Itel UD002441-1 Operation, Service And Parts Manual

MAGNETIC TAPE

WORD

PROCESSOR

UD002441-1

FIELD

ENGINEERING

DIVISION

SEPT., 1972

This information

is

current

as

of

September 1972.

ITEL

CORPORATION

FIELD

ENGINEERING

DIVISION

Technical Support Operations

10435 North Tantau Avenue

Cupertino,

California 95014

Tel: [phone] TWX 910-338-0280

Printed

in

U.S.A.

September

1972

Copyright(£)

1972

Chapter

1

2

3

4

2441-1

CONTENTS

GENERAL

INFORMATION.

1. 1 Introduction

1. 2 Manual

Content

1.

2.

1

Chapter

1,

General

Information.

1.

2.2

Chapter

2,

Installation.

1.

2. 3

Chapter

3,

Operation

.

1.

2. 4

Chapter

4,

Theory

of

Operation.

1.

2. 5

Chapter

5,

Maintenance

1.

2.

6

Chapter

6,

Checks

and

Adjustments

1.

2.7

Chapter

7,

Error

Analysis

1.

2.8

Chapter

8,

Replacement

Procedures

1.

2.9

Chapter

9,

Diagrams

1. 3 System

Description

1.

3.1

Microprocessor

1.3~2

Keyboard

.

1.

3.

3

1.

3.4

1.4

Printer.

Ma

gnetic

Tape

Transports

Specifications.

INS TA

LLA

TION .

2. 1

Unpacking.

2.1.

1

Unpacking

the

Typewriter

Unit

2.1.2

Unpacking

the

Console

Unit

.

2. 2

System

Interconnections

2. 3 Preoperational

Checkout

.

2.3.1

Power

Supply

Voltage

Checkout.

2.3.2

System

Diagnostic

Checkout

.

OPERATION

.

3.1

Keys,

Controls,

Indicators

and

Alarms

.

3.

1.

1

Basic

Operation

Keys

.

3.

1.

2 Mode

Keys

.

3.

1.

3

Action

Keys

3.

1.

4

Encoded

Function

Keys.

3.

1.

5

Console

Controls

and

Indicators.

3.

1.

6

Alarms.

3.2

Operating

Instructions

.

THEORY

OF

OPERA

TION .

4. 1

Functional

Description

.

4. 2 Microprocessor.

4.2.1,

Read

Only

Memory

(ROM)

Program

4.2.2

ROM

Address

Register.

Page

1-1
1-1
1-1
1-1
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2
1-2

1-3
1-3

1-4
1-4

1-5

2-1
2-1

2-1

2-1

2-3

2-5
2-5

2-7

3-1
3-1
3-1

3-4

3-6

3-8

3-11

3-12

3-13

4-1
4-1
4-1
4-1

4-6

i

CONTENTS (CONT)

Chapter

5

4.2.3

4.2.4

4.2.5

4. 3 Buffer

4.4

4.5

4.6

4.7

4.8

4.9

4.10

4.11

4.12

4.13

MAINTENANCE .

5. 1

5.2

5.2.1

5.2.2

5.

3

5.3.1

5.

3.2

5.4

5.4.1

5.4.2

5.4.3

Return
General
Arithmetic

Tape
Write
Read

Tape
Motor
Keyboard
Printer
Miscellaneous,
Display
DC

Power

Safety
Maintenance

Objectives.

Basic

Tools

Tools
Test

Power

Voltage

Logic

Use

Address

I/O

and

Control

Encode
Decode
Read/Write

Control.

Interface

Interface.

Panel

Supplies

Precautions

Considerations

and

Servicing

Equipment

Supply

Levels

Levels

of

Probes

Purpose

Logic

Buffer

.
.

and

Clock

.

Philosophy

Voltage

.

Register

(GP)

and

Unit

(ALU) .

Control

Tape

.

and

Aids

.

Read

IC .

.

Main

(M)

Only.

Registers

Page

4-7

4-8
4-8
4-8
4-9
4-9
4-9
4-10
4-10
4-12
4-12
4-13
4-13
4-13

5-1
5-1
5-1
5-1
5-1
5-2
5-2
5-2
5-6
5-6
5-6

5-7

ii

6

CHECKS AND

6.1

6.2

6.3

6.4

6.5

6.6

6. 7

6.8

6.9

6.10

6.11

6.12

6.13

6.

6.

6.

General.
PDA
ROM
Branch
Branch
PDA

G-Registers
H-Registers
ALU

Buffers

Data

Data

Keyboard

14

Printer

15

Transport

15.1

Installation

Test

Test

Test

Bus
Bus

Run

ADJUSTMENTS

·

Test
on

Data

·

Test
Test

.

Test

·

Test

Test

Forward

.

