DF450 Tel/Fax User Giude Fax

User Manual: DF450

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DF450 plain paper
fax machine
User guide

At a glance

Top view
Automatic sheet
feeder. Holds up to 70
A4 sheets of plain paper
for copies and incoming
faxes.

❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍

Automatic document
feeder. Holds up to 10
sheets to be faxed or
copied.

A4 I

LCD display. Shows
dialled numbers, time
and date and function
information.

Printer cover. Open to
install the print cartridge.

DF 450
AB

2

GH

3

JKL

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PR

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WX
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STD FINE HALF TONE

1

2

3

4

MN
RX MODE

O

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1
I

Keypad. Press to dial fax
or phone numbers and to
input names and numbers
into the memory.

FUNCTION

CLEAR

RESOL. CONTRAST

§

©

-

+
5

6

7

8

9

10

QUICKDIAL LAST TX EXTERNAL HOLD

REDIAL

PAUSE

2. TONE

QZ

Monitor button. Use for
making telephone calls
when you have a
telephone connected.

✱
P - TB

One touch memory
buttons. Use to dial your
most frequently used
numbers with one touch.

9
A-a

Control panel. Use to
access the features of the
DF450. Seven buttons
have dual functions.

Adjustable paper
guide. Place documents
face down to ensure
straight feeding into the
machine for fax
transmission.

0
SYMBOLS

MONITOR

START

STOP

ERROR

Error indication light.
Comes on when there is a
fault in fax transmission
or reception.
Sent document tray.
Holds the original copies
of documents that have
been faxed or copied.
Received document
tray (beneath sent
document tray). Holds
received faxes and copies
of documents.

Please open this page for a further ‘at a glance’
guide to your DF450 plain paper fax machine.
1

At a glance

Top view with the printer cover and control panel open.

❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍

BT telephone line
cord socket.

Print head with
interchangeable ink
cartridge.

Black paper feed
roller.

White paper feed
roller.
Green release lever
for paper feed roller.
Optical scanner
(beneath white paper
roller).

Control panel
RX MODE

FUNCTION

CLEAR

RESOL. CONTRAST

§

©

-

+

QUICKDIAL LAST TX EXTERNAL HOLD

A-a

REDIAL

MONITOR

START

FUNCTION Press to access the various menus.
CLEAR

Deletes incorrect entries.

RX MODE Changes document reception settings.
§

Scrolls through settings available
under the function button.

RESOL

Selects the resolution for scanning
documents to be sent or copied.

©

2. TONE

STOP

REDIAL

Scrolls through settings available
under the function button.

Increases the speaker volume (after
pressing the MONITOR button)

QUICKDIAL Sets the machine for you to dial out
numbers stored under the Quickdial
function.
A-a

Selects capital or lower case letters
when storing names in the memory.

LAST TX

Prints a status report on last fax sent.

Redials the last number.

EXTERNAL (If connected to a switchboard): can be
programmed to give you an outside
line, ready to dial.
PAUSE

Inserts a pause in a number.

HOLD

Puts a telephone call on hold.

2. TONE

Use this key to detect secondary dial
tone on certain PBXs. When this
function is activated, a colon will
appear in the display.

Decreases the speaker volume (after
pressing the MONITOR button)

CONTRAST Selects the contrast for scanning
documents to be sent or copied.

+

PAUSE

MONITOR Allows you to dial a telephone number
without lifting the handset. You can
hear the line tone and dialling tone
through the internal loudspeaker.
A telephone will need to be connected
for you to be able to hold a
conversation.
START

Use to send or copy a document.
Confirms the choices and selections
you make on the FUNCTION button.

STOP

Stops any current operation; resets the
machine if there is an operating error.

In this guide

In this guide
At a glance

1

Introduction to your DF450

3

Setting up

4

Using your DF450

14

Additional features

25

Maintenance

34

Help

36

Technical specifications

46

Technical information

47

Index

49

Hints and tips boxes

In this user guide, we’ve included helpful tips and
useful notes. They are shown in a grey box.

2

Introduction

Introduction Your DF450 fax machine is designed
for ease of use and made to the high standards set by BT.
We thank you for making the right choice and
expect that the machine will give you many
years of quality service.
Please read the instructions carefully before
use, and retain this User Guide for future
reference.

For your records
Date of purchase:
Place of purchase:
Serial number (on base of facsimile):
Purchase price:
(For warranty purposes, proof of purchase is
required, so please keep your receipt. See also
page 38.)

3

Customer Helpline

If you have problems with your
machine, call the DF450 Helpline Service,
Freefone 0800 215 200.

Setting up

Setting up Follow these steps to get your DF450 ready.
Electrical storm warning

Note 1.
Please note that during periods of electrical
storm, you should disconnect your DF450
because damage may occur.
Note 2.
If a fault occurs during the 12-month warranty
period and it is due to accidental or wilful
damage (including lightning and electrical
damage), BT will not replace or repair the
equipment free of charge. Should any damage of
this nature occur, you are advised to claim
against your home contents insurance.

Check that your DF450 is complete. When
you unpack you must have:
• DF450 plain paper fax with attached
•
•
•
•
•

mains lead.
Automatic sheet feeder cassette.
Sent document tray.
Received document tray.
Telephone line cord.
Print cartridge (print head with ink
cartridge attached).

4

Setting up

1 Check your telephone wall
socket

2 Plug the telephone line cord
into the socket on back of the
machine
When fitted correctly, the line cord should
click into place.
TEL2 TEL1

LINE

If you do not have a BT socket, call BT* and
ask for a BT engineer to come and fit the right
socket. This is a chargeable service.
*Call 150 if you are a residential customer or
152 if you are a business customer.

3 Plug into the BT socket
Plug the telephone line cord into
your socket

5

Setting up

4 Plug the mains lead into a
convenient socket

5 Fit your DF450 attachments
to the main unit

Your DF450 automatically performs a quick
self test. The Liquid Crystal Display shows
AUTOMATIC RX and ADD PAPER.

Automatic sheet
feeder cassette

The DF450 is designed to be permanently
connected, ready to receive and send faxes 24
hours a day. If you need to turn the machine off,
switch off at the mains power plug. The machine
does not have an on/off switch.

❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍

A4 I

DF 450
AB

2

GH
I

0

WX
Y

V

✱

RX MODE

O

S

8

STD FINE HALF TONE

1

2

3

4

5

6

MN

6

TU

7

DE

3

JKL

5

PR

F

C

1
4

FUNCTION

CLEAR

RESOL. CONTRAST

§

©

-

+

QUICKDIAL LAST TX EXTERNAL HOLD

9
A-a

REDIAL

PAUSE

2. TONE

7

8

9

10

QZ

P - TB

SYMBOLS

MONITOR

START

STOP

ERROR

Received document
tray

Sent document tray

6

Setting up

To fit the automatic sheet feeder

d

d

To fit the received document tray

• Slide the received document tray into the

slots on the base of the main unit.
To fit the sent document tray

d

d

• Slot the automatic sheet feeder cassette into

• Slot the sent document tray into the front of

the main unit. It will click into place.

7

the main unit. Make sure it is fully inserted.

Setting up

Fully assembled DF450 with attachments fitted
Automatic sheet feeder
(with document support
fully extended)

Automatic document feeder
Printer cover

Control panel

Sent document tray (with
document support fully
extended)

Received document tray

8

Setting up

6 Place paper in the automatic
sheet feeder
The DF450 can hold up to 70 sheets of plain
paper for incoming faxes and copying. Paper
sizes can range from A4 (210 x 297mm) to US
Legal (216 x 349mm).

7 Install the print cartridge
• Open the printer cover on the top of the

main unit to reveal the print cartridge
housing.
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍

• Open the front cover of the sheet feeder by

pulling it forward.
• Making sure the cover is fully open, slide the
paper into the feeder, then close the cover.
DF 450
AB

2

GH

I

3

JKL

5

PR

6

8
0

WX
Y

V

S

TU

7

✱

STD FINE HALF TONE

1

2

3

4

MN
RX MODE

O

4

DE
F

C

1

FUNCTION

CLEAR

RESOL. CONTRAST

§

©

-

+
5

6

7

8

9

10

QUICKDIAL LAST TX EXTERNAL HOLD

9
A-a

REDIAL

PAUSE

2. TONE

QZ

P - TB

SYMBOLS

MONITOR

START

STOP

ERROR

• Remove the print cartridge from its box and

remove the protective film from the nozzle.

