Dura_1021_Computer_Terminal_Users_Manual Dura 1021 Computer Terminal Users Manual

DURA

1021

Computer Terminal User's Manual

Contents

INTRODUCTION

1

See-Through

Card

Holder

7

OPERATING

PROCEDURES

2

Margin

Stops

7

KEYBOARD

LAYOUTS

3

Typing

Position

Indicator

7

CODE

CHARTS

4

KEYBOARD

CONTROLS

8

OPERATING

CONTROLS

5

Power

On/Off

Switch

and

Indicator

8

Carrier

Return

5

Index

Key

8

Interrupt

5

Carrier

Return

8

Shift

5

Tab

Control

8

NP/NE

(Non

Print/Non

Escape)

5

Shift

and

Shift

Lock

8

Ribbon

Shift

5

Multiple

Character

Keys

8

Reverse

Index

5

Backspace

8

First

Line.

6

Margin

Release

8

Check

Function

6 CHANGING

TYPE

STYLE

9

Timing

6

Front

Cover

Plate

9

Data

Flow

Chart

6 CHANGING

RIBBON

CARTRIDGE

10

TYPEWRITER

OPERATION

7

Ribbon

Controls

10

PAPER

CARRIER

CONTROLS

7 CHANGING

FILM

RIBBON

11

Paper

Bail

7

CARE

AND

CLEANING

12

Platen

Variable

7

Platen

12

Paper

Guide

7

Deflector

Plate

12

Multiple

Copy

Impression

Control

7

Erasure

Dustpan

12

Vertical

Spacing

Control

7

Typing

Element

12

Paper

Release

Lever

7

Index

13

DURA

is

a trademark

of

DURA,. Division Intercontinental Systems, Inc.

1021

Computer Terminal

This manual describes the operation and features of

the Model 1021 Computer Terminal and

is

intended

for the user who will be operating it in conjunction with

a computer or with other terminals.

For

a more detailed

discussion of its coding -EBCD (Correspondence Se-

lectric sphere) transmission code or EBCD (BCD sphere)

transmission

code-computer

programming, and acous-

tical couplers, see the

DURA

Model 1021 Training

Manual.

The DURA® Model 1021 Computer Terminal com-

bines the reliability and compactness of integrated cir-

cuitry with the proven excellence of the high-speed

Selectric printer. Versatility is indicated by the following

features and the optional equipment that

is

available.

• Compatible with the IBM

2740/41

series conver-

sational terminals so that IBM software can be

used.

• Suitcase-sized

so

that you can move it from one

location to another, thereby eliminating the in-

stallation time loss and costs involved in per-

manent facilities.

• Can be used to communicate directly with any

other 1021 Computer Terminal.

• Interfaces with

DURA

Models

260

and

300

Acoustic

Data

Couplers, Model 103

(A/F)

Data

Phone,

or

any other acoustical coupler meeting

Electronic Industry Association (EIA) standards.

• Prints in upper and lower case

at

a rate of 175

words per minute. Capable of receiving 15 char-

acters per second asynchronously.

•

NON

PRINT/NON

ESCAPE feature to provide

security of confidential information.

Available with:

• Automatic RIBBON

SHIFT

for 2-color printout.

• Either REVERSE

INDEX

for sub and superscripts

in mathematical and chemical equations and form-

ulae

or

...

•

FIRST

LINE

feature for automatic vertical tabu-

lation.

1

Operating Procedures

Most systems follow a sequence of operations similar

to the following:

2

1.

Depress power

ON/OFF

switch to the

ON

posi-

tion.

In

this position, the Model 1021 can be used

as

a conventional Selectric typewriter. A light in

the

DURA

nameplate on the front panel of the

case will glow.

2.

Depress

LINE

ON/OFF

switch to ON.

In

this

position, the Model 1021 can be used to transmit

to

or

receive from the computer

or

other terminals.

3.

To

make contact with the remote computer:

a.

When using the

DURA

260

or

300 Acoustic

Data

Coupler,

or

any other unit meeting

EIA

standards, remove the telephone handset and

dial the number of the computer.

