLE

NUMBER

DESCRIPTION

PAGE

NUMBER

I/O

Man

.4-

.4-8

4-Z

.4-12

.4-13

4-4

.4-21

4-0

.4-22

4-D

C-1

80C85

Interrupt

Priority,

Restart

Address

and

Sensitivity

C-

C-7

u-z

C-7

U-o

C-

0-4

C-15

v‘0

C-28

0-0

C-7

LH-535618

Assignment.

C-31

SECTION

INTRODUCTION

FRONT

VIEW

1-1

INTRODUCTION

GENERAL

This

manual

prepared

for

the

TRS-80

Model

100

technicians

working

field

repair

centers.

The

user

this

manual

should

acquainted

with

Z-80

and

80C85

(8085)

microprocessors

and

also

with

81C55

PIO

and

IM6402

UART

LSIs.

Detailed

technical

information

for

those

microprocessors

and

LSIs

provided

APPENDIX

this

manual.

This

manual

consists

seven

sections

and

three

appendices:

•

Section

This

section

gives

general

information

the

TRS-80

Model

100

such

specifications,

switch

functions

connectors

and

special

features.

•

Section

This

section

describes

the

disassembly

and

reassembly

procedures.

•

Section

III

This

section

describes

preventive

maintenance

and

adjustment

the

TRS-80

Model

100.

•

Section

This

section

describes

general

theory

the

TRS-80

Model

100

operation,

including

operational

theory

main

P.C.

Board

assembly,

LCD

Board

assembly

and

keyboard

assembly.

•

Section

This

section

describes

how

troubleshoot

the

TRS-80

Model

100.

•

Section

This

section

provides

part

list

and

exploded

view

the

TRS-80

Model

100.

•

Section

VII

This

section

provides

schematics,

P.C.

Board

diagrams

and

silk

screen

views

P.C.

Boards

the

TRS-80

Model

100.

•

Appendix

provides

instructions

for

installing

the

optional

ROM

and

additional

RAMs.

•

Appendix

provides

character

code

chart

the

Model

100.

•

Appendix

provides

technical

information

microprocessors

and

UART

LSIs.

The

Model

100,

portable

computer

that

fits

easily

into

regular

sized

briefcase,

has

many

special

features

and

functions

for

home

and

business

use.

Its

five

built-in

Application

Programs

offer

various

uses:

•

BASIC

lets

you

write

and

run

your

own

programs.

Also,

BASIC

provides

various

mathematic

functions

(as

described

PART-1

owner's

manual).

•

TEXT

Lets

you

create

new

files

containing

memos,

documents

text

any

kind.

•

ADDRSS

lets

you

get

information

such

addresses

and

telephone

numbers

from

the

ADRS

file.

•

SCHEDL

lets

you

get

information

concerning

appointments,

meetings,

etc.,

from

the

NOTE

file.

•

TELCOM

lets

you

use

the

TRS-80

Model

100

auto-dialer

for

computer-to-computer

communi¬

cations.

1-3

addition

Application

Programs,

you

can

connect

the

following

peripherals

the

Model

100:

•

Cassette

recorder

store

programs

data

cassette

tape.

•

Printer

copies

documents,

programs

data.

•

Bar

code

reader

identify

the

product

marking

codes

various

marchandises.

(Optional/extra

soft¬

ware

required.)

•

Communication

interface

transfer/receive

data

to/from

the

Model

100

and

another

computer

(Acous¬

tic

Coupler

Modem

Cable

required).

SPECIFICATIONS

(1)

Main

Components

(a)

Keyboard

keys

(9x8

matrix)

•

Alphabet

keys

•

Number

keys.

•

Picture-control

keys

•

Function

keys

•

Special

symbol

keys

•

Mode

keys

....

•

Other

special-use

keys

(b)

LCD

display

•

Display

panel.

240

Full-dot

matrix

(c)

(d)

(e)

1/32

Duty

1/6.66

Bias

•

Dot

pitch.0.8

0.8

•

Dot

size

0.73

•

Effective

display

area.191.2x50.4

Operation

batteries

•

Batteries....

Four

type

Alkaline-manganese

batteries

•

Operation

time.

Five

days

(At

four

hours/day)

Twenty

days

(At

one

hour/day)

(Note:

With

I/O

disconnected)

Memory

protection

battery

(On

main

P.C.B.)

•

Battery.

Rechargeable

battery

•

Protection

time

.About

days

KB)

About

days

(32

KB)

•

Recharge

method.Trickle

charge

adapter

operation

batteries

LSIs

•

CPU.80C85

Code

and

compatible

with

8085

•

ROM

.Maximum

Banks

KB)

Standard

Option

1-4

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