When adding more paper before the feeder is
empty, load the new paper behind the existing
pages in the cassette.
Once paper is inserted in the automatic sheet
feeder, the display will show check the print head.
If the print head has been installed the display
will show the date and time.

9

Contacts
Do not touch
Nozzle
Do not touch

Avoid touching the print nozzle or the electrical
contacts, as this may damage the print cartridge.

Setting up

• Slot the cartridge into the housing, with

the electrical contacts facing the front of
your DF450.

If the display shows CHECK PRINT HEAD,
remove and re-install the print cartridge, making
sure that the protective film is removed from
the nozzle. If you keep getting the same message,
call the BT DF450 Helpline service, Freefone
0800 215 200.

• Push the cartridge towards the front of

• To remove the print head , pull back the two

the machine until it clicks into place.

green tabs to release the catch and lift the
cartridge out.

Replacement ink cartridges.

• Close cover.
• Your DF450 will automatically run a print
test. Display shows: CHECK PRINT OUT.
• Press 1 to return to standby mode or press 0

You can buy replacement ink cartridges
separately, saving the cost of a complete print
cartridge.
A new print head is recommended after every
eight ink cartridges. The Maintenance section in
this guide covers print cartridge maintenance
and replacement. To order print cartridges
Freefone 0800 590009.

to repeat the print test.

10

Setting up

8 Connecting a phone or an
9 Setting the time and date
answering machine to your DF450 If your DF450 does not show the correct date
Connect a phone or an answering machine to
your DF450 by plugging it into the socket on
your DF450’s line cord.

and time when you switch it on, you can
change the setting.

START

FUNCTION

• Press the FUNCTION button; display shows
the FAX SET UP menu.
• Press the START button; display shows
VARIOUS SETTINGS FUNC/START/STOP.
• Press the FUNCTION button until display
shows DATE AND TIME.
• Press the START button; display shows the

Answering
machine
or phone
line cord

format for the day, month and year, ie,
DD/MM/YY.
• Press the START button again; display
shows the 24-hour format, ie, 24H.

DF450 line cord

• Connect a telephone or answering machine

as shown below.

OPTIONS

1

2

AB

C

JK

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5

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MEMORY

INTERCOM

SECRECY

SELECT

Freestyle 320

DE

3

MN

6

WX

9

YZ

RS

8
0

V

7

✱

O

PQ

L

GH

4

F

Network
Services

REDIAL

TALK

POWER

BT
socket

IN USE

INTERCOM

CHARGING

Phone or answering
machine

DF450

Network
Services

OPTIONS

AB

C

I

TU

DE

3

MN

6

WX

9

YZ

RS

8

V

INTERCOM

JK

5

O

PQ

7

✱

L

GH

4

MEMORY

Freestyle 320

F

2

1

High Capacity Answering Machine
with Time Day Stamp

SELECT

0
SECRECY

REDIAL

TALK

POWER

IN USE

2-WAY
REC.

STOP

MEMO

REW
SAVE

FF

DF450

11

INTERCOM

CHARGING

PLAY

–

BT
socket

PAUSE

MESSAGES

ANSWER
ON/OFF

+

Answering
machine

Phone

To switch the clock between the 12-hour and
24-hour setting, press the § © buttons.
• Press the START button; display shows the
date and time, eg: DD/MM/YY
HH/MM
01 - 01 - 96
09.22
• Cursor flashes on the first digit of the date.

If you are using the 12-hour clock, ensure the
correct morning or afternoon time is shown by
pressing FUNCTION to display either P for pm
or A for am.

Setting up

• Press the correct NUMBER button to enter

the day you want. The cursor automatically
moves onto the next number selection.
• If you make a mistake, use the § © buttons
to scroll back and forth along the line to
change any number.
• Press the START button to confirm the
setting. The date and time will be
updated automatically.
• Press the STOP button to finish or cancel
the setting and return to the original
operating mode. Or, if you wait, your DF450
will automatically return to standby.
The date and time will be printed at the top of
every fax page you send.

When adjusting the settings, if you do not touch
any buttons for over a minute, the DF450 will
automatically reset itself to standby mode.

10 Setting your name and fax
number
Your name and fax number can be printed at
the top of every fax page you send.

START

FUNCTION

• Press the FUNCTION button until the display
shows INSTALLATION. (If you make a
mistake, press the STOP button to reset.)
• Press the START button; the display shows
TEL. LINE SET-UP.
• Press the FUNCTION button until the display
shows STATION NAME.
• Press the START button; the display shows
TYPE YOUR NAME.

Use the keypad to type in the letters you
want. Do this by pressing the number button
which shows the letter you want. Pressing
the button changes the letter you require. For
example, if your want to store the name JOHN:
GH

I

5

MN

6

O

4

JKL

• Press 5 on the keypad until J appears in the

display.
• Press the © button to advance the cursor.
• Press 6 on the keypad until the display
shows O.
• Press the © button to advance the cursor.
• Enter the letter H by pressing 4 on the
keypad until H appears on the display.
• Press the © button to advance the cursor.

12

Setting up

• Press 6 on the keypad until N appears on the

display. The whole name is now entered.
• To enter a space, press the © button.
When entering a name, you can insert various
symbols, such as &, using the ✱ and # buttons
to scroll through the options.
You can move back and forth to the letters you
want by pressing the § © buttons. Delete the
whole name by pressing the CLEAR button. Press
the A - a button to change between CAPITAL
LETTERS and small letters.
• Press the START button to confirm your
selection; the display shows PHONE NUMBER.
• Press the START button again; the display
shows TYPE YOUR NUMBER. Dial in your

number.
• To enter a space, press the © button.
You can scroll back and forth to change any
digits using the § © buttons.
• Press the START button to confirm your
number. Display shows DIAGNOSTICS. To

return to the DF450’s standby mode, press
the STOP button. Or if you wait, the DF450
will automatically return to standby.
Your DF450 has back-up batteries fitted. In case
of a power cut or disconnection from the mains, it
will remember the date and time as well as any
numbers and names stored in the memory.

13

International codes
You can display your number as an international
number. Press the ✱ button. This is printed on
your header as a +.
For example, +44 171 123 1234.

11 Name and fax number
position
Your name and fax number can be printed
inside or outside the image area of a sent
document. Your DF450 is pre-set to print this
information inside.
To change header position

START

FUNCTION

• Press the FUNCTION button until the display
shows FAX SET-UP.
• Press the START button until the display
shows HEADER INSIDE.
• Press the © button; the display shows
HEADER OUTSIDE.
• Press the START button to confirm setting.
• Press the STOP button to return to standby.

Using your DF450

Using your DF450
Your DF450 fax lets you set the functions to
suit the way you work. The most commonly
preferred settings are pre-selected as standard.
You can alter or choose new settings as desired.
Warning - do not try to send or copy
documents which are:
• still wet with ink or correcting fluid
• very thick or very thin (paper should be
between 70-90 gsm for best results)
• stapled or clipped together
• torn, folded, crumpled or with punched holes
• on carbon paper or glossy paper

into the automatic document feeder.
• The first page is automatically drawn a little
way into the feeder.
• Display shows: DOCUMENT READY

❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍

A4 I

DF 450
AB

1

2

GH
I

PR

8
0

WX
Y

V

S

7

STD FINE HALF TONE

1

2

3

4

5

6

MN

6

TU

✱

DE

3

JKL

5

RX MODE

O

4

F

C

When adjusting the settings, if you do not touch
any buttons for over a minute, the DF450 will
automatically reset itself to standby mode.

To load documents for faxing
• Feed up to 10 pages at a time, face down,

FUNCTION

CLEAR

RESOL. CONTRAST

§

©

-

+

QUICKDIAL LAST TX EXTERNAL HOLD

9
A-a

REDIAL

PAUSE

2. TONE

7

8

9

10

QZ

P - TB

SYMBOLS

MONITOR

START

STOP

ERROR

If you make a mistake, press the STOP button to
cancel the operation and return to standby mode.

14

Using your DF450

To send a fax

You have a choice of ways to dial a fax number:
Normal dialling
• Load document
• Dial the number you want. (Press the § ©
buttons to move the cursor to change
any number you press by mistake.)
• Press the START button.
• After the last page has been sent, the display
shows TX COMPLETED and you hear a beep.

