Oki C5250 User Manual

C5250

User’s Guide

P

REFACE

Every effort has been made to ensure that the information in this document is
complete, accurate, and up-to-date. The manufacturer assumes no responsibility
for the results of errors beyond its contro l. The manufacturer also cannot guarantee
that changes in software and equipment made by other manufacturers and referred
to in this guide will not affect the applicability of the information in it. Mention of
software products manufactured by other companies does not necessarily
constitute endorsement by the manufacturer.

While all reasonable efforts have been made to make this document as accurate
and helpful as possible, we make no warranty of any kind, expressed or impl ied, as
to the accuracy or completeness of the information contained herein.

The most up-to-date drivers and manuals are available from the Oki Europe
website:

http://www.okieurope.com

Copyright © 2005. All rights reserved.

Oki and Microline are registered trademarks of Oki Electric Industry Company, Ltd.

Energy Star is a trademark of the United States Environmental Protection Agency.

Hewlett-Packard, HP, and LaserJet are registered trademarks of Hewlett-Packard
Company.

Microsoft, MS-DOS and Windows are registered trademarks of Microsoft
Corporation.

Apple, Macintosh, Mac and Mac OS are registered trademarks of Apple Computer.

Other product names and brand names are registered trademarks or trademarks of
their proprietors.

As an Energy Star Program Participant, the manufacturer has
determined that this product meets the Energy Star guidelines for
energy efficiency.

This product complies with the requirements of the Council
Directives 89/336/EEC (EMC) and 73/23/EEC (LVD) as amended
where applicable on the approximation of the laws of the member
states relating to electromagnetic compatibility and low voltage.

Preface> 2

CONTENTS

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Printer overview. . . . . . . . . . . . . . . . . . . . . . . . . . 7

Front view. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Rear view . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Changing the display language . . . . . . . . . . . . . . . 9

Paper recommendations. . . . . . . . . . . . . . . . . . . . 10

Cassette trays . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Multi purpose tray . . . . . . . . . . . . . . . . . . . . . . . 11

Face down stacker . . . . . . . . . . . . . . . . . . . . . . . 12

Face up stacker . . . . . . . . . . . . . . . . . . . . . . . . . 12

Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Loading paper. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Cassette trays . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Multi purpose tray . . . . . . . . . . . . . . . . . . . . . 16

Printer settings in Windows . . . . . . . . . . . . . . . . . 17

Printing preferences in Windows applications. . . . . 17

Setup tab . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Job options tab . . . . . . . . . . . . . . . . . . . . . . . 19

Colour tab. . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Setting from Windows control panel . . . . . . . . . . . 21

General tab . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Advanced tab . . . . . . . . . . . . . . . . . . . . . . . . 22

Device options tab . . . . . . . . . . . . . . . . . . . . . 24

Colour printing . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Factors that affect the appearance of prints. . . . . . 25

Tips for printing in colour . . . . . . . . . . . . . . . . . . 27

Printing photographic images . . . . . . . . . . . . . 27

Printing from office applications. . . . . . . . . . . . 27

Printing specific colours (e.g. a company logo) . 27

Adjusting the brightness or intensity of a print . 27

Accessing the colour matching options . . . . . . . . . 28

Setting the colour matching options . . . . . . . . . . . 28

Using the colour swatch feature . . . . . . . . . . . . . . 30

Using the Colour Correct Utility . . . . . . . . . . . . . . 31

Menu functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Information menu . . . . . . . . . . . . . . . . . . . . . . . 33

Print menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Media menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Preface> 3

Colour menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

System configuration menu . . . . . . . . . . . . . . . . . 39

USB menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Network menu . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Memory menu . . . . . . . . . . . . . . . . . . . . . . . . . . 41

System adjustment menu . . . . . . . . . . . . . . . . . . 42

Maintenance menu . . . . . . . . . . . . . . . . . . . . . . . 42

Usage menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Replacing consumable items . . . . . . . . . . . . . . . . 44

Consumable order details . . . . . . . . . . . . . . . . . . 45

Toner cartridge replacement . . . . . . . . . . . . . . . . 46

Image drum replacement . . . . . . . . . . . . . . . . . . 52

Replacing the belt unit . . . . . . . . . . . . . . . . . . . . 57

Fuser replacement . . . . . . . . . . . . . . . . . . . . . . . 60

Cleaning the LED head . . . . . . . . . . . . . . . . . . . . 63

Installing upgrades . . . . . . . . . . . . . . . . . . . . . . . 64

Duplex unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Memory upgrade . . . . . . . . . . . . . . . . . . . . . . . . 66