As soon as you have a steady, high-pitched,

continuous tone in the handset, place the hand-

set into the acoustical coupler's receptacle. The

yellow Ready light will glow, indicating that

the terminal

is

On Line with the computer.

b. When using the Model 103

(A/F)

Data

Phone,

remove the handset and depress the "Talk"

key. Dial the number of the computer. When

you hear a steady, high-pitched, continuous

tone, depress the

DATA

key. The Ready light

will glow, indicating that the terminal is

On

Line with the computer. The Transmit light will

also

be

on.

The

telephone handset now can be

put

in the cradle.

4. To determine if the computer

is

ready to receive,

depress the Carrier Return (CR)

or

the Interrupt

(INTER) key. Either key sends an

"End

of Trans-

mission" (EOT) code to the computer.

5.

The

computer will respond with either a message

or

an underscore. When the Transmit light goes

on, depress

NP

/NE

and type in the identification

code. (Depress

NP

/NE

or

RESET

to take you

out of that mode.)

6.

Now begin your application.

7.

Carrier return to give EOTsignal.

8. After

EOT

signal, Transmit light goes out and

keyboard locks.

9. Computer now sends an

"End

of Address" (EOA)

to

put

the 1021 in receive mode and gives you an

answer to your input.

10. When finished, computer causes an automatic

carrier return, giving

EOT

signal.

Now repeat from step

6.

Whenever the Transmit light goes on and the key-

board unlocks, you are in control and can transmit.

Conversely, the computer is in control when the Trans-

mit light is off and the keyboard

is

locked.

NOTE: To communicate between two remote com-

patible terminals with

DURA,

Acoustic

Couplers, use either a

DURA

300 at one

end and a

DURA

260 at the other end, or

use

DURA

300 Acoustic Couplers

at

both

ends with one serving

as

a "master" and the

other

as

a "slave."

1021

-"SELECTRIC "KEYBOARD LAYOUT

Ready Transmit

Ught

light

(yellow) (green)

~

0

ITflII]

CJ

[I]

[J]

OJ

CJ

OJ

D

CJ

rn

~,o

0

N'M

DO

".

[QJ00000000[gCJD

ElD

+

1,-------,10

0 0 0 0 0

~

D D

CJ

1'---------11

OFF B B

Optional

1.

Reverse Index Key

2.

First Line Key

3,

Ribbon Shift Key

1021-

BCD

KEYBOARD LAYOUT

Ready Transmit

Ught Light

liB

0

CJ

IT]

D

[J

[I]

[J

IT]

[J

OJ

[J

rn

~,'"o

O'N.,"'

DO

".

[QJ00000000[gCJCJ

ElD

Optional

1.

Reverse Index Key

2. First Line Key

3. Ribbon Shift Key

3

1021/

CORRESPONDENCE

KEYBOARD

1021/BCD

KEYBOARD

E

BCD

SELECTRIC

KEYBOARD

CHARACTER

POSITION

1 2 3 • 4 5 6 7 8 Lower Upper

E

BCD

KEYBOARD

CHARACTER

POSITION

1 2 3 • 4 5 6 7 8 Lower

UDDer

1 • 1 + 0 1 • 1 = 0

2 • 2 @ 3 2 · 2 < 3

1 2 • C 3 # 7 1 2 · C 3 7

• 8 4 $

11

4 • 4 :

11

4 • 5 % 15 1 4 • C 5 %

15

2 4 • C 6 ¢

19

2 4 • C 6 ,

19

1 4 • C 7 & 23 1 2 4 • 7 >

23

1 2 4 • 8 . 27 ·

8 8 . 27

1 2 • 8 9 (EOA)(

31

1 • 8 C 9 (

31

1 • 8 C 0 )

35

2 • 8 C 0 )

35

1 2 4 • C B a A 2

I'