If your fax stops for any reason, you will hear a
three-second beep and the ERROR light comes
on. Press the STOP button remove any
remaining paper and begin the process again.
If pre-selected, an error report will be
automatically printed (see page 26).

One-touch dialling
• Load document
• Press the one-touch button you want (1-10),
display shows the name and number stored.
• Your fax is sent automatically.
• After the last page has been sent, the display
shows TX COMPLETED and you hear a beep.

To redial the last number

Quick dialling
• Load document
• Press the QUICKDIAL button.
• Using the keypad, dial the two digit short
code (01 - 32) you want; the display shows
the name and number you have stored in
the memory.
• Your fax is sent automatically.
• After the last page has been sent, display
shows TX COMPLETED for a few seconds.

To stop a fax you are sending

To see the numbers and names stored in the
Quickdial memory, press the QUICKDIAL button
then the § © buttons to scroll backward and
forward through the list.

15

If the number you are calling is engaged or the
connection is not made, your DF450 will
automatically redial the number every two
minutes up to three times.

Your DF450 will redial a fax number for you.
• Press the REDIAL button; the display shows

last number dialled.
• Press the REDIAL button again; number is

dialled.

If you choose, you can stop a fax during
transmission.
• Press the STOP button once to halt the

transmission and once again to eject a
page currently being scanned.
• Press the STOP button again to return
the machine to standby.
Sending small text or pages with pictures.
If you are sending small print, illustrations or
photographs, you can alter the RESOLUTION and
CONTRAST settings to ensure the clearest possible
transmission. See Additional Features, page 25.

Using your DF450

Delaying a fax

To receive a fax

This allows you to transmit a fax automatically
at a pre-set time. This can be useful if you want
to send a fax abroad or at a time when call
charges are lower.

Your DF450 is pre-set to AUTOMATIC RX which
means it is ready to receive faxes automatically.
Remember to make sure there is plenty of
paper in the automatic sheet feeder.

• Insert the document to be faxed in the

• When a call is received, your DF450 display
shows CONNECTING.

Automatic Document Feeder.
• If necessary, adjust contrast and resolution
(see Additional Features, page 25)
• Press the FUNCTION button until the
display shows DELAYED TX.
If a delayed sending has already been set, you can
cancel the number by press the CLEAR button.
• Press the START button and enter the fax

number.
• Press the START button, display shows
TYPE TIME.
• Set the time you want the document to be
sent, using the keypad.
If using the 12-hour clock, press the FUNCTION
button to switch between am and pm.
• Press the START button to confirm the

setting.

The fax is received and printed.
• After the last sheet is printed, display
reverts to AUTOMATIC RX.

See Setting the answer mode on page 17 for
details of reception modes and operation with a
phone or answering machine
During reception, if the paper or ink runs out, a
paper jam occurs or the printer cover is opened,
then printing will be interrupted, reception will
continue and your DF450 will store the incoming
fax in its memory*. When the problem has been
rectified, your DF450 will print out the
documents stored in the memory.
*See page 38 for document memory capacity.

To copy documents

Your DF450 can be used to copy a document.

• Your DF450 will print a report confirming

the details. Do not remove the document.
• Your fax will be sent at the time you have

specified.
If the document is removed before sending, the
DELAYED TX setting is cancelled.

• Place document face down in the document
feeder and press the START button.
• If you need more than one copy of a

document, simply repeat the process.
• Press the STOP button to halt copying.
• Press the STOP button again to eject page.

16

Using your DF450

Setting the answer mode
Your DF450 will operate in one of four modes:
MANUAL RX, PHONE/FAX RX, TAD/FAX RX or
AUTOMATIC RX.
To change the answer mode:
• Press the RX MODE button until display

shows the required mode.

Which mode is correct for you?

PHONE FAX RX

A telephone should be connected to your
DF450 when using this mode.
Incoming calls will ring the attached phone.
When a call is received, the phone will ring
twice and, if the handset is not picked up,
your DF450 will take the call and check fo
fax tones.
• If your DF450 hears fax tones, it will receive

MANUAL RX
•

A telephone should be connected to your
DF450 when using this mode.
Incoming calls will ring the attached phone.

•
•

If a call is not answered after 7 rings, your
DF450 will automatically switch to fax reception
and answer the incoming call.

When the phone rings
• Pick up the handset. If you hear fax tones,
press the START button on your DF450 and
replace the handset. The fax will be received.

17

•

the fax normally.
If it does not hear fax tones, your DF450
will beep to indicate an incoming phone call,
the display will show LIFT HANDSET.
Lift the handset in order to speak.
Your DF450 will beep for up to 20 seconds.
(to adjust the time see Additional Features,
page 25). If the handset is not lifted after this
time, your DF450 will assume it is a fax.
It will stay in fax reception mode for about 30
seconds or, if it is a fax call, until the fax has
been received.
If you pick up the phone within the first two
rings and you hear fax tones, press the
START button, replace the handset and your
DF450 will receive the fax.

Using your DF450

TAD FAX RX (telephone answering device)

This allows your DF450 and a connected
answering machine to take phone and fax calls.
When a phone call is received, the answering
machine will take it and the display will show
OFF HOOK.
If the call is a fax, your DF450 will override the
answering machine and automatically receive
the fax - normally after the outgoing message
has been played.
AUTOMATIC RX

This mode is for use when you are using your
DF450 as a fax machine only. Faxes are
received and printed automatically.
There is no audible indication of an incoming
call in this mode.

Using a phone or answering
machine with your DF450
To make a call from an attached phone

You can make a phone call in a number of ways
either
• By using the phone as normal.
or
• Press the MONITOR button on the DF450
and dial the number, pick up the handset
and wait for the number to answer.
or
• You can use the telephone numbers stored
in your DF450’s memories. To dial a phone
number, make sure the Automatic
Document Feeder is empty. Select the One
Touch buttons or Quickdial codes. Press the
START button, pick up the handset to speak.
Using the HOLD button
When using a telephone with the DF450, you
may not want your caller to hear your
conversation with someone else in the room. Press
the HOLD button and you can talk without your
caller hearing. Your caller will only hear a
regular tone to show that the line is open. Press
the HOLD button again to return to your caller.

18

Using your DF450

To send a fax using the phone to dial

You can dial a fax number using the phone
connected to your DF450.
• Insert the document to be faxed in the

To transfer a fax call from a telephone
extension
• Press the
button on your telephone twice

✱

and replace the handset. Your DF450 will
automatically take the call.

Automatic Document Feeder.
• Dial the number you want on the phone.
• Press the START button on your DF450. (To
cancel at any time, press the STOP button.)
• Replace the handset.

If the ✱✱ command conflicts with other
equipment or services connected to the line,
you can alter the second digit of the remote
start command as follows:

To use with an answer machine
With your DF450 set to TAD/FAX mode, your

• Press the FUNCTION button until the display
shows INSTALLATION.
• Press the START button until the display
shows REMOTE START:ON. (If the display
shows REMOTE START:OFF, press the § ©
buttons to select ON.)
• Press the START button display
shows TYPE CODE.
CODE (0/9, )

connected answer machine will take all calls as
normal. Your DF450 will respond after the
outgoing message if it hears fax tones and will
override the answer machine to automatically
receive the incoming fax.
To enable the reception of faxes from a fax
machine which does not send fax tones, your
DF450 is pre-set to switch to fax reception if,
when it is called, it detects up to 6 seconds of
silence. You may need to adjust this time to suit
your answering machine. Shorten the time if
your DF450 fails to cut in, or lengthen it if it
cuts in while a caller is leaving a message (see
Additional Features, page 25).

Remote control from an extension
If your DF450 is connected to a telephone
network which has other telephone
extensions, it is possible to take the call on an
extension and, if it is a fax call, transfer the call
to your DF450.

19

✱

The ✱ will flash; you can now replace it with
another character (0 and 9) using the keypad.
• Enter the new digit then press the START

button to confirm your choice.
• Press the STOP button to return to standby.
As a precaution, to prevent your DF450 cutting in
during a voice call, press the
and # buttons
before starting a conversation. This will immobilise
your DF450 during the call and may be necessary
as there are rare occasions where certain voice
tones or pitches can be mistaken for fax tones,
which would set off a fax response.