Out

(Lamp)

In

(Thumbwheel)

Strobe

Tests

Test

.

. . .

Normal

Test.

Test

Test

6-1
6-1
6-1

6-6

6-7

6-9
6-10
6-10
6-11
6-12
6-13
6-14

•

6-15
6-16

6-17

6-18
6-18

2441-1

CONTENTS (CONT)

Chapter

7

8

6.15.2

6.15.3

6.15.4

6.15.5

6.15.6

ERROR

7.1

7.2

Run

Reverse

Run

Forward

Run

Reverse
Speed
Normal

ANALYSIS .

General.

Recommended

REPLACEMENT

8.1

8. 2

8.3

8.4

8.4.

8.4.2

8.4.3

8.4.4

8.4.5

General.

Printer
Keyboard
Transport

1

Head

Motor
Lock

BOT/EOT

Cassette

and

Removal

Assembly

Solenoid

Installation

Normal

Fast

Fast

Tests

Write

.

Forward

Troubleshooting

PROCEDURES

and

Removal

Removal

and

and

Removal

Removal

and

Removal

Sensor

In

Place

Assembly
Switch

Test

Test

Test

.

Test

Installation

Installation.

Installation

and

Installation.

and

and

Sequence.

Installation.

Installation

Removal

File

Protect

and

Installation.

Switch

Page

6-20
6-21
6-22
6-23
6-26

7-1
7-1
7-1

8-1
8-1
8-1
8-1
8-2
8-4
8-6
8-6
8-7

Removal

8-8

9 DIAGRAMS

9. 1

9.2

Figure

1-1
1-2

2-1
2-2
2-3
2-4
2-5

3-1

3-2
3-3
3-4

3-5
4-1

4-2
4-3

Magnetic
Simplified

Typewriter

Console

Typewriter
System
Power

Basic
Mode
Action
Encoded
Console

Console,
Detailed
K-Page

General.

System

Tape

Wire

Word

System

Unit

Packaging

Unit

Packaging

Cover

Interconnections

Supply

Operation

Interconnect

Keys

Keys.

Keys

Function

Controls

Keys.

and

Right-Hand

System

Memory

Block

Structure

List

ILLUSTRATIONS

Processor.

Block

Removal

Diagram

Panel

Indicators.

Interior

View.

Diagram.

9-1
9-1

9-24

Page

1-1
1-3

2-2
2-2
2-4
2-4
2-6

3-1
3-4
3-6
3-8
3-11

4-2
4-4
4-5

2441-1

iii

ILLUSTRATIONS

(CONT)

Figure

4-4
4-5
4-6
4-7
4-8
4-9

5-1
6-1

Major-Page
12-Bit
ROM
Bi-Phase
Motor
System

PDA
PDA

Schematics:

Address

Address

Control

Clock
Controls
Installation

Printer
Keyboard
Miscellaneous,
ROM
ROM
Return

Main
Arithmetic
Buffer
Buffer

Tape
Read
Write
Motor

Cassette
Tape

Display
DC
Keyboard
PDA
PDA

Memory

Word

Register

Serial

Power

Data

Block

Timing
and

Indicators,

Interface

Interface

Program
Address

Address

and

General

Logic

I/O

(Read

Control
Control
Decode

Encode

Control

Heat

Read/Write,

Panel

Supply

Logic

ROM

and

Switch

and

Structure

Format

Diagram

,

(socket

(socket

Clock,

(sockets

Register

Register

Purpose

Unit

Only & Read/Write)

(Read

(Read/Write & Read

(Read/Write & Read

(Read/Write)

(sockets

Sink

Tape

.

Controls

Indicator.

1)

3),

and

IC

(socket

5,

6, 7,

(socket

(socket

(socket

Only & Read/Write)

R/WJ1

,

Read

9)

Register

12) ,

(socket

and

Only

and

8)

,

10) ,
(socket

Only)

Only)

19)

ROJl).

(sockets

4)

11),

(sockets

(sockets

(sockets

(sockets

R/WJ2

13

and

17

18

14

and

and

and

15) .
and

16)

20)

21).

ROJ2)

Page

4-5
4-6
4-7
4-10
4-11

4-14

5-4

6-1

9-2
9-3
9-4
9-5
9-6

9-7
9-8

9-9
9-10
9-11
9-12
9-13
9-14

9-15
9-16
9-17
9-18
9-19
9-20
9-21/9-22
9-23

Table

1-1

2-1

3-1
3-2

iv

Dual

Station

Power

Encoded
Encoded

MTWP

Supply

Function
Function

Voltages.

TABLES

Specifications

Codes
Keys.

Page

.