• A B a A 2

1 2 ·

8 C A b B

20

2 · A B b B

20

1 2 4 • C A c C

12

1 2 • C A B c C

12

1 4 • A d 0 10 4 • A B d 0

10

4 • C A e E 9 1 4 • C A B e E 9

1 2 • C A B I F

14

2 4 • C A B I F

14

1 • A B a G 18 1 2 4 · A B 9 G

18

1 • 8 A h H

22

·

8 A

'B

h H

22

2 4 · B i 1 29 1 • 8 C A B i 1

29

• C A B J 26 1 C B i J 26

2 4 • A k K

30

2 • C B k K

30

• 8 C A I L

34

1 2 • B I L

34

1 • C B m M

28

4 • C B m M

28

2 • C A n N 24 1 4 • B n N

24

• 8 C B 0 0

33

2 4 • B 0 0

33

4 • A B 0 P

37

1 2 4 • C B 0 P

37

2 4 • C A B n Q 1 ·

8 C B 0 Q 1

1 4 • B r R 13 1 • 8 B r R

13

1 ·

8 B 5 S 6 2 • C A 5 S 6

· A I T 17 1 2 • A I T 17

1 2 · A u U 25 4 • C A u U

25

1 2 • B v V

16

1 4 • A v V

16

1 2 • 8 C B w W 5 2 4 • A w W 5

1 · C A x X 8 1 2 4 · C A x X 8

1 • 8 C A B v Y

21

• 8 C A Y

21

2 • 8 C • Z 4

4 • C B ,

42

1 • 8 A . Z 4

1 2 • 8

DrEaA)

"

42

1 2 4 • A B

32

1 2 ·

8 C A I

32

I 4 • C A B ; :

38

1 2 • 8 C B $ I

38

2 • C B

36

1 2 • 8 A B

..,

36

· R A B I ? 40 1 • C A / ? 40

• B ! 0

41

• A

(ciJ

,

41

1 2 • 8 A B -

39

• B -

39

2 • " B = + 43 • C A B & +

43

• C

S~ce

G • C Snace G

2 4 ·

8 C B

Bock

SQace

0 2 4 • 8 C 8

Bock

Space

0

2 4 • 8 Unner Shift B 2 4 • 8

UDDer

Shifl B

2 4 • 8 A B

Lower

Shift C 2 4 • 8 A B

Lower

Shift C

1 4 • 8 A B

Tab

A

1 4 ·

8 C B

CRILF

F

1 4 • 8 A B

Tab

A

1 4 • 8 C B CRiLF F

1 4 • 8 C A

Index

E 1 4 • 8 C A

Index

E

4 • 8 B

Rev.

Ind. 4 • 8 B Rev. Ind.

4 • 8 C A B NP/NE On

4 •

8·

A NP/NE

Off

4

.1

R C A B NP/NE On

4 • 8 A

NPiNE

Off

4 • 8 C Rib. SIt. 4 • 8 C Rib. Sit.

1 4 • 8

First

line

1 4 • 8

First

line

1 2 4 • 8 C

EOT

1 2 4 • 8 C eaT

1 2 4 • 8 B Idle 1 2 4 • 8 B Idle

1 2 4 • 8 C A B Delete 1 2 4 ·

8 C A B Delete

2 4 • 8 C A EOB 2 4 • 8 C A

EOB

1 2 4 · 8 C A B

Sphere

12pt-007

1 2 4 ·

8 C A B

Sphere

963

lOpt-008

4

Operating Controls

CARRIER RETURN (CR)

As a typewriter key, depressing the carrier return

key will cause the paper to advance vertically one

or

more lines and return to the left margin. However,

when On Line with the computer, the carrier return

key also serves to return control to the computer.

MODE

OFF

LINE

ON

LINE

CARRIER

RETURN FUNCTION

Return carrier

Return carrier, transmit

CR

code

and EOT code. Lock keyboard,

turn Transmit light off.

INTERRUPT (INTER)

This key has two functions:

1.

In the transmit mode, it ends transmit conditions

by

sending an

EOT

code, turning off the Trans-

mit light, and locking the keyboard.

2.

In

the receive mode, it sends an interrupt signal

(200-millisecond spacing signal used by the IBM

2741) to the remote computer. This signal alerts

the computer. The computer in turn can put the

terminal in a transmit status or can continue send-

ing data. In the latter case, the printer continues

to function and all data

is

received and printed

out.