✱

Using your DF450

Polling
This allows another fax machine to retrieve a
document from your DF450 or for your DF450
to retrieve a document from another fax
machine at a time that’s convenient to them.
To set up a fax document to be polled by
another machine
Polling calls are charged to the machine which
retrieves the document.

START

FUNCTION

• Insert the document.
• Press the FUNCTION button until the display
shows POLLING TX.
• Press the START button until the display
shows POLLING TX SET.

Your fax will then be sent when another fax
machine calls your DF450.

To poll a document from another fax
machine

You can retrieve a document from another fax
machine. The other fax machine must be set,
ready for polling.

START

FUNCTION

• Press the FUNCTION button until
POLLING RX is displayed.
• Press the START button; the display shows
TYPE FAX NUMBER.
• Enter the fax number you wish to poll.
• Press the START button; the display shows
TYPE TIME.
• Press the START button to poll immediately

or use the keypad to set the time when you
want your DF450 to begin polling.
Your DF450 is now set to poll at the time you
have specified.

• To cancel the POLLING settings press the
STOP button.

20

Using your DF450

Storing one-touch and Quickdial
numbers and names
To store one-touch numbers and names

You can store a fax number, phone number and
a name under each of the 10 One-Touch
buttons. Each number can be up to 38 digits
long and each name up to16 characters long.
To enter a fax number

START

FUNCTION

• Press the FUNCTION button, display
shows FAX SET-UP.
• Press the START button.
• Press the FUNCTION button until the display
shows ONE TOUCH DIAL.
• Press the START button and then the (1-10)

button under which you want to store the
number/name; the display shows FAX NO:
START/STOP/< >.
• Press the START button.
• Dial the fax number you want.
• Press the START button to confirm the
setting.
If you make a mistake when keying in a number,
you can delete it by pressing the CLEAR button.

21

If you are connected to a switchboard, you may
also need to store a pause or PBX access code
using the EXTERNAL/PAUSE button, see page 31,
Connecting to a switchboard.

After confirming the number, the display
shows SPEED. This is already set to the fastest
possible transmission speed and you will not
normally need to adjust it. Press the START
button, display shows OVERSEAS.
If you have entered an overseas number, press
the § © buttons to select ON from the display
as this ensures clearer transmission.
• Press the START button to confirm setting;
the display shows: NAME

You can now key in the name of the person or
company whose number you have just entered.

Using your DF450

To enter a name

• Press the START button to confirm your

Use the keypad to enter the name. To do this,
press the number button which shows the
letter you want. By pressing the button you can
change the letter. For example, if you want to
store the name JOHN:

selection. The display asks if you want to
enter another one-touch number.
• To enter another number/name, press the
START button again followed by the
one-touch button you want and repeat the
previous sequence.
• Press the STOP button to return the DF450
to standby mode.

GH

I

5

MN

6

O

4

JKL

• Press 5 on the keypad, until display shows J.
• Press the © button to advance the cursor.
• Press 6 on the keypad until the display
shows O.
• Press the © button to advance the cursor.
• Press 4 on the keypad until H appears on the

display.
• Press the © button to advance the cursor.
• Press 6 on the keypad until N appears on the
display. The whole name is now entered.
• To enter a space, press the © button.

To enter a phone number

START

FUNCTION

• Press the FUNCTION button; the display
shows FAX SET-UP.
• Press the START button.
• Press the FUNCTION button until the display
shows ONE TOUCH DIAL.
• Press the START button and then the (1-10)

button under which you want to store the
number/name; the display shows FAX NO:
START/STOP/< >.
Press © to change the display to TEL
NO: START/STOP/< >.
Press the START button.
Dial the phone number you want.
Press the START button to confirm.
Display shows: NAME.

If you want to change your entry, you can move
back and forth to the letters you want by pressing
the § © buttons. Delete the whole name by
pressing the CLEAR button. Press the A - a button
to change between capital letters and small letters.

•

When entering a name you can insert various
symbols, such as &, using the ✱ and # buttons to
scroll through the options.

If a name has already been entered, press the
START button to continue or the STOP button
to return to standby. To enter or edit a name
see To enter a name.

•
•
•
•

22

Using your DF450

To store Quickdial numbers and names

Your DF450 can store up to 32 names and
numbers which can be accessed by the
Quickdial facility. Names can be up to 16 letters
long and numbers up to 38 digits long.

If you make a mistake when keying in a number,
you can delete it by pressing the CLEAR button.
To change transmission speed

After confirming a fax number, the display
shows SPEED. This is already set to the fastest
possible transmission speed and you will not
normally need to adjust it. To change it for an
overseas transmission, press the START
button; the display shows OVERSEAS. Press
the § © buttons to select ON from the display.
This ensures clearer transmission.

Use the keypad to enter the name. To do this,
press the number button which shows the
letter you want. By pressing the button, you
can change the letter. For example, if you want
to store the name JOHN:
GH

4

23

5

MN

6

• Press 5 on the keypad, until display shows J.
• Press the © button to advance the cursor.
• Press 6 on the keypad until the display
shows O.
• Press the © button to advance the cursor.
• Press 4 on the keypad until H appears on the

display.
• Press the © button to advance the cursor.
• Press 6 on the keypad until N appears on the
•
•

•

•

• Press the START button to confirm setting,
display shows: NAME

JKL

O

you want.
• Press the START button.
• Dial in the fax number you want.
• Press the START button to confirm.

To enter a name

I

To enter a fax number
• Press the FUNCTION button; the display
shows FAX SET-UP.
• Press the START button.
• Press the FUNCTION button until the display
shows CODED SPEED DIAL.
• Press the START button; the display shows
TYPE SPEED NO.(01-32)
• Using the keypad, type in the two-digit code

You can now key in the name of the person or
company whose number you have just entered.

display. The whole name is now entered.
To enter a space, press the © button.
Press the START button to confirm your
selection. The display asks if you want to
enter another one-touch number.
To enter another number/name, press the
START button again followed by the
two-digit code you want and repeat the
previous sequence.
Press the STOP button to return the DF450
to standby mode.

Using your DF450

If you want to change your entry, you can move
back and forth to the letters you want by pressing
the § © buttons. Delete the whole name by
pressing the CLEAR button. Press the A - a button
to change between capital letters and small letters.

If a name has already been entered, press the
START button to continue or the STOP button
to return to standby. To enter or edit a name
see “To enter a name”.
• Press the START button to confirm your

When entering a name you can insert various
symbols, such as &, using the ✱ and # buttons to
scroll through the options.

To enter a phone number
• Press the FUNCTION button, display
shows FAX SET-UP.
• Press the START button.
• Press the FUNCTION button until the display
shows CODED SPEED DIAL.
• Press the START button and the display
shows TYPE SPEED (01-32).
• Using the keypad, type in the two-digit code
you want; the display shows FAX NO:
START/STOP/< >.
• Press © to change the display to TEL
NO: START/STOP/< >.
• Using the keypad, type in the two-digit code
•
•
•
•

selection. The display asks if you want to
enter another Quickdial number.
• To enter another number/name, press the
START button again followed by the
two-digit code you want and repeat the
previous sequence.
• Press the STOP button to return the DF450
to standby mode.

Keep a list handy of all the numbers and names
you have stored on the memory. Your DF450 can
print out a list of all the names and numbers you
have stored. See ‘Print outs’ on page 26.

you want.
Press the START button.
Dial the phone number you want.
Press the START button to confirm.
Display shows: NAME.

24

Additional features

Additional features Your DF450 has a range
of extra features which you can set to suit the way you work

Adjusting the resolution and
contrast
You can choose different settings to ensure
improved quality when sending or copying a
document.
RESOL. CONTRAST

Your DF450 is pre-set to allow you to hear the
signals exchanged during a fax call in the initial
connection phase via its in-built speaker.
To switch off the fax monitor

©

§

+
• Insert the document to be faxed or copied
• Press the CONTR button three times to view
the options. You can choose LIGHT,
NORMAL or DARK. For light documents in
pencil or thin print quality, select the DARK
setting. For documents with a dark
background, select the LIGHT setting.
• Press the RESOL button and the display will
move the arrow between the settings STD,
FINE and HALF TONES.
For small or hard-to-read text, select the
FINE setting.

START

FUNCTION

• Press the FUNCTION button until the display
shows INSTALLATION.
• Press the START button.
• Press the FUNCTION button until the display
shows DIAGNOSTICS.
• Press the START button until the display
shows LINE MONITOR: ON.
• Press the © buttons to switch the display
to LINE MONITOR: OFF.
• Press the START button to confirm setting.
• Press the STOP button to return to standby.