1-5

2-7

3-5
3-8

2441-1

TABLES (CONT)

Table

4-1
4-2

6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11

7-1
7

-2

8-1
8-2
8-3

Card
Other

PDA
Error
ROM
Branch

Branch
ALU
Buffers
Data

Transport
Speed
Normal

PWA's

Troubleshooting

Transport

Head
BOT/EaT

Cage

Routine

Test

Bus

Assembly

PWA's

Console

Addresses

Tests.

Tests

on

Data

"Error

Test

Out

Tests

Conversions

Write

Affected

Power

Sensor

PWA's

Addresses

.

Test

"Error

Addresses"

"Error

(Lamp)

Forward

Addresses"

Error

.

According

Chart

Connections

Connections

Assembly

Test

Analysis

"Error

.

Addresses"

Sequence

Addresses"

to

Priority.

.

Connections.

Page

4-3
4-3

6-4
6-5
6-7
6-8

.

6-9
6-13
6-14
6-15
6-20
6-24
6-27

7-2

7-3

8-3

8-4

8-7

9-1

Diagrams.

9-1

2441-1

v

/

CHAPTER 1

1.1

INTRODUCTION

This

manual
single
Both
printer,

form

ports

and

systems

and

an

automatic

are

attractive

provides

dual

station

combine

one

(single

contained

case

suitable

GENERAL

installation,

Magnetic

the

functions

station)

writing

in a compact

system.

for

secretarial

INFORMATION

operation,

Tape

Word

of a Microprocesflor,

or

two (dual

The

Microprocessor

console.

use.

and

Processor

station)

The

keyboard

service

(MTWP) ,

magnetic

instructions

shown

an

electronic

tape

and

magnetic

and

printer

for

both

in

Figure

keyboard

transports

tape

trans-

are

housed

the

to

1-1.
and

in

an

Console

Figure

1.2

This

ided

MANUAL

Magnetic

into

nine

CONTENT

Tape

Word

chapters.

The

chapter.

1.2.1 Chapter 1, General Information

This
ment

chapter

description,

provides

and

introductory
the

2441-1

1-1.

Magnetic

Processor

following

material, a description

specifications

\

Tape

Operation,

paragraphs

for

the

Word

Service,

briefly

system.

Typewriter

Processor

and

Diagrams

describe

of

manual

Manual

the

contents

contents,

is
of

an

div­each

equip-

1-1

1.2.2 Chapter 2, Installation

Chapter 2 discusses
installing a system.
vided

1.2.3 Chapter

in

this

chapter

3,

Chapter 3 identifies
and

indicator

1.2.4 Chapter

The

theory

and

timing

1.2.5 Chapter

on

4,

of

operation

diagrams

5,

Chapter 5 outlines
required

1.2.6 Chapter 6, Checks and Adjustments

Electrical

special

and

mechanical

unpacking,

A

preoperation

to

verify

Operation

and

describes

the

console,

Theory of Operation

is

provided

are

used,

Maintenance

safety

tools

precautions,

and

test

inspection,

that

and

where

equipment.

checks

the

the

system

in

and

and

checks

and

system

function

alarm.

this

chapter.

necessary,

presents

adjustments

the

interconnections

adjustments

is

operating

of

each

key

Block

to

support

maintenance

are

contained

procedure

properly.

on

the

keyboard,

diagrams,

the

text.

philosophy,

in

required

is

simplified

and

Chapter

when

also

control

lists

6.

pro-

drawings,

1.2.7 Chapter 7, Error Analysis

This

chapter

1.2.8 Chapter 8, Replacement Procedures

Chapter 8 presents

1.2.9 Chapter 9, Diagrams

This

chapter

Programmed

1.3 SYSTEM DESCRIPTION

The

ITEL
tronic
only
the

system

the

capabilities

single

dual

• A

contains

information

removal

contains

the

Diagnostic

or

dual

for

automatic

station

of

system

the

single

Microprocessor.

and

schematic

Aid

(PDA). The

station

writing.
will

station

designed

installation

Magnetic

be

discussed.

to

diagrams

system

Tape

The

functions

system.

assist

in

procedures.

for

the

wire

Word

Processor,

of

The

dual

The

major

troubleshooting.

system

list

is

as

also

well

included.

(MTWP)

both

are

identical;

station

does,

components

as

those

is

therefore,

however,

of

the

for

an

elec-

extend

system

the

are:

• A

full

duplex

1-2

electronic

keyboard.

2441-1

•

An

electronic

printer.

Figure

• Two

1-2

provides a simplified

TYPEWRITER

magnetic

~~

..

alT

DATA

FLOW

tape

transports.

block

1-------1

TYPOWRITER INTERFACE

r-----

LSlNGLE

STATlDN

SYSTEM

-----

diagram

-

__

~

MAGNETIC TAPE

TRANSPORTS

DUAC

...