Second paper tray . . . . . . . . . . . . . . . . . . . . . . . 69

Adjusting Windows printer drivers . . . . . . . . . . . . 70

Clearing paper jams . . . . . . . . . . . . . . . . . . . . . . . 71

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Oki contact details . . . . . . . . . . . . . . . . . . . . . . . . 82

Preface> 4

NOTES, CAUTIONS AND WARNINGS

NOTE

A note appears in this manual like this. A note provides
additional information to supplement the main text which may
help you to use and understand the product.

CAUTION!

A caution appears in this manual like this. A caution
provides additional information which, if ignored, may
result in equipment malfunction or damage.

WARNING!

A warning appears in this manual like this. A warning
provides additional information which, if ignored, may
result in a risk of personal injury.

Preface> 5

I

NTRODUCTION

Congratulations on buying this Oki colour printer. Your new
printer is designed with advanced features to give you clear,
vibrant colour prints and crisp black and white pages at high
speed on a range of print media for the office.

Your printer includes these features:

> Up to 16 pages per minute in full colour for fast printing of

high impact colour presentations and other documents;

> Up to 24 pages per minute in black and white for fast and

efficient printing of all general purpose documents not
requiring colour;

> 1200 x 600 dpi (dots per inch) print resolution for high

quality image production showing the finest detail;

> Single Pass Colour Digital LED technology for high speed

processing of your printed pages;

> 10Base-T and 100Base-TX network connection lets you

share this valuable resource among users on your office
network;

> Photo Enhance mode to improve printouts of photographic

images;

> “Ask Oki” – a brand new, user-friendly function that gives

a direct link from your printer driver screen (but not
illustrated in this guide) to a dedicated web site specific to
the exact model you are using. This is where you’ll find all
the advice, assistance and support you could need to help
you get the best possible results from your Oki printer.

Additionally, the following optional features are also available:

> Automatic two-sided (duplex) printing for economical use

of paper and compact printing of larger documents
(standard on the C5250dn);

> Additional paper tray for loading a further 530 sheets to

minimise operator intervention, or different paper stocks
for letterhead stationery, alternative paper sizes or other
print media;

Introduction> 6

> Additional memory allows printing of more complex

pages, including two-sided and booklet pages with the
optional duplex unit.

P

RINTER OVERVIEW

F

RONT VIEW

1

7

2

7

6

3

1. Output stacker, face
down.

Standard printed copy
delivery point. Holds up to
250 sheets at 80g/m².

2. Operator panel.

Menu driven operator
controls and LCD display
panel.

3. Paper tray.

Standard blank paper tray.
Holds up to 300 sheets of
80g/m² paper.

4. Multi purpose feeder.

Used for feeding heavier paper stocks,
envelopes and other special media. Also for
manual feeding of single sheets when
required.

5. ON/OFF switch.

6. Front Cover release (lift).

7. Multi purpose feeder release (2) (press).

5

4

The LCD display language can be changed to show any of 14
different languages. (See “Changing the display language” on
page 9.)

Introduction> 7

R

EAR VIEW

This view shows the connection panel, the rear output stacker
and the location of the optional duplex (two-sided printing) unit.

13

10

11

9

12

8

8. AC power socket.

9. USB interface.

10. Network status lights.

* The Network Interface has a protective “plug” which must be removed before

connection can be made.

11. Network interface.*

12. Location of optional duplex unit.

13. Rear, face up, 100 sheet stacker.

When the rear paper stacker is folded down, paper exits through
the rear of the printer and is stacked here face up. This is mainly
used for heavy print media. When used in conjunction with the
multi purpose feed tray, the paper path through the printer is
essentially straight. This avoids bending the paper around curves
in the paper path and enables feeding of up to 203g/m² media.

Introduction> 8

C

HANGING THE DISPLAY LANGUAGE

The language used by your printer for display messages and for
report printing can be changed quickly and easily as follows:

READY

ATTENTION

BACK

MENU

ENTER

ON LINE

CANCEL

1. Press the + key repeatedly to access the System

Configuration Menu.