➔

To change the speaker volume

STD FINE HALF TONES

For pages containing pictures, photographs
or drawings, select HALF TONES.
➔

➔

STD FINE HALF TONES

25

Fax monitor

You can change the volume of your DF450’s
in-built speaker.
• Press the MONITOR button.
• Press the § © buttons to adjust the volume.

Additional features

Print-outs
Automatic print-outs

Your DF450 will automatically print an activity
report after every 32 transactions. It can also
be programmed to print individual reports after
every successful or failed transmission.

Power failure report
Your DF450 will print a status report
automatically when power is restored after a
power failure during transmission or reception.
The report includes the number of pages which
were sent or received before the failure occurred.
To print manual reports

To automatically print individual reports
START

FUNCTION

• Press the FUNCTION button until the display
shows FAX SET UP.
• Press the START button until the display
shows one of the three options available:
FAILED TX REPORT, TX REPORT:OFF, or
TX REPORT:ALWAYS.
• Pressing the § © buttons will display each

• Press the FUNCTION button until the display
shows PRINT OUT REPORT.
• Press the START button, display shows:
PRINT:TX REPORT.
• Pressing the § © buttons will display the
other options: PRINT:JOURNAL and
PRINT OUT:EXIT.
• Press the START button to select your

of the three options.
• Press the START button to select your
option.

PRINT:TX REPORT will give an activity report

START

FUNCTION

TX REPORT:ALWAYS - Your DF450 will
automatically print an individual activity report
after every transmission.
FAILED TX REPORT - an individual activity
report is automatically printed after every
failed transmission.
TX REPORT:OFF - no individual reports will be
automatically printed.

option.

for the last fax sent.
PRINT:JOURNAL will give an activity report for
the last 32 transactions.
PRINT OUT:EXIT returns your DF450 to
standby mode without printing.

26

Additional features

To print a list of stored names, numbers and
settings

START

To print a list of installation parameters

You can print out a list of your DF450’s current
settings (answer mode, header position etc.)

FUNCTION

• Press the FUNCTION button until the display
shows FAX SET UP.
• Press the START button.
• Press the FUNCTION button until the display
shows PRINT OUT SET-UP.
• Press the START button; the display shows
PRINT SETTINGS.
• Pressing the § © buttons will display the
other options: PRINT: ONE TOUCH,
PRINT: SPEED DIAL, PRINT OUT: EXIT
• Press the START button to select your

option.

START

FUNCTION

• Press the FUNCTION button until the display
shows INSTALLATION.
• Press the START button; the display shows
TEL. LINE SET UP.
• Press the FUNCTION button until the display
shows PRINT INSTALL.
• Press the START button; the display shows
PRINT OUT: START.
• Pressing the § © buttons will display the
other option: PRINT OUT: EXIT.
• Press the START button to select your

option.
PRINT SETTINGS will print out a list of
the option settings you have selected on
your DF450.
PRINT: ONE TOUCH will print out a list of
names and numbers stored under the
one-touch buttons.
PRINT: SPEED DIAL will print out a list of
names and numbers stored in the Quickdial
memory.
PRINT OUT: EXIT returns you to standby mode
without printing.
If no one-touch or Quickdial codes have been
programmed, display shows EMPTY DIRECTORY
and the print-out will have the symbol “-”.

27

START will print a list of your DF450’s

installation parameters.
EXIT returns you to standby mode without

printing.

Additional features

Adjusting for different-size paper
To send a different-size document

Your DF450 can send documents from
148 x 148mm up to 216 x 600mm in size. Adjust
the document feeder (if necessary) by moving
the side supports.
A4 I

To change the automatic sheet feeder
cassette to take different-size paper

Your DF450 automatic sheet feeder can hold
A4 (210mm wide) or Legal (216mm wide)
paper. Adjust the automatic sheet feeder (if
necessary) by moving the side supports.
• First remove the paper cover from the front

of the automatic sheet feeder.
• Insert a small coin into the small groove just

in front of the hinge, this will release the
hinge to allow you to pull out the cover.

To receive a different-size document

The automatic sheet feeder is pre-set to take
A4 (210mm wide) paper, but can be adjusted to
take paper 216mm wide also.

START

FUNCTION

• Press the FUNCTION button.
• Press the START button until the display
reads SIZE:
• Press the § © buttons to select between
SIZE:A4, SIZE: LETTER and SIZE: LEGAL.

• Insert a small coin in the groove at the

bottom of the automatic sheet feeder to
release the black side supports.

A4 - 210mm wide, Legal and letter - 216mm wide.
• Press the START button to confirm your

selection.
• Press the STOP button to return the DF450
to standby.

L

A4

Repeat this action for both sides of the automatic
sheet feeder.

28

Additional features

• Gently pull back the coin to lift out the side

supports.

Changing the size of incoming
faxes
Your DF450 can reduce incoming faxes onto a
smaller page area.
The standard setting is 94% reduction which
allows you to print a document and the fax header
onto an A4 sheet.
To change the standard 94% setting:

START

• Remove the black side supports and put

them in the correct slot:
L = Legal (216mm wide)
A4 = 210mm wide

FUNCTION

• Press the FUNCTION button.
• Press the START button until the display
shows REDUCTION: 94%.
• Press the § © buttons to display the
reduction options: 80%, 76%, 70% and OFF.
• Press the START button to select your

chosen option.

Repeat this action for both sides of the automatic
sheet feeder.

➔

L

The DF450 display now shows SURPLUS. This
enables you to receive faxes of a longer page
length than the paper you are printing on.
• Press the § © buttons to view the available
settings: SURPLUS: ON, SURPLUS: OFF or
SURPLUS: AUTO
SURPLUS: ON means any overlapping text will

L

be printed onto a separate page.
A4

• Replace the paper cover on the front

of the automatic sheet feeder.
29

SURPLUS: OFF means any overlapping text will

not be printed.

Additional features

SURPLUS: AUTO is similar to SURPLUS: ON

but means that your DF450 will not print an
additional sheet if the received page is only
slightly longer than A4 (297mm). This prevents
the printing of unwanted pages and is your
DF450’s default setting.
• Press the START button to confirm your

selection.
• Press the STOP button to return your DF450
to standby.

Adjusting the beep in phone/fax
mode
You can adjust the volume and the length of
time the DF450 will beep before reverting to
answering the call.

To change the beep volume
• Press the FUNCTION button until the display
shows: FAX SET-UP.
• Press the START button until the display
shows: BUZZER VOL.: LOW.
• Press the § © buttons to select between
LOW and HI.
• Press the START button to confirm the

setting.
• Press the STOP button to return to standby.

Adjusting the silence lapse time
This is the silent period which your DF450 will
interpret as an indication to switch to fax
reception mode.
To set the silence lapse time

To change the beep length
START
START

FUNCTION

• Press the FUNCTION button until the display
shows INSTALLATION.
• Press the START button until the display
shows TEL LINE SET-UP.
• Press the START button; the display shows
FAX/TEL TIMER: 20.
• Press the § © buttons to display the beep
options: 15, 20, 30 or 40 seconds.
• Press the START button to confirm your

FUNCTION

• Press the FUNCTION button until the display
shows: INSTALLATION.
• Press the START button until the display
shows: SILENCE LAPSE. Pressing the § ©

buttons displays the available options.
• Press the START button to confirm your

selection.
• Press the STOP button to return to standby.

selection.
• Press the STOP button to return to standby.

30

Additional features

Connecting your DF450 to a
direct exchange line

Connecting your DF450 to a
private switchboard

Your DF450 is pre-set to TONE dial for
connection to direct exchange lines. In the
unlikely event that you need to change this
setting to PULSE dialling:

For the DF450 to use the functions of a
switchboard, you may need to change the
TONE/PULSE setting and the PUBL. LINE to
the PRIV. LINE setting. If in doubt, ask your
communications manager or switchboard
supplier.

START

FUNCTION

• Press the FUNCTION button until
the display shows INSTALLATION.
• Press the START button until the display
shows PSTN DIAL: TONE.
• Press the © button to select PULSE.
• Press the START button to confirm the

setting.
• Press the STOP button to return to standby.