"ON

ovm.

of

the

system.

CONSOLE

~----------l

II

, , I

k::j

Ii'

, , I

MICROPROCESSOR

L ________ j

----:

___

I .

, I

! i

! i

~

i---

L

__

BUFFERS

_

---l

-~

'

i

I

i

1.3.1 Microprocessor

Microprocessor

The
These

It

is
keyboard,
mation
Memory

1.3.2 Keyboard

The
of
rather
from
system

to

sixteen-bit

also

has

processed

is

gated

portion

keyboard

this

type
than

the

keyboard.

during

indicate

an

eight-bit

is

processed

I?rinter,

on

of

used

of

keyboard,

directly

normal

the

present

Figure

has

instruction

and

and

the

in

to

A

1-2.

the

parallel

on

both

off

the

Microprocessor.

this

system

signals

the

printer.

standard

typing

operation.

Simplified

capability

words

this

magnetic

data

operations.

are

data

bus

data

bus

is a full

are

All

44-key

These

routed

System

of

storing

used

(DB.0

bus.

tape

by

The

transports

the

duplex

through

system

typewriter

Certain

lighted

16 BtT

Block

4096

to

control

through

instruction

functions

keys

DB7). Any

data

bus

together

electronic

the

array

keys

also

INSTRU~TlON

WORD

BUS

Diagram

sixteen-bit

the

operation

links

words

keyboard.

Microprocessor

are

inputs

are

lighted,

monitor

instruction

information

the

Microprocessor,

into one

stored

controlled

information

the

words.

of

the

system.

which

unit.

in

Through

when

Microprocessor

Infor-

the

Read

to

the

by

the

into

depressed,

Only

the

use

printer,

operator

the

2441-1

1-3

and

flash

to

key

on

the

keyboard

1.3.3 Printer

The

printer,
character
text

such
six

lines

at a time).

as

per

display

used

letters,

inch

input, output, and

and

each

alarm

as

the

output

It

operates

device

specifications,

(single

space)

or

system

is

discussed

for

at

speeds
contracts,

three

the

up

lines

error

conditions.

in

detail

system,

to 30

characters

etc.

per

inch (double

is

of a serial

The

15-inch

The function

in

Chapter 3 of

per

long

space).

this

type

(prints a single

second

platen

of
manual.

on

general

indexes

each

at

There
feed.
controls
ASCII
direction
1/60
line
1/48

Character
wheels

Two
by

are

code

of

spaces

of

types

the

operator.

Each

are

and

an

an

are

three

motion

for

inch),

(indexes)

inch).

sets

easily

of

carbon.

1.3.4

The

Magnetic

dual

station
store a single
8-bit

word

enroute

these

of

in

the

on

to

the

8-bit

buffer

tape.

basic

is

sent

down

the

next

number

or

an

are

provided

interchanged

ribbon

cartridges

The

Tape

Transports

system

line

of

the

data

printer.

characters.

and

then

printer

motions;

controlled

the

eleven

character

of

printing

ll-bit

that

the

word

paper

in

the
by

are

styles

has

available

two

typewritten

bus,

comes

A

single

Information

outputed, a

carrier,

by

the

system
data
to

be

spaces

which

is

to

form

the

operator.

available

include

lines.

printed,

to

be

of

The

be

moved

specifies

moved

an

88-character

and

single

circulating-type,

information.

from

line

line

either

of

typewritten

from

at a time,

the

the

print

wheel

through

an

data

ii-bit

the
lines

by

the

direction

by

the

these

too

reusable

live-memory,

This

information,

keyboard

information
keyboard
onto

the

(character),

printer

transmit

word

which

the

carrier

paper

feed

print

are

easily

fabric

or

magnetic

is

stored, a line

read/write

and

interface.

either

specifies

(in

multiples

and

number

(in

multiples

wheel.

These

interchangeable

and a single-use

MOS

buffers

in

the

form

tape

can

contain

(R/W)

paper

These

the

7-bit

the

of

of

vertical

of

print

which

of

an

storage

up

to 256
at a time,
magnetic

The

magnetic

20

inches

the

read
directionally
per

second.

the

system,

per

only

tape

transports

second

magnetic
reading
The

functions

are

controlled

and

bidirectionally

tape

at

20

1-4

are

transport

inches

of

each

by

the

capable

searching

(dual

per

second

magnetic

operator

of

unidirectionally

at

70

station

and

tape

from

system

bidirectionally

transport,

the

keyboard.

reading

inches

only)

like

and

per

second.

is

only

searching

any

other

writing

Naturally,

capable

at

70

functions

at

of

uni-

inches

2441-1

of

1.4 SPECIFICATIONS

The

specifications

listed

in

Table

for

1-1.

the

dual

station

Magnetic

Tape

Word

Processor

(MTWP)

are

Table

CHARACTERISTICS

MICROPROCESSOR:

Type

of

storage

Storage

Instruction
Memory

capacity

cycle

access

KEYBOARD:

Typewriter

Lighted

array

Function

Non-Lighted

Repeat

keys

1.1.