2. Press the ENTER key to enter the System Configuration

Menu.

3. Press the – key to move directly to the last item in this

menu: LANGUAGE.

4. Press ENTER to change this setting.

5. Use the +/– keys to move in either direction through the

list of available languages until the language you want is
displayed.

6. Press the ENTER key to select this language.

7. Press the ON LINE key to exit the menu system and return

the printer to standby.

The LCD display language can be changed to any of these
languages:

English Norwegian

German Danish

French Dutch

Italian Turkish

Spanish Portuguese

Swedish Polish

Russian Greek

Introduction> 9

P

APER RECOMMENDATIONS

Your printer will handle a variety of print media, including a range
of paper weights and sizes, transparencies and envelopes. This
section provides general advice on choice of media, and explains
how to use each type.

The best performance will be obtained when using standard
75~90g/m² paper designed for use in copiers and laser printers.
Suitable types are:

• Arjo Wiggins Conqueror Colour Solutions 90g/m²;

• Colour Copy by Neusiedler.

Use of heavily embossed or very rough textured paper is not
recommended.

Pre-printed stationery can be used, but the ink must not offset when
exposed to the high fuser temperatures used in the printing
process.

Envelopes should be free from twist, curl or other deformations.
They should also be of the rectangular flap type, with glue that
remains intact when subjected to hot roll pressure fusing used in
this type of printer. Window envelopes are not suitable.

Transparencies should be of the type designed for use in copiers
and laser printers. We strongly recommend Oki transparencies
(Order No. 01074101). In particular, avoid office transparencies
designed for use by hand with marker pens. These will melt in the
fuser and cause damage.

Labels should also be of the type recommended for use in copiers
and laser printers, in which the base carrier page is entirely
covered by labels. Other types of label stock may damage the
printer due to the labels peeling off during the printing process.
Suitable types are:

• Avery White Laser Label types 7162, 7664, 7666 (A4),
or 5161 (Letter);

• Kokuyo A693X series (A4) or A650 (B5).

Paper recommendations> 10

C

ASSETTE TRAYS

SIZE DIMENSIONS WEIGHT (G/M²)

A6 (Tray 1
only)

A5 148 x 210mm
B5 182 x 257mm
Executive 184.2 x 266.7mm
A4 210 x 297mm
Letter 215.9 x 279.4mm
Legal 13in. 216 x 330mm
Legal 13.5in. 216 x 343mm
Legal 14in. 216 x 356mm

105 x 148mm

Light 64-74g/m²

Medium 75-90g/m²

Heavy 91-120g/

m²

Ultra heavy121-176g/

m²
(Tray 2
only)

If you have identical paper stock loaded in another tray (2nd tray
if you have one, or multi purpose tray) you can have the printer
automatically switch to the other tray when the current tray runs
out of paper. When printing from Windows applications, this
function is enabled in the driver settings. (See “Printer Settings in
Windows” later in this guide.) When printing from other systems,
this function is enabled in the Print Menu. (See “Menu Functions”
later in this guide.)

M

ULTI PURPOSE TRAY

The multi purpose tray can handle the same sizes as the cassette
trays but in weights up to 203g/m². For very heavy paper stock
use the face up (rear) paper stacker. This ensures that the paper
path through the printer is almost straight.

The multi purpose tray can feed paper widths as small as 100mm
and lengths up to 1200mm (banner printing).

For paper lengths exceeding 356mm (Legal 14in.) use paper
stock between 90g/m² and 128g/m² and the face up (rear) paper
stacker.

Use the multi purpose tray for printing on envelopes and
transparencies. Up to 50 sheets of transparencies or 10
envelopes can be loaded at one time, subject to a maximum
stacking depth of 10mm.

Paper or transparencies should be loaded print side up and top
edge into the printer. Do not use the duplex (two-sided printing)
function.

Paper recommendations> 11

F

ACE DOWN STACKER

The face down stacker on the top of the printer can hold up to
250 sheets of 80g/m² standard paper, and can handle paper
stocks up to 176g/m². Pages printed in reading order (page 1
first) will be sorted in reading order (last page on top, facing
down).

F

ACE UP STACKER

The face up stacker at the rear of the printer should be opened
and the tray extension pulled out when required for use. In this
condition paper will exit via this path, regardless of driver
settings.

The face up stacker can hold up to 100 sheets of 80g/m²
standard paper, and can handle stocks up to 203g/m².