START

FUNCTION

• Press the FUNCTION button until
the display shows INSTALLATION.
• Press the START button until the display
shows TEL LINE SET-UP.
• Press the START button. Display shows
PUBL. LINE (PSTN).
• Press the © button to select PRIV.LINE (PBX)
• Press the START button to confirm the
setting; the display shows PBX DIAL:TONE.
To select PBX DIAL: PULSE, press

the © button.
• Press the START button to confirm the
setting.
• Press the STOP button to return to standby.

Inserting a pause
Some switchboards require a delay between
dialling the access code and the fax/phone
number. You can press the PAUSE button to
insert this delay before dialling the number.

31

Additional features

Setting the external button
Your switchboard may require an access
code in order to give you an outside line.
This external line command can be stored
under the EXTERNAL button.

START

FUNCTION

• Press the FUNCTION button until the display
shows INSTALLATION.
• Press the START button until the display
shows PRIV.LINE:(PSTN).
• Press the § © buttons until the display
shows PRIV.LINE:(PBX).
• Press the START button, display
shows PBX DIAL:TONE.
• Press the START button, display
shows EXT LINE PREFIX.
• Press the § © buttons to display the
external line options PREFIX, EARTH or
FLASH.
EARTH = Earth recall FLASH = Time break recall
• Press the START button to confirm the

setting.
• If you chose PREFIX, the display shows:
TYPE PREFIX (0-9).
• Enter your access code (up to three digits).
• Press the START button to confirm the
setting.
• Press the STOP button to return to standby.
Your access code is now programmed and can
be dialled by pressing the EXTERNAL button
before dialling a number.

The EXTERNAL feature can also be stored as part
of a one-touch or Quickdial entry.

Error correction mode (ECM)
Error correction mode ensures that fax
transmissions are of the best possible standard
when sending or receiving from another
machine with a similar feature. When it is
selected and in use, an E is shown in the
display at the end of the called number. It is
recommended that this facility is left on.
To switch off error correction mode

START

FUNCTION

• Press the FUNCTION button until
the display shows FAX SET UP.
• Press the START button, display
shows VARIOUS SETTINGS.
• Press the START button until display shows
ECM: ON.
• Press the © button to change display to
ECM: OFF.
• Press the START button to confirm setting.
• Press the STOP button to return to standby.

32

Maintenance

Speed

Diagnostics

This feature controls the fax transmission
speed at the start of a transmission. It is pre-set
to 9600 for optimum performance, but it can
sometimes help with overseas calls to change
the speed to 4800.

This feature allows an engineer to remotely
test your machine in the event of a problem.
Your DF450 is pre-set to Diagnostics: On.
To switch off diagnostics

To change the speed
START
START

FUNCTION

• Press the FUNCTION button until
the display shows FAX SET UP.
• Press the START button until the display
shows VARIOUS SETTINGS.
• Press the START button, display shows
TX SPEED: 9600.
• Press the © button to change display to
TX SPEED: 4800.
• Press the START button to confirm setting.
• Press the STOP button to return to standby.

33

FUNCTION

• Press the FUNCTION button until
the display shows INSTALLATION.
• Press the START button until the display
shows DIAGNOSTICS.
• Press the START button; the display shows
REMOTE DIAG: ON.
• Press the © button to change display to
REMOTE DIAG: OFF.
• Press the START button to confirm setting.
• Press the STOP button to return to standby.

Maintenance

Maintenance
To fit a new print head

1 Pull back the clip on

You can buy a ready assembled ink cartridge
and print head and install it as shown in the
Setting Up section.

the side of the print
head to release the ink
cartridge and remove
it from the print head.

To fit a new ink cartridge

It is less expensive to simply replace the ink
cartridge. One print head should last for eight
ink cartridges.
• Open the printer cover.

2
1

2 Remove the protective
film from the nozzle of the
new ink cartridge and push
it into the print head until it
clicks into place.
Close the printer cover.

The ink cartridge is located inside the print head.
The print head does not need to be removed while
changing the ink cartridge.

The DF450 will automatically test and clean the
print nozzles, and then generate a test print-out
containing a graduated scale, graphic images
and text. Following the print-out, the display
will show CHECK PRINT OUT.
If the graduated scale is uninterrupted and the
dark areas do not contain white lines, the print
quality is to be considered satisfactory. If not,
repeat the procedure.
• Press 1 if the test print is acceptable.
• Press 0 to repeat the test.

If the print head is still unsatisfactory after a
number of tests, replace the printhead.

34

Help

Cleaning the optical scanner
• Raise the operator console.

• Clean the glass of the optical scanner with

cloth such as a VDU Screen Wipe or cloth
dampened with a specific glass-cleaning
product. Dry the glass carefully. Do not pour
or spray cleaning product onto the glass.

• Release the green lever on the left-hand side

of the white roller. Lift out the white roller.
Clean the white roller with a lint-free cloth to
remove any dirt.

• Put the roller back and close the console.
• Test that the scanner is clean by copying a
Green release lever

35

White paper feed roller

blank sheet of paper. If the copy is not clear,
check the glass again. If copies are still not
clear, call the DF450 Helpline Service
on Freefone 0800 215 200.

Help

Help If you have any problems using your DF450, this section

will give you the most common solutions.
DF450 doesn’t print properly

Have you removed the protective film from the
ink cartridge or print head or both?
The print head nozzle may need cleaning.
Lifting the print cover and closing it again
makes the DF450 perform an automatic test
procedure, which cleans the nozzle

• Clean the electrical contacts on the print

cartridge in the same way.

Contacts

The electrical contacts for the ink cartridge
may need cleaning.
• Open the printer cover.
• Remove the print cartridge.
• Clean the electrical contacts on the ink

cartridge with a dry cotton wool bud.
Caution: Do not touch the nozzles or contacts.

• The print cartridge cleaning head

may need wiping.
• Wipe the head with a dry cotton wool bud

Contacts
Do not touch

Cleaning
head

Nozzles
Do not touch

36

Help

When the printer cover is opened, the ink
cartridge automatically moves to the centre of the
machine. However, if your DF450 is not
connected to the mains, you can move the printer
head by gently pushing it along its runner to
reveal the print cartridge cleaning head.
Document jam
• If a document you are sending gets jammed,
the display shows REMOVE DOCUMENT.
• Press the STOP button; this may clear the

problem. If not, remove any paper still in the
document tray, raise the operator console
(the section with the keypad and function
buttons) and remove any documents.
• Raise the operator console.

Printing paper jam

If printing paper is jammed:
• Display shows: PAPER ERROR. PRESS
STOP.
• Pressing the STOP button may clear the jam.
• If the jam is not cleared, remove the

automatic sheet feeder cassette, and ensure
paper is inserted correctly. Pull out any
paper jammed in the cassette housing or
received document tray.
If the paper is jammed in the automatic
sheet feeder
• Open the tray cover

• Remove the jammed sheet and close the
• Remove the jammed paper. If necessary,

release the white roller (see: “Cleaning the
optical scanner”, page 35).
• Refit the white roller (if necessary), then
lower the console, replace the document and
try again.

37

cover. You may need to remove the whole
paper tray.

Help

Error light
If the ERROR light on the console lights up:

In the event of power failure, the data retained in
the document memory will be maintained for
several hours.

ERROR

• The called party is disconnected or has not

Print cartridge life

responded or
• The called fax machine is incompatible
with your DF450 or
• Errors have been detected during
transmission/reception.

The replacement ink cartridge contains sufficient
ink to produce 500 copies of the industry standard
test sheet (shown on page 39, which has about 6%
black on white coverage of an A4 sheet).

To switch off the ERROR light, press the
STOP button.
To reset your DF450

If you encounter a problem and your DF450 will
not respond to any button presses, turn the
power switch off for ten seconds. Turning the
power back on will reset your DF450 to standby
mode. Your personalised settings and memorised
numbers will be maintained.

If your average black on white coverage exceeds
this standard then, the number of printed sheets
will be reduced.
To order fax consumables:
Freefone 0800 590009
Warranty

For details of the Terms and Conditions of your
warranty, please refer to the documentation
supplied by your retailer.

Document memory

If your DF450 runs out of ink or paper while
receiving a fax, the document will continue to be
received and stored in your DF450’s memory, to
be printed out when ink/paper is replenished. No
further documents can be received until the
ink/paper is replenished and the documents
stored in the memory have been printed. The
maximum storage capacity is about ten pages of
the industry standard test sheet (shown on page
39).