Dual

time

time

keys

Function

Station

keys

MTWP

Specifications

SPECIFICA

Read

Only

65,536

(4096

words)

2

J.1.s

1

J.1.s

maximum

44

keys

12

4

Hyphen,

index,
rier

reverse

return,

period.

TIONS

Memory

16-bit

backspace,

index,

space

(ROM)

instruction

forward

X,

car-

bar

and

2441-1

Maximum

PRINTER:

Number

Print

Print

Line

Print
Paper

input

of

characters

speed

line

length

spacing

quality

feed

rate

500

characters

88

>30

characters

(on

general

132

characters

(10-pitch)

12

per

inch

6

per

inch

per

inch
Standard
15-inch

per

text)

at

or

158

(12-pitch)

(single

(double

typewriter

platen

fed

second

per

second

10

per

characters

spaced)

spaced)

inch

or

1-5

at

3

Table

1-1.

Dual

Station

..

CHARACTERISTICS

Copy

capacity

MTWP

Specifications

(continued)

Original

SPECIFICA

plus·

TIONS

five

carbons

Ribbon

Print

MAGNETIC

Read/Write
Search
Start
Stop
Start
Stop

MAGNETIC

Type

Tape
Capacity

type

element

TAPE

TRANSPORTS:

speed

speed

time

time

distance

distance

CASSETTE:

Cartridge
fabric

loaded

or

single-use

Interchangeable

20

ips

(average)

70

ips

(average)

50 ±

10

ms @ 20

50 ±

10

ms @ 20

0.5

±

O.

I-inch @ 20

O.

5 ±

O.

I-inch @ 20

Modified
Computer
300,150

Philips

grade

and

75

(reusable

print

ips
ips

feet

carbon)

wheel

ips

ips

1-6

Storage

Maximum

capacity

search

time

ENVIRONMENTAL:

Temperature

Humidity

range

POWER:

Primary
DC

by

internal

supply

power

voltages

or

range

requirement

supplies)

rewind

(developed

50K, 25K,

acters

51,

26

and

8%

min.

imum

115
+24V ±

+15V
+5.12V

-5V

-9V

-15V

wet

VAC ±

2.

±

O.

±

±

O.

±

O.

±

O.

and

13

to

bulb

10%@

6V
75V

O.

25V
45V

75V

12K

seconds

80%

temp.

05V

char-

max.

15

(max-

80°F)

A

2441-1

Table

1-1.

Dual

Station

MTWP

Specifications

(continued)

CHARACTERISTICS

PHYSICAL:

Console
Typewriter

Console

Typewriter

Connecting

service

dimensions

Height

Width
Depth
Weight
Mounting

Height
Width
Depth
Weight

openings

service

dimensions

cables

openings

SPECIFICA

Both

side

Removable

panel

30.5

inches

12

inches

22

inches

<

140

lbs.

Leveler

8.45

inches

22.5

inches

19.63

< 50

2; AC

to

inches

lbs.

power

console

panels

cover

feet

TIONS

and

typewriter

and

access

2441-1

1-7

2.1

UNPACKING

The

Magnetic
prior
console)

to

shipment.

are
procedures
containers,

If

damage

units

from

any

return

Tape

separately

to

attain

examine

is

evident,

their

packaging.

shipment.

Word

Processor

Individual

packaged

optimum

each

for

contact

INSTALLATION

units

that

into two
system
broken

the

transportation

Original

CHAPTER 2

is

inspected

comprise

containers.

performance.

bands,

packaging

for

crushed

company
material

mechanical

part

of

Perform

Before

walls,

and

the

system

the

removing

or

other
involved
should

be

electrical

(the

following

units

signs

before

retained

operation

typewriter

unpacking

from

of

their

damage.

removing

to

facilitate

and

the

2.1.1 Unpacking

Use

the

following

Figure

2-1.

1.

2. Remove

3.

4.

5.

6.

7.

2.1.2

Use

Unpacking

the

following

the

Typewriter Unit

procedure

Position
stand

where

Remove
Remove
Remove

on

desk

or

Visually
physical

Retain

the

all

Console

procedure

to

the

packaged
it

is

the

tape

the

tape

the

plastic

the

typewriter

typing

examine

damage

packaging

Unit

to

remove

typewriter

to

be
securing
securing

sheet

stand.
the

surfaces

has

resulted.

materials

remove

the

used.

the
the

from

from

the

typewriter

unit

top

flaps

top

flaps

typewriter

the

inner

of

the

for

possible

console

unit

unit

from

on

the

floor

of

the

outer

of

the

inner

unit.

container

typewriter

future

from

its

near

container.
container.

and

unit

use.

its

container.

container.

the

desk

set

it

into

to

ensure

See

or

typing

position

that

no

See

Figure

2-2.