Always use this stacker and the multi purpose feeder for paper
stocks heavier than 176g/m².

D

UPLEX UNIT

This option provides automatic two-sided printing on the same
range of paper sizes as tray 2 (i.e. all cassette sizes except A6),
using paper stocks from 75-105g/m².

NOTE

The duplex unit comes as standard with C5250dn.

Paper recommendations> 12

L

OADING PAPER

C

ASSETTE TRAYS

1. Remove the paper tray from the printer.

Fan the paper to be loaded at the edges (1) and in the

2.

middle (2) to ensure that all sheets are properly separated,
then tap the edges of the stack on a flat surface to make it
flush again (3).

123

Loading paper> 13

3. Load letter headed paper face down and top edge towards
the front of the printer, as shown.

21

4. Adjust the rear stopper (1) and paper guides (2) to the
size of paper being used.

To prevent paper jams:

• Do not leave space between the paper and the guides

and rear stopper.

• Do not overfill the paper tray. Capacity depends on the

type of paper stock.

• Do not load damaged paper.

• Do not load paper of different sizes or types at the

same time.

• Do not pull the paper tray out during printing (except

as described below for the 2nd tray).

• Close the paper tray gently.

5. If you have two trays and you are printing from the 1st
(upper) tray, you can pull out the 2nd (lower) tray during
printing to reload it. However, if printing from the 2nd
(lower) tray, do not pull out the 1st (upper) tray. This will
cause a paper jam.

6. For face down printing, make sure the face up (rear)
stacker (3) is closed (the paper exits from the top of the

Loading paper> 14

printer). Stacking capacity is approximately 250 sheets,

4

depending on paper weight.

7. For face up printing, make sure the face up (rear)
stacker (3) is open and the paper support (4) is extended.
Paper is stacked in reverse order and tray capacity is
approximately 100 sheets, depending on paper weight.

8. Always use the face up (rear) stacker for heavy paper
(card stock etc.).

3

CAUTION!

Do not open or close the rear paper exit while printing as
it may result in a paper jam.

Loading paper> 15

M

ULTI PURPOSE TRAY

1. Open the multi purpose tray and press gently down on the

paper platform (1) to ensure it is latched down.

1

2

3

2. Load the paper and adjust the paper guides (2) to the size
of paper being used.

•For single-sided printing on headed paper load the

paper into the multi purpose tray with pre-printed side
up and top edge into the printer.

•For two-sided (duplex) printing on headed paper load

the paper with pre-printed side down and top edge
away from the printer. (Optional duplex unit must be
installed for this function.)

• Envelopes should be loaded face up with top edge to

the left and short edge into the printer. Do not select
duplex printing on envelopes.

• Do not exceed the paper capacity of about 50 sheets or

10 envelopes. Maximum stacking depth is 10mm.

3. Press the tray latch button (3) inwards to release the
paper platform, so that the paper is lifted and gripped in
place.

Set the correct paper size for the multi purpose tray in the Media
Menu (see “Menu Functions”).

Loading paper> 16

P

RINTER SETTINGS IN

Your printer’s operator panel menus provide access to many
options.

The Windows printer driver also contains settings for many of
these items. Where items in the printer driver are the same as
those in the operator panel menus, and you print documents
from Windows, the settings in the Windows printer driver will
override those items in the operator panel menus.

The illustrations in this chapter show Windows XP. Other
Windows versions may appear slightly different, but the
principles are the same.

P

RINTING PREFERENCES IN WINDOWS APPLICATIONS

When you choose to print your document from a Windows
application program a Print dialogue box appears. This dialogue
usually specifies the name of the printer on which you will print
your document. Next to the printer name is a Properties button.

W

INDOWS

When you click Properties a new window opens which contains a
short list of the printer settings available in the driver, which you
can choose for this document. The settings available from within
your application are only those which you may want to change for
specific applications or documents. Settings you change here will
usually only last for as long as the particular application program
is running.

Printer settings in Windows> 17

S

ETUP TAB

When you click the Properties
button from your application’s
Print dialogue, the driver window
opens to allow you to specify your

1
2
3

printing preferences for the
current document.

Paper size should be the

1.

same as the page size of

4

5

6

your document (unless you
wish to scale the printout to

7

fit another size), and should
also be the same as the size
of paper you will feed into the printer.