No dialling tone when using monitor button

Is your DF450 line cord plugged into the
phone socket? Ensure that the speaker volume is
not set to the minimum (see page 25).
Poor print quality

If there is a problem with the quality of a fax you
have sent, or a document you have copied, the
optical scanner may need cleaning (see “Cleaning
the optical scanner”, page 35).

The capacity may be less depending on the
document content.
38

Help

Industry standard test sheet

39

Help

Display messages
MESSAGE

INTERPRETATION

ACTION

DOC. IN MEM.

Incoming documents have
Check nature of problem
been stored in the memory
(no paper or ink) and remedy.
because there was a problem
during reception which
prevented immediate printing.

REC. IN MEM.

Reception continues with
storage in memory because
of paper error or ink out.

Check nature of problem and
remedy.

OUT OF INK

No ink in cartridge.

Change cartridge.

ADD PAPER!

No paper in the sheet feeder.

Insert paper in sheet feeder.

CHECK PRINT HEAD

Print head is not present or
some print nozzles are
clogged so print quality is
affected.

Check presence of print head.
Replace print head.

REMOVE DOCUMENT
PRESS STOP

Document scanning
interrupted.

Remove document by pressing
STOP and re-insert correctly.

PRINT. COVER OPEN

The printer cover is open or
not correctly closed.

Close cover.

KEYBOARD OPEN

Console is open or not
correctly closed.

Remove document and close
console.

PAPER ERROR
PRESS STOP

Paper jam.

Check and insert paper
correctly – press STOP.

SYSTEM ERROR nn

A fatal system error has been
detected.

Switch off fax and switch it on
again. If problem persists, call
Customer Service.

CHECK PRINT OUT
1= EXIT 0 = REPEAT

Print head has just been
replaced.

Check print quality and select
1 or 0.

40

Help

MESSAGE

41

INTERPRETATION

ACTION

CLEANING: ON

Automatic test procedure in
operation.

No action.

NEW PRINT HEAD?
1=YES 2 = NO

Print head has been refitted.

Select 1 or 2 as appropriate. If
you enter 1 and the print head
is not new, the fax machine will
not generate a message when
the ink runs out.

TX COMPLETED

Transmission has ended
successfully.

No action.

TX ERROR
PRESS STOP

Transmission was
unsuccessful.

Press STOP and repeat
transmission.

RX COMPLETED!

Document has been
received correctly.

No action.

RX ERROR
PRESS STOP

The document reception was
unsuccessful.

Press STOP.

TX INTERRUPTED
PRESS STOP

Procedure interrupted by user. Press STOP.

RX INTERRUPTED
PRESS STOP

Procedure interrupted by user. Press STOP.

AUTOREDIAL nnn

Fax is redialling to get a
connection.

No action.

DOCUMENT READY

Document correctly inserted.

No action.

LIFT HANDSET

Displayed on receiving a
phone call.

Lift handset and answer.

OFF HOOK

Following a telephone call.

Replace the telephone handset.

NOT PROGRAMMED

Displayed when you choose
a one-touch key or Quickdial
code that has not been
programmed.

Program the one-touch key or
Quickdial code.

Help

MESSAGE

INTERPRETATION

ACTION

LINE ON HOLD
PRESS HOLD

Line has been put on hold
during telephone connection.

Press hold to restore normal
operating mode.

TX POLL ERR
PRESS STOP

Polling transmission
unsuccessful.

Press STOP and reset
polling TX.

RX POLL ERR
PRESS STOP

Polling reception unsuccessful. Press STOP and reset
polling RX.

Transmission report messages
02: IMPOSSIBLE
CONNECTION

Line tone is not detected
or the machine is receiving
incorrect tones.

Make sure the fax is connected
correctly to the telephone line
and that the telephone handset
has not been lifted. Contact the
receiving party and retry.

03: RECEIVER DOES NOT
ANSWER

Remote fax machine not
answering.

Contact destination party.

04: ERRORS WHILE
TRANSMITTING RESEND
FROM PAGE nn

Error has been detected
during transmission (nn = the
page number on which the
error was detected).

Repeat transmission from
the page indicated on the
transmission report.

05: RESEND PAGES
nn,.......nn

Certain pages have been
received unclearly on the
remote fax machine (nn=page
number on which error is
detected.

Re-transmit the pages shown
on the transmission report.

06: LINE ENGAGED

Engaged tone detected before Redial.
or after dialling.

07: DOCUMENT
TOO LONG

Time taken for
transmission exceeds
permitted limits.

Divide the document.

42

Help

MESSAGE

INTERPRETATION

ACTION

08: CHECK THE
DOCUMENT

Scanning error during
document transmission.

Remove document from
automatic document feeder and
re-insert it before attempting
another transmission.

09: TX INTERRUPTED
WITH STOP

User has pressed STOP
to interrupt the procedure.

No action.

13: ERROR WHILE
POLLING

Remote fax machine is
Check with the other party.
without a document for polling
transmission.

16: POWER FAILURE
ON PAGE (NN)

Transmission unsuccessful
due to power failure.

Re-transmit the document
starting from page indicated
by (nn).

Journal report messages
MESSAGE IN “RESULT”
FIELD

43

INTERPRETATION

ACTION

02

Fax machine does not detect
line tone or receives incorrect
signals.

Check that the machine is
connected correctly to the line
and that the handset is on the
hook. Contact other party and
retry connection.

03

No answer from remote fax.

Contact other party.

04

Anomaly was detected during
transmission (nn = page
number on which error
occurred).

Repeat transmission starting
from page shown in PAGE field.

05

Unclear reception of certain
pages by remote fax.

Repeat transmission.

07

Document is too long,
transmission time exceeds
permitted limit.

Divide document.

Help

MESSAGE IN “RESULT”
FIELD

INTERPRETATION

ACTION

08

Optical scanner could not
read document.

Remove document from the
automatic document feeder
and re-insert it before
repeating transmission.

09

User has pressed STOP
during procedure.

No action.

10

Fax has detected anomaly
during reception.

Contact other party and ask
them to repeat transmission.

11

Printer anomaly during
Remedy problem and wait until
reception. The rest of the
the memorised document has
document is stored in the
been printed.
memory but memory capacity
was exhausted before the
end of the procedure.

13

Remote fax has no document
for polling transmission.

Contact other party.

16

Power failure during
transmission or reception.

In the case of transmission,
repeat from the page
indicated (nn).

44

Help

MESSAGE IN “RESULT”
FIELD

INTERPRETATION

OK

Successful transmission.

No action.

(OK)

Errors detected during
reception.

Check quality of received
document printing.

OCC

Engaged tone detected before
or after dialling.

Repeat transmission.

MESSAGE IN “TYPE” FIELD

45

ACTION

INTERPRETATION

TX

Transaction is a transmission.

TX ECM

Transaction is a transmission with ECM error
correction.

RX

Transaction is a document reception.

RX ECM

Transaction is a document reception with ECM
error correction.

TX POLL

Transaction is a polling transmission.

TX POLL ECM

Transaction is a polling transmission with ECM
error correction.

RX POLL

Transaction is a polling reception.

RX POLL ECM

Transaction is a polling reception with ECM
error correction.

RD READ ECM

Procedure is a reception from a telediagnostic
centre with ECM error correction. During the
reception the telediagnostic centre has read
your fax machine’s set-up data.

RD SET ECM

Procedure is a reception from remote
diagnostic centre with ECM error correction.
During reception the telediagnostic centre
transmitted set-up data to your fax machine.

Technical

Technical Specifications and General Characteristics

REN

Desktop transceiving unit
LCD (16 + 16 characters)
G3 CCITT
Horizontal scanning:
Vertical scanning:Standard 3.85 lines/mm
9600/7200/4800/2400 bps
MH, MR, Proprietary
CCD
10 sheets of A4, A5, Letter, Legal
Plain paper with bubble ink jet technology
208mm
A4 (210mm x 297 mm), Letter, Legal
Plain paper sheet feeder
(70 sheets of 70-90gsm paper)
3

Dimensions
WIDTH
WEIGHT

324 mm
6.3 kg

MODEL
DISPLAY
COMPATIBILITY
RESOLUTION
MODEM SPEED
DATA COMPRESSION
SCANNING METHOD
AUTOMATIC DOCUMENT FEEDER
PRINTING SYSTEM
MAX. PRINTING WIDTH
PRINTING PAPER
PAPER FEED

Electrical characteristics
POWER SUPPLY
POWER CONSUMPTION
STAND-BY
TRANSMISSION
RECEPTION
COPYING
Environmental conditions
TEMPERATURE

RELATIVE HUMIDITY
(without condensation)

DEPTH
HEIGHT

8 pixels/mm
Fine 7.7 lines/mm

325 mm (421mm max.)
140.5 mm (230mm max.)