SHIFT

The Shift key on the Model 1021 Computer Terminal

functions as a conventional typewriter shift key. The

user can leave the printer in either upper or lower case

when returning control

io

the remote computer. Like-

wise the printer may be in upper or lower case when

the computer returns control to the terminal.

NP/NE

(Non Print/Non Escape)

This standard feature enables the user to maintain

security on information such

as

identification code, job

code, and account numbers which might make it pos-

sible for others to query the computer for confidential

data.

In

the ON position (indicated by a yellow light),

the printing of any of the 44 characters (A, B, C, etc.)

transmitted

is

inhibited. Operation of the control keys

(shift, TAB, etc.)

is

not affected. Depression of the

NP

/NE

key affects the printers in the local terminal, all

remote terminals, and in the originating terminal. To

take the equipment out of the

NP

/NE

mode, depress

the

NP

/NE

key again.

RIBBON SHIFT

This optional feature

is

available for two modes of

operation. In one mode, the color of the printout

is

controlled by the user. In the other mode, the ribbon

is

shifted automatically to print all received data in red.

When the key

is

depressed in the first mode, a code

is

transmitted that alternately causes the Ribbon Shift to

pick and drop. This code may be received

as

well

as

transmitted. No code

is

necessary for the second mode

of operation.

REVERSE INDEX

This optional feature

is

desirable for sending or re-

ceiving chemical formulae, charts, graphs, or mathe-

matical operations. The REVERSE INDEX function,

whether operated

by

depressing a key on the keyboard,

or by a code from the line, always causes the platen to

move

lh

vertical space upward so that a superscript can

be printed. The Vertical Spacing Control lever must be

adjusted to half-space position to provide spacing, via

the Index key, of

lh

space to return the platen to the

typing line. The Index key can also be used for the

insertion of subscripts. The Index and the Reverse In-

dex each require "two character times" to be com-

pleted.

5

FIRST LINE (Vertical Tabulation)

This optional feature

is

desirable when working with

continuous forms, such

as

with a forms tractor. The

function of this key

is

to provide automatic indexing of

the paper in the printer until pre-set stops are reached.

A cam-operated switch in the forms tractor senses that

the appropriate. stop has been reached and stops the

indexing at the "First Line" position. The time re-

quired to complete the indexing operation

is

determined

by

the number of indexes required; each index takes

two character times. The First Line code can be gener-

ated by the key or received On Line. After receiving

First Line code, indexing occurs, and upon completion

the terminal will transmit an

EaT

code.

CHECK FUNCTION

When the terminal

is

in the

reCeIVIng

mode, the

check light will

go

on if a received code

is

a parity

error, or if the printer

is

unable to keep up with or

follow the incoming data. Any character that

is

a parity

error prints out

as

a period, and the check light glows.

The terminal will automatically transmit an interrupt

signal back to the computer (which causes it to stop

sending), and the keyboard remains locked. On special

order, the 1021 terminal can be wired

so

that the

SERIALIZER

RECEIVE

CLOCK

CONTROL

r4

.-

KEYBOARD

PRINTER

~

SWITCHES

..

INTERLOCK

r

RECEIVE

4

SHIFT

REG.

...

PRINTER

...

&

OUTPUT

REGISTER

GATES

..

...

terminal does not send an interrupt signal. When the

terminal

is

in the transmitting mode, the check light

will go on if an interrupt signal (200-millisecond spac-

ing)

is

received. In the transmitting mode, the user can

return control to the remote system by depressing the

reset, then either the Carrier Return or the Interrupt

key. The user must not turn off the check light by de-

pressing the Reset key unless the transmit light is on.

TIMING CONSIDERATIONS

In

the software, time must be allowed for the me-

chanical

fun~tions

of the printer to be completed before

additional character information

is

transmitted. The

amount of time, expressed in terms of "character times,"

is

given by the following formulae:

CARRIER

RETURN

TAB

INDEX/REVERSE

INDEX

(1

each)

FIRST

LINE

(each Index)

RIBBON SHIFT

N=T+1.5

N=2

N=l

where N = number of character times required, and

T = number of inches of carrier travel. Answers should

be rounded off to the next highest whole number.