2. You can choose the source of the paper to feed, which
may be Tray 1 (the standard paper tray), Tray 2 (if you
have the optional 2nd paper tray installed) or the multi
purpose feeder. You can also click on the appropriate part
of the screen graphic to select your preferred tray.

3. The setting for paper weight should match the type of
paper on which you intend to print.

4. A variety of document finishing options can be selected,
such as normal one page per sheet, or N-up (where N can
be any number up to 16) for printing scaled down pages
at more than one page per sheet. Booklet printing prints
two pages per sheet on each side of the paper so that
when folded they make up a booklet. Booklet printing
requires the duplex unit to be installed in your printer.

Poster printing will print large pages as tiles spread over
multiple sheets.

5. For two-sided printing, you can choose to flip the page by
the long edge or the short edge. Of course, this requires
that a duplex unit be installed in your printer.

6. If you have changed some printing preferences before and
saved them as a set, you can recall them to avoid having
to set them individually each time you need them.

7. A single on-screen button restores the default settings.

Printer settings in Windows> 18

JOB

OPTIONS TAB

3

4

1

2

5

7

8

1. The output resolution of the printed page can be set as
follows.

• The highest quality setting prints at 1200 x 600dpi.

This option requires the most printer memory and
takes the longest to print.

• The normal setting prints at 600 x 600dpi and is

adequate for all but the most discerning applications.

• The draft setting prints at 300 x 300dpi and is suitable

for draft documents, where print quality is less critical.

2. You can print watermark text behind the main page
image. This is useful for marking documents as draft,
confidential, etc.

3. You can select up to 999 copies to print consecutively,
although you will need to top up the paper tray during
such a long print run.

4. Page orientation can be set to either portrait (tall) or
landscape (wide).

5. You printed pages can be scaled to fit larger or smaller
stationery.

6. Clicking the Advanced button gives you access to further
settings. For example, you can elect to have black areas
printed using 100%K toner (a more matte appearance).

7. A single on-screen button restores the default settings.

8. The quality of photographic images can be improved.

Printer settings in Windows> 19

C

4

OLOUR TAB

1

2

3

5

1. Control over the colour output of your printer may be
performed automatically, or for advanced control, by
manual adjustment. The automatic setting will be
appropriate in most cases. The other options in this
window only become visible when you select a choice
other than Auto. For greyscale printing, the printer runs at
24ppm and all pages are printed in black and white.

2. You can choose from a range of colour matching options,
depending on the image source for your document. For
example, a photograph taken on a digital camera might
require different colour matching to a business graphic
created in a spreadsheet application. Again, for most
general purpose use, automatic is the best choice.

3. Printed output may be made lighter or darker, or the
colours made more saturated and vibrant as required.

4. Black areas may be printed using 100% cyan, magenta
and yellow (composite black), giving a more glossy
appearance, or using only black toner (true black), giving
a more matte appearance. Choosing the automatic setting
allows the driver to make the most appropriate choice
depending on image content.

5. A single on-screen button restores the default settings.

Printer settings in Windows> 20

S

ETTING FROM WINDOWS CONTROL PANEL

When you open the driver properties window directly from
Windows, rather than from within an application program, a
somewhat more extensive range of settings is provided. Changes
made here will generally affect all documents you print from
Windows applications, and will be remembered from one
Windows session to the next.

G

ENERAL TAB

1

23

1. This area lists some of the main features of your printer,
including optional items, such as duplex (two-sided)
printing.

2. This button opens the same windows as described earlier
for items which can be set from within application
programs. Changes you make here, however, will become
the new default settings for all Windows applications.

3. This button prints a test page to ensure that your printer
is working.

Printer settings in Windows> 21

A

DVANCED TAB

1
2

3

4

5

6

7

8

9

10

11

12

1. You can specify which times of day your printer will be
available.

2. Indicates current priority, from 1 (lowest) to 99 (highest).
Highest priority documents will print first.

3. Specifies that documents should be spooled (stored in a
special print file) before being printed. The document is
then printed in the background, allowing your application
program to become available more quickly.

4. This specifies that printing should not start until the last
page has been spooled. If your application program needs
a lot of time for further computation in the middle of
printing, causing the print job to pause for more than a
short period, the printer could prematurely assume that
the document has finished. Selecting this option would
prevent that situation, but printing will be completed a
little later, as the start is delayed.