230 VAC, 50Hz
14W
25W
20W
25W

5°C (operating) +35°C
-15°C to +45°C (transport)
0°C to +45°C (storage)
15% - 85% (operating, storage and non-operating)
5% - 95% (transport)

46

Technical

Technical information
Choosing a position
Your DF450 should be kept clear of dust, moisture, high
temperature and vibration and should not be exposed to direct
sunlight. Don’t install it close to radiators or air-conditioning
outlets or in excessively warm, humid or dusty places.

You may connect it:
• to direct exchange lines:
• to extensions with new plug and socket arrangements provided
with these direct exchange lines;
• to compatible switchboards.

Warning
The apparatus is only designed to be operated in a normal office
or domestic environment where the relative humidity does not
exceed 60%. It should not be used in bathrooms or near water.

You may NOT connect it:
• to shared service (party) lines.

Connecting to the UK network
DF450 is tested and approved for connection to the UK network,
provided that it is used in accordance with the guidelines in this
booklet.
Approval number
BABT Certificate Number/Approval Number for the DF450
503727 APPROVED for connection to telecommunication
systems specified in the instructions for use subject to conditions
set out in them. CE compliant to 89/336/CEE (EMC Directive)
Approval for use
This apparatus has been approved for use with the following
facilities:
Storage of telephone numbers for retrieval by a predetermined
code. (If problems occur, verify stored number).
Automatic call initiation.
Use on a PBX which returns secondary proceed indication.
Operation in the presence or absence of initial or secondary
proceed indication.
Automatic dialling facilities.
Automatic storage of last number dialled.
Automatic repeat attempt facilities.
Auto clear from the originating end.
Series connection facility.
Call progress monitor.

47

The connection to the telecommunication system must be
unplugged before the earth is disconnected. The connection to
the telecommunication system must not be hardwired.
This apparatus may be used on telecommunications systems
employing loop disconnect or MF signalling.
Any other usage will invalidate the approval of the apparatus if, as
a result, it then ceases to conform to the standards against which
approval was granted.
How many phones you can have
Your exchange line provides only a small current to make your
telephone ring. Although you may have any number of sockets it
is important to limit the number of telephones and other items of
apparatus connected to the line by these sockets. This ensures
that each telephone will receive enough current to ring.
Every telephone or item of apparatus has a Ringer Equivalence
Number (REN)
In most cases a standard line should provide enough current for
two or more telephones or items of apparatus, if the RENs add up
to no more than 4.
DF450 has a REN of 3. Any telephone provided by BT may be
assumed to have a REN of 1 unless otherwise stated on the base.
Even where the number of telephones has been limited, there is
no guarantee that the different types of telephone on the same
line will ring.

Technical

Voltage drop
The voltage drop introduced by the apparatus between the PSTN
and the associated telephone/answering machine is 0.4 Volts at
40mA dc.
The introduction of this voltage drop may occasionally cause
difficulties in making calls from the associated telephone or
problems in telephone conversations being experienced by both
parties to the call.
While operation may be possible initially, changes to or
modernisation of the network taking place in the normal course
of events may result in the apparatus being connected to a
network service with which it is not designed to be compatible.
Failure of the apparatus to work under these circumstances may
not be the responsibility of the network operator.

Safety warning
Interconnection circuits should be such that the equipment
continues to comply with the requirements of 4.2 of EN 41003 for
TNV circuits and 2.3 of EN 60950 for SELV circuits, after making
connections between circuits.
Interconnection directly, or by way of other apparatus, of ports
marked Safety Warning. See instructions for use. Ports marked
or not so marked may produce hazardous conditions on the
network. Advice should be obtained from a competent engineer
before such a connection is made.

In the unlikely event of any such problems occurring, the user
should contact the supplier or maintainer of the apparatus.
Difficulty may be experienced when making calls from other
apparatus. Such difficulties may include:
• difficulties in making a call;
• problems in telephone conversation being experienced by both
parties to the call.
Note - The definition of a RBS (Relevant Branch System) from
PSTN lines is given in BS6789 section 6.1 (1986) clause 2.4
Connecting to switchboards
Your DF450 is approved only for use with a compatible
switchboard including those which do not provide secondary
proceed indication.
If you do have a compatible switchboard, it cannot be guaranteed
that the DF450 will operate correctly under all possible
conditions of connection.
If you have any difficulties, contact BT on
Freefone 0800 800 152.

48

Index

Index
Access codes
Additional features
Answer machine/fax mode
Answer machine use
Attachments
Automatic document feeder
Automatic print-outs
Automatic RX
Automatic sheet feeder
Beeper
BT socket
Capital letters
Cleaning
Clear button
Connecting - your DF450
telephone
answering machine
Contrast button
Copying
Customer help line
Date and time setting
Delayed TX
Delaying a fax
Diagnostics
Dialling
- fax numbers
- telephone numbers
Direct exchange connection
Display messages

49

32
25
18
18
6
8
26
18
7
30
5
22
35, 36
21
5
11
11
25
16
3
11
16
16
33
15
18
31
40

Document jam
Document memory
Error correction mode (ECM)
Error light
External button
Fax monitor
Fine resolution
Half tones resolution
Header position
Help
Hold button
Ink cartridge fitting
Installation parameters
Journal report messages
Last number redial
Line cord - connecting
Line monitor
Loading a document
Loading paper
Mains power
Maintenance
Manual dialling
Manual reception
Memory
- back-up
- document
- names and numbers
Monitor - speaker volume
Name and fax number setting

37
38
32
38
32
25
25
25
13
36
18
34
27
43
15
5
25
14
9
6
34
15
17
13
38
21
25
12

Index

Normal dialling
One-touch dialling
One-touch number storing
Optical scanner
Paper
Paper jam
Paper size adjustment
Pause button
PBX - connecting to
Phone calls
Phone/fax RX
Polling
Power failure - memory back-up
- report
Print cartridge installation
Print cartridge replacements
Print cartridge life
Print head fitting
Print outs
Private switchboard connection
Pulse dialling
Quickdial number storing
Quickdialling
Received document tray
Receiving a fax
Receiving with an
answering machine
Reception modes
Redial
Remote diagnostics
REN
Replacing
- ink cartridge
- paper
- print head

15
15
21
35
9
37
28
31
31
18
17
20
13, 38
26
9
38
38
34
26
31
31
23
15
6, 7, 8
16
18
17
15
33
47
34
9
34

Reports
26
Resolution
25
RX mode
17
Scanner - cleaning
35
Sending a fax
15
Sent document tray
7
Setting time and date
11
Settings
- print-out
27
Speed
33
Silence lapse time
30
STD resolution
25
Storing names and numbers
- one touch
21
- Quickdial
23
- your name & number 12
Surplus setting
29
Switchboard - connecting to
31
Symbols
13, 22, 24
Technical specifications
46
TAD/fax RX
18
Telephone line cord
5
Time and date
11
Tone dialling
31
Transmission report messages
42
Transmitting - see sending
15
Technical information
46
Using your DF450
14
Volume setting - Beeper
30
Volume setting - Speaker
25
Warranty
38
TAD/Fax RX
18
Telephone line cord
5
Time and date
11
Tone dialling
31

50

Index

Transmission report messages
Transmitting - see sending
Technical information
Technical specification
Using your DF450
Volume setting - beeper
Volume setting - speaker
Warranty

51

42
15
47
46
14
30
25
38

Offices in Europe, North America,
Japan and Asia Pacific.
The telecommunications services described in this publication
are subject to availability and may be modified from time to time.
Services and equipment are provided subject to British
Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of any contract.
© British Telecommunications plc 1996.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Printed in Thailand. Issue No.2 (10/96).
Designed by The Art & Design Partnership Limited.

CE compliant to 89/336/EEC
(EMC Directive) & 73/23/EEC
(Low Voltage Directive)

APPROVED for connection to
telecommunication systems specified
in the instructions for use subject to
the conditions set out in them



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