TRANSMIT TRANSMIT

SHIFT

REG.

I ....

CONTROL

....

~

INPUT

GATES

GATING

PRINT

DECODE

&

..

MAGNETS

PRINT

OPERATION

f-<

OPERATION

F

~

&

CONTROL

,-.

DECODE

STROBE

&

r+

MAGNETS

I----

PRINT

OPTIONAL

..

FEATURES

EOA

..

&

EOT

CONTROL

Data

flow

for

MODEL

1021

Computer Terminal

6

Typewriter Operation

PAPER

CARRIER

CONTROLS

Paper Bail

Move

forward when inserting paper. Release

it

to hold

the paper against the platen.

Platen Variable

Push in on the left platen knob and the platen can

be

rotated freely in either direction to adjust the printing line.

This

is

particularly useful when a typed

page

is

being rein-

serted for additions or corrections.

Paper Guide

Position by sliding it to the left or right.

When

insert-

ing a new sheet

of

paper, place the left

edge

of

the

paper against the paper guide and turn the platen knob

to feed in the paper. This procedure will ensure uniform

left margins.

Multiple

Copy Impression Control Lever

Move

the lever toward the rear to compensate for multi-

ple carbon copies or heavy paper. This ensures that the typ-

ing element

will

continue to strike the paper squarely. There

are

five

lever positions. Typical settings are the second posi-

tion for an original and three carbon copies and the third

LEFT

PLATEN

VARIABLE

LEFT

MARGIN-----

STOP

TYPING

POSITION

INDICATOR

MARGIN

SCALE

position for

an

original and

five

or more carbon copies.

Vertical Spacing Control Lever

Permits you to select either

single

or double spacing

of

the platen.

Paper Release Lever

Move

forward when removing or adjusting paper.

See-Through Card Holder

The clear plastic holder permits you to

see

as

you type.

It

also

holds

small

documents, such

as

cards and envelopes,

firmly against the platen. The

single

vertical line at the top

indicates the position

of

the line

of

printing, and its

associ-

ated scale

is

especially useful when you

are

aligning a

printed form or reinserting a

page.

Margin Stops

Push in and slide along margin

scale

until the mark on

the stop

is

aligned with the desired gradation on the

scale.

Typing Position Indicator

A red arrow indicates the exact printing position

of

the

carrier.

7

Typical keyboard for the Model

1021

series. Numerical keys and symbols may vary, depending on the

particular model and the typing element selected.

KEYBOARD

CONTROLS

Power

On/Off

Switch

and

Indicator

This switch supplies power to the DURA 1021

Com-

puter

Terminal.

When the switch

is

in the on position,

the red indicator light in the center

of

the Dura

"d"

name-

plate glows.

Index Key

The Index key

is

a two-level key used to advance the

paper vertically without carrier movement. Depress lightly

for single action; hold at second level for continuous verti-

cal paper movement.

Carrier Return Key

To return the carrier to the left margin stop and advance

the paper vertically, depress the Carrier Return key.

Tab Control (+,

-)

To set a tab stop, move the carrier to the desired posi-

tion and depress the set (+) end

of

the

TAB

control. To

clear a tab stop, tab

to

the stop to be cleared and depress

the clear

(-)

end

of

the

TAB

control.. To clear

all

stops,

move the carrier to the extreme right, depress and hold

down the clear (

-)

end

of

the

TAB

control, and depress the

carrier return key.

8

Tab Key

To move the carrier to

all

previously set tab stops, or

through the right margin, depress the

TAB

key.

Shift

Key

To shift the printing sphere from lower

case

to upper

case position, or vice versa, depress either the right or the

left Shift key.

Shift Lock Key

Depress the Shift Lock key

to

hold the printing sphere

in upper case position.

Multiple Character

Keys

There are two Multiple Character keys (scribed with two

sets

of

characters). The set

of

characters present is depend-

ent on the typing element.

When

changing the element,

check to

see

which sets

of

characters apply.

Backspace Key

To move the carrier to the left one space

at

a time,

depress the Backspace key.