1.

Using a hand
or

typing

2. Remove

3.

Lift

4.

Break
console

5.

Slide

the

the

container

down

unit

the

console

pOSition.

2441-1

truck,

stand

two

one

is

where

bands

up

of

the

set.

unit

transport

it

will

wrapped

and

away

end

flaps

from

the

the

console

be

used.

around

from

the

on

the

telescoping

unit

to a location

the

container.

console

unit.

telescoping

tray

and

tray

set

near a desk

into

which

it

in

its

the

operating

2-1

2-2

PLASTIC

SH£E:T

/

Figure

2-1.

Typewriter

Unit Packaging

BANDS

CONTAINER

TELESCOPING
TRAY

Figure

2-2.

Console

Unit Packaging

2441-1

6.

Remove

the

protective

plastic

covering

that

surrounds

the

console

unit.

7. Unwind
S.

Examine
damage

9.

Retain

2.2 SYSTEM INTERCONNECTIONS

Use

the

following

and

2-4.

1.

Tilt

2.

Depress

the

the

has

all

packaging

procedure

the

typewriter

the

AC

power

surfaces

resulted.

to

connect

two

platen

writer.

3.

4.

5.

Raise

and
Raise

and

Pull
case

the

left-hand

TAB

CLEAR/SET

the

right-hand

10/12

forward

from

levers.

on

the

the

typewriter.

cord

of

the

materials

the

platen

release

lever

levers.

lever

two

upper

and

interconnection

console

for

two

system

cover

upward

levers

switch

bank

switch

case

unit

possible

components.

to

and

that

bank

that

release

to

ensure

future

expose
lift

the

supports

supports

levers

cable.

that

use.

the
platen

and

no

physical

See

Figures

platen.

from

the

the

MARG

the

remove

LEFT/RIGHT

SINGLE/DOUBLE

the

2-3

type-

upper

6.

7.

S.

9.

10.

11.

12.

13.

Remove
Lay

in

Locate

NOTE:

A7P1
A7P2
A7P3
A7P4

Place

the

removed
Examine

broken

Replace

place.

Lower
Lower

the

two

screws

the

typewriter-to-console

and

mate

the

four

Alternately,
A

7P1,

A 7P3

34-pin
56-pin
14-pin
14-pin

cable

in

the

connections,

the

both
the

step

interior

upper

lever

platen

clamp

6.
of

loose

cover

switch

cover.

that

secure

following

tighten

and A 7P4

back

into

the

typewriter

screws,

and

then

banks

the

cable

innerconnection

typewriter-to-console

both

screws

in

place.

Printer
Keyboard
Power
Lever

place

or

the

platen

into

place.

to

Interface

Interface

Connector

Switch

and

to

Interface

secure

ensure

debris

by

clamp

cable.

secure

Connector

Edge

using

there

located

snapping

to

lower

connectors.

Connector

Connector

the

are

in

the

them

case.

two

screws

no

loose

typewriter.

back

or

into

14.

Remove

lower

Lift

it

the

edge

up

2441-1

right-hand

of

the

and

away

panel

from

access

and

pulling

the

panel

frame.

from

it

away

the

from

console

the

by

frame

grasping

structure.

the

2-3

Typewriter

-----

Platten

Cover

Platten

Release

Levers

(2)

A7P2

Figure

2-3.

Typewriter

Cover

Removal

A7Pl

A7P3

2-4

Figure

2-4.

System

------

Interconnections

Cable Clamp

2441-1

15.

16.

17.

Examine

are

no

the

console.

Verify

that

seated

PWA in

Verify

the

loose

in

its

the

that

interior

or

broken

each

printed

respective

card

cage

the

following

of

the

console

connections,

wiring
socket

is

listed
internal

from

loose

assembly

of

the

card

in

Chapter 4 of

connections

this

side

screws,

(PWA)

cage.

are

is

this

to

ensure

or

debris

properly

The

location

manual.

secure:

that

there

located

located

of

each

in

and

Printer

Keyboard
R/W
Read/Write
RO
Read

NOTE:

18.

Examine

19.

Release

sensors

2.3 PREOPERATIONAL CHECKOUT

Once

the

be

checked

diagnostic

system

for

checkout.

components

proper

Interface

Interface

Tape

Control

(R/W

Tape

Control

Only (RO

Leave

to

each

the

the

facilitate

tape

door

to

with a lint-free

have

operation.