Margin

Release

Key

To permit the carrier to move beyond the left or right

margin stops, depress the Margin Release key.

CHANGING

THE

TYPE

STYLE

The DURA

1021

typing element can

be

replaced readily,

permitting various type faces to

be

used.

On

the top

of

each typing element are shown the type

face, typewriter pitch number (10 characters per inch or 12

characters per inch), and an orientation arrow.

SPRING

LEVERS

Removing the Typing Element

1.

Turn

off

keyboard power.

2.

Make

sure the typing element

is

positioned in lower

case

with the arrow pointing toward the piaten.

3. With spring·type element, squeeze the spring levers

together and lift upward to release the typing ele·

ment from the groove in the element post.

4. With lever-type element, raise element release lever

until it clicks into position, and

use

lever to lift

ele-

ment off

of

the post.

Installing the Typing Element

1.

Make

sure the system

is

in lower case.

2.

Place the element on the element post with the arrow

on top pointing toward the platen.

3. To install the spring-type element, squeeze the spring

levers together and gently press down until the

ele-

ment snaps into place.

4. To install a lever-type element, raise the release lever

until it clicks, slip element into position on the post,

and close the

lever~

Front Cover Plate

To remove, grasp front

of

cover plate and lift up

smartly.

To reinstall, slip prongs (on top rear edge

of

cover)

under the

top

casing, then push down until cover locks into

place.

9

CHANGING THE RIBBON CARTRIDGE

Changing the ribbon cartridge on your DURA 1021

is

quick, clean, and simple. The modern cartridge design

ID!lkes

it unnecessary ever to touch the ribbon.

Removing Ribbon

1.

Move

the carrier

to

the center.

2.

Turn

off

keyboard power.

Installing Ribbon

RIBBON

POSITION

LEVER

1.

Hold the ribbon cartridge

so

that the exposed length

of

ribbon

faces

the platen.

2.

Slide the ribbon down through the ribbon guide slots

with the exposed ribbon between the card holder and

typing element.

RIBBON CONTROLS

3. Remove front cover plate.

4. Raise ribbon guide by shifting the ribbon change

lever

to

the right.

s.

Lift ribbon cartridge straight up

off

of

the ribbon

posts.

6.

Ease

ribbon through the ribbon guide slots.

7. Discard used cartridge.

RIBBON

REVERSE

LEVERS

RIBBON

CHANGE

LEVER

3. Place the cartridge on the spindle and press down

firmly until it clicks into position.

4.

To

take up ribbon slack, turn either cartridge post in

the direction

of

the arrow.

S.

Lower the ribbon guide into typing position by

mov-

ing the ribbon position lever

to

the left.

The ribbon position lever has four settings. Position one

(extreme right)

is

for cutting stencils, and positions two,

three, and four cause the top, center, and bottom portions

of

the ribbon to be used.

10

For longer fabric ribbon life change the setting

of

the

ribbon position lever frequently to allow the ribbon to

re-

ink itself.

Although ribbon travel

is

reversed automatically when

the ribbon has completely unwound, it may be reversed

manually by moving the ribbon reverse lever to the oppo-

site position.

CHANGING

FILM

RIBBON

When

you

see

the cross-hatching on the ribbon trailer, it

is time

to

replace the ribbon. To change the ribbon, first

center the carrier and then turn

off

keyboard power. Care-

fully remove the top cover. Keep the paper bail against the

platen. Then follow these steps:

Removing Used Ribbon

1.

Press

LOAD

lever to raise ribbon lifts.

2.

Remove the ribbon from both ribbon lifts.

3.

While

turning the left (empty) core clockwise, gently

lift it from spindle.

4. Turn the right (plastic) spool clockwise· and lift it

from spindle.

S.

Discard the used ribbon, the empty core, and the

plastic spool.

Installing

New

Ribbon

1. Before threading, carefully separate the empty clear

plastic spool from the ribbon.

2.

Push the ribbon LOAD lever toward the platen (it

will lock into position) to lift the ribbon guides.

3. Drop the ribbon with the gray center core onto the

left spindle and guide the ribbon, using the clear

plastic spool (with printing on top), to the left

of

the tension wire.

4. Continue holding the clear plastic spool and thread

ribbon through the left and right ribbon guides.

5. Guide the ribbon

to

the left and past the carrier

position post.

6. Continue around

to

the right

of

the ribbon guide

post.

7. Thread the ribbon carefully between the ribbon

feed rollers.

8. Place the clear plastic spool on the right spindle and

turn in a clockwise direction until it clicks into posi-

tion.

9. Take up slack

by

turning the ribbon roll on the left

spindle clockwise.

10. Press against the CLOSE portion

of

the ribbon

LOAD

lever.

11. The illustration shows the way the film ribbon will

look when

it

is

correctly inserted and ready for use.

(The arrows indicate the direction in which the rib-

bon moves.)

11

CARE AND CLEANING OF YOUR DURA 1021 TYPEWRITER

A few simple steps will preserve the appearance

of

your

DURA 1021

Computer

Terminal

and will help keep it

operating

at

top efficiency.

To remove grease or ink stains from the case, use a mild

soap or liquid detergent, then wipe with a clean damp

sponge or cloth. Tape chad or dust may be removed

by

gentle brushing.

Removing

the

Platen

1. Turn

off

keyboard power.

2. Bring forward the paper release lever and the paper

bail.

3. Remove

top

cover.

4. Depress the platen release levers and lift

out

platen.

Replacing

the

Platen

12

1. Position

it

with the ratchet

teeth

to

your

right.

2. Place groove

of

platen in

the

platen latch.

3. Press down on

both

ends

of

the

platen until

it

snaps

into place.

Never use oil or cleaning fluids (except platen cleaner)

on your machine. Proper paper feed will be assured and

roller marks will be prevented

by

periodic cleaning

of

the

platen and feed rollers with platen cleaner available from

office supply dealers. This

is

done most easily

if

the platen

and feed rollers are first removed.

Replacing

the

Deflector

Plate

If

the deflector plate has been removed or jostled

out

of

place, make sure that:

1. Feed rollers are in place on the feed roller hangers,

with larger rollers in the rear.

2. Power is

off

and the paper release lever

is

forward.

3. The deflector plate

is

lowered in place with the

toothed edge toward you and the two tines on either

end straddling the grooves in the deflector shaft.

Cleaning

the

Erasure

Dustpan

1. With keyboard power on, move typing element

to

one end.

2. Turn

off

power and remove cover.

3. With the dual-purpose brush, sweep lightly toward

the front

of

the typewriter.

CAUTION: Do not allow your brush

to

interfere with the

thin wires.

Cleaning

the

Typing

Element

Clip the typing element

to

the eraser end

of

a pencil.

With the typing element brush, brush away from you and

toward the

top

of

the element.

Index

Card

Holder

7

NP/NE

(Non

Print/Non

Escape)

5

Care

and

Cleaning

12

Carrier

Return

8

Operating

Controls

5

Changing

Type

Style

9

Operating

Procedures

2

Check

Function

6

Code

Charts

4

Paper

Bail

7

Paper

Carrier

Controls

7

Data

Flow

Chart

6

Paper

Guide 7

Paper

Release

Lever

7

Deflector

Plate

12

Platen

7

Platen

-

Cleaning

12

Erasure

Dustpan

12

Platen

Variable

7

Power

Switch

8

Film

Ribbon

11

First

Line

6

Shift

5

Front

Cover

Plate

9

Shift

Keys

and

Lock

8

Reverse

Index

5

Index

Key

8

Ribbon

Cartridge

10

Interrupt

5

Ribbon

Controls

10

Ribbon

Shift

5

Keyboard

Controls

8

Keyboard

Layouts

3

Timing

6

Type

Style

9

Margin

Release

8

Typing

Element

9

Margin

Stops

7

Typing

Position

Indicator

7

Mul

tiple

Character

Keys

8

Typewriter

Operation

7

13

Printed

in U.S.A.

'"

Intercontinental

Systems Inc.

~I'II'I'II!!~

DURA DIVISION

MS·69278

Dura_1021_Computer_Terminal_Users_Manual Dura 1021 Computer Terminal Users Manual

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