2.3.1 Power Supply Voltage Checkout

(PWA 1)

(PWA

(PWA 17)

J2)

(PWA 20)

J2)

right-hand

the

system

transport

each

tape

wiper

been

unpacked,

This

involves a power

3)
to

Tape

to

Tape

side

diagnostic

for

physical

transport

dampened

inspected,

access

and

with

panel

checkout.

damage.

wipe

90%

and

supply

off

off

the

heads

isopropyl

connected,

voltage

and

EOT

alcohol.

they

may

and a system

Use

the

voltages.

2441-1

following

See

Figure

1.

Remove

lower

Lift

2.

Lower

screws.

3.

Examine

loose

4.

Verify
circuit

5.

Connect

6.

Set

procedure

2-5.

the

edge

it

up

and

the

power

the

or

broken

that

breaker

the

CB1

to

ON.

to

initially

left-hand

of

the

panel

away

supply

interior

connections,

the

two

(CB1)

power

power

side

access

and

pulling

from

the

frame.

interconnect

of

the

console

15A

fuses

and

POWER

cord

to a 115 VAC, 60

up

loose
(F1

and

the

system

panel

it

away

panel

from

screws,

F2)

switch

from

from

by

this

are
are

Hz

or

to

the

console

the

loosening

side

or

debris

installed

set

to

power

verify

frame

to

ensure

in

and

the

source.

power

by

grasping

structure.

the

two

there

the

console.

both

OFF

supply

securing

are

the

main

pOSition.

the

no

2-5

DC Regulator

PWA

Use

care

An

AC

in

the

power

POWER

CAUTION

when

voltage

supply

pushbutton

probing

level

of

section

is

power

circuits.

115VAC

when

depressed

is

present

the

to

off.

TB2

W1

(Ground Bus)

Figure

7.

Depress
to

ON.

8.

Using a Weston
measure

respect

the

the

to

ground

minal.

9.

10.

Return
tighten

Replace
place

the
the

and

the

pushing

2-6

2-5.

POWER

Model

voltages

power
two

securing

left-hand

Power

switch,

4440

present

bus

(WI),

supply

side

the

lower

Supply

Interconnect

located

Digital

at

the

Table

interconnect

screws.

access

edge

panel

against

on

the

front

Multimeter

terminal

2-1

lists

panel

by

to

setting

the

Panel

panel

(DMM)

strips

voltages

its

upright

the

frame

structure.

of

or

(TB1

present

upper

the

console,

an

equivalent,

and

TB2)

at

position

edge

with

each

and

into

2441-1

ter-

Table

2-1.

Power

Supply

Voltages

Terminal

Terminal

1
2

)

3

4
5

}

6
7
8

2.3.2 System Diagnostic Checkout

Use

the

following

1.

Ensure

Strip

+24 ±

+15

-22.5 ± 2.5

-15 ± 0.75

-9

-5

procedure

that

TB1

Voltage

:!:

±0.45
±0.25

to

the

2.6

Vdc

0.75

Vdc

Vdc

Vdc

Vdc

verify

POWER

proper

switch

Terminal

system

is

set

Terminal

1
2

}

3

4

}

operation.

to

OFF.

Strip

TB2

Voltage

+5.12 ± 0.05

+11 ±

1.

Vdc

2 Vdc

2.

3.

4.

5.

6.

7.

8.

Install
Perform
When

remove
Replace

place
Wipe

90%
Position

Adjust

NOTE:

all

and

off

isopropyl

the

Programmed

each

routines

the

PDA.

the

right-hand

pushing

all

exterior

the

console

each

leveller

If

the

floor,

so

that a minimum
tween
rug

ventila

diagnostic

have

the

lower

covers

alcohol.

into

foot,

console

the

leveller

the

bottom

pile

in

order

tion.

Diagnostic

routine

been

performed

side

access
edge

using a lint

its

operating

as

required.

is

placed

feet

of

of

the

to

provide

Aid

(PDA)

outlined

panel

against

on a carpetted

must

1-inch

console

in

and

by

the

-free

position.

be

adjusted

exists

and

adequate

in

sockets

Chapter

the

system

setting

frame

wiper

be-

the

27

6.

operation

the

upper

structure.

dampened

and

edge

28.

verified,

into

with

2441-1

2-7

CHAPTER 3

OPERATION

3.1

KEYS, CONTROLS, INDICATORS AND ALARMS

Each

key

on

the

understanding

•

• Mode

•

•

In

each

classification, a key

illustration

The

controls

a

description

is

keyboard

as

to

Basic

Action
Encoded

provided

and

indicators

of

each

their

has

functions:

Operation

Keys

Keys

Function

is

for

each

located

system

been

Keys

Keys

first

group

alarm

classified

identified,

to

on

the

is

presented.

and

assist

Console

presented

and

then

in

the

are

as

its

function

location

then

identified

follows

is

of

each

to

provide a better

defined.

discussed

and

defined

An

key.

and

3.1.1

Those

they

Basic

keys,

control

typewriter

Operation

highlighted

the

basic

keyboard.

Keys

in

Figure

operations

All

are

3-1,

of

the

found on

are

classified
system.
both

the

as

Normally,

single

and

basic

each

dual

operation

is

found on a

station

keys

since

systems.

Sutal

.. ! 10

DCIUILE

IBBI

standard

..

Figure

Character
these
As

each
transferred
associated

space.

numeric

Set -There

are

capable

character

with

The

keys.

of

three

is

struck,

to

the

system.

that

code

underscore,

are

to
hyphen,

2441-1

3-1.

44

standard

functions:

the

8-bit

A

print

be

printed

period,

Basic

character

lower

ASCII

sequence

and

the

and X keys

Operation

keys

case,

code

will

upper
associated

be

carrier

Keys

located

case,

initiated

to

be

are

the

on

the

and

an

with

that

to

cause

advanced

only

repeatable

keyboard.

encoded

character
the

character

one

character

All

of

function.

will

alpha-

3-1

be

Space
to

Bar

right

seconds,

Bar

remains

- The Space

one

character

the

carrier
depressed

Bar,

space

will

or

when
for

each

continue

until

the

depressed,

depression.

to

move

from

right-hand

will

left

stop

cause

If

held

to

is

reached.

the

for

right

carrier

greater

for

so

to

than

long

move

500

as

the

from

milli-

Space

left

Shift - The

shift

of

case

8-bit

left-

the

keyboard

ASCII

or

right-hand

(no

code

associated

Shift Lock - The Shift Lock
position.

Carrier
move
vertical

Lever.

vertical

When
carrier
referenced

The

lock

Return-

to

the

left-hand

index

If

held

indexing

depressed

return"

in

paragraph

will

be

The

Carrier
margin

operations

for

greater

for

as

together

will

be

encoded

tion.

TAB

CLEAR/SET

The

lever,
carrier
hand

margin

left-hand

when

to

be

margin

pOSition.

Lever -This

placed

stored

or

to

by the

There

the

printer

key

mechanically

released

and

specified

than

long

as

with

3.2

of

down

(SE

system.

must

left

Shift

key,

movement).

with

each

when the Shift

Return

the

key,

paper

by the

500

milliseconds,

the

Carrier

the

CODE key

onto

the

this

manual

lever

T)

is

will

A

be

at

of

the

right-hand

when

setting

tape.

used

cause

tab

least

held

As

each

struck

locks

only

key

when

depressed,

feed

to

of

Return

during

Refer

for

details

to

electronically

the

cannot

one

margin.

depressed,

character

character

the

left-hand

is

depressed.

execute

the

SINGLE/DOUBLE Line Space

the

paper

key

remains

the

Record

to

the

on

code

for

be

set

directly

character

will

is

transferred

will

the

number

feed

mode, a "required

Operating

the

use

set

the

present

space

cause

is

struck,

Shift

key

cause

the
of

will

continue

depressed.

Insutructions

of

this

encoded

or

clear

position

at

the

left-

to

the

an

electronic

the

upper

to

the

in the

upper

carrier

forward

forward

tab

locations.

of

or

right-

right

of

system.

ca

to

func-

the

the

se

POSitioning

stored

will

be

The

lever,
carrier
be

set

the

location.

cleared.

when

pOSition

for

playback.

NOTE:

carrier

When

This

placed

to

Tab -Depression

tion

to

the

first

set

position;
When

will

graph

depressed

be

encoded

3.2

of

onto

this

together

manual

MARGLEFT/RIGHT
hand

sent

margin

position

pOSition. The

of

the

to a

tab

placed

may

be done

down (SET)

be

encoded

Since
tronic
ical
be

cleared

cept

of

the

Tab

tab

location

with

the

tape

for

Lever -This

lever

carrier

to

location

up (CLEAR)

at

during

onto

the

the

storing

function

tabs),

all
when

for

those

key

will

provided

the

CODE

..

Refer

details

to

on

lever

when

be

stored

and

together

any

carrier

the

tape.

of tab

(there

tab

locations

the

encoded

cause

that

key,

the

the

use

is

placed

by

the

placing

the

with

position.

Record

In

this

locations

are

noac'tual

power

is

onto

the

carrier

the

carrier

during

Operating

of

this

used

to

electronically

up

(LEFT)

system.

lever

the

CODE

mo:.e,

way,

tab

is

will

an

mechan-

will

automatically

turned

tape.

to

move

is

not

the

Record
Instructions
encoded

will

With

up

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3-4

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2441-1