5. This is the opposite choice to the one above. Printing
starts as soon as possible after the document begins
spooling.

6. This specifies that the document should not be spooled,
but printed directly. Your application will not normally be
ready for further use until the print job is complete. This
requires less disk space on your computer, since there is
no spool file.

Printer settings in Windows> 22

7. Directs the spooler to check the document setup and
match it to the printer setup before sending the document
to print. If a mismatch is detected, the document is held
in the print queue and does not print until the printer
setup is changed and the document restarted from the
print queue. Mismatched documents in the queue will not
prevent correctly matched documents from printing.

8. Specifies that the spooler should favour documents which
have completed spooling when deciding which document
to print next, even if completed documents are lower
priority than documents which are still spooling. If no
documents have completed spooling, the spooler will
favour larger spooling documents over shorter ones. Use
this option if you want to maximise printer efficiency.
When this option is disabled the spooler chooses
documents based only on their priority settings.

9. Specifies that the spooler should not delete documents
after they are completed. This allows documents to be re
submitted to the printer from the spooler instead of
printing again from the application program. If you use
this option frequently it will require large amounts of disk
space on your computer.

10. Specifies whether advanced features, such as booklet
printing, page order and pages per sheet, are available,
depending on your printer. For normal printing keep this
option enabled. If compatibility problems occur you can
disable the feature. However, these advanced options may
then not be available, even though the hardware might
support them.

11. This button provides access to the same setup windows as
when printing from applications. Changes made via the
Windows Control Panel become the Windows default
settings.

12. You can design and specify a separator page that prints
between documents. This is particularly useful on a
shared printer to help each user find their own documents
in the output stack.

Printer settings in Windows> 23

D

EVICE OPTIONS TAB

In this window you can select which optional upgrades are
installed on your printer. This is covered in more detail in the
section in this guide about installing upgrades.

Printer settings in Windows> 24

C

OLOUR PRINTING

The printer drivers supplied with your printer provide several
controls for changing the colour output. For general use the
automatic settings will suffice, providing reasonable default
settings that will produce good results for most documents.

Many applications have their own colour settings, and these may
override the settings in the printer driver. Please refer to the
documentation for your software application for details on how
that particular program’s colour management functions.

F

ACTORS THAT AFFECT THE APPEARANCE OF PRINTS

If you wish to manually adjust the colour settings in your printer
driver, please be aware that colour reproduction is a complex
topic, and there are many factors to take into consideration.
Some of the most important factors are listed below.

Differences between the range of colours
a monitor or printer can reproduce

> Neither a printer nor a monitor is capable of reproducing

the full range of colours visible to the human eye. Each
device is restricted to a certain range of colours. In
addition to this, a printer cannot reproduce all of the
colours displayed on a monitor, and vice versa.

> Both devices use very different technologies to represent

colour. A monitor uses Red, Green and Blue (RGB)
phosphors (or LCDs), a printer uses Cyan, Magenta,
Yellow and Black (CMYK) toner or ink.

> A monitor can display very vivid colours such as intense

reds and blues and these cannot be easily produced on
any printer using toner or ink. Similarly, there are certain
colours, (some yellows for example), that can be printed,
but cannot be displayed accurately on a monitor. This
disparity between monitors and printers is often the main
reason that printed colours do not match the colours
displayed on screen.

Viewing conditions

A print can look very different under different lighting conditions.
For example, the colours in a print may look different when

Colour printing> 25

viewed standing next to a sunlit window, compared to how they
look under standard office fluorescent lighting.

Printer driver colour settings

The driver settings for manual colour can change the appearance
of a print. There are several options available to help match the
printed colours with those displayed on screen.

Monitor settings

The brightness and contrast controls on your monitor can change
how your document looks on-screen. Additionally, your monitor’s
colour temperature influences how “warm” or “cool” the colours
look.

There are several settings found on a typical monitor:

> 5000k Warmest; yellowish lighting, typically used in

graphic art environments.

> 6500k Cooler; approximates daylight conditions.

> 9300k Cool; the default setting for many monitors

and television sets.

(k = degrees Kelvin, a measurement of temperature.)

How your software application displays colour

Some graphics applications such as Corel Draw or Adobe
Photoshop may display colour differently from “Office”
applications such as Microsoft Word. Please see your application’s
on-line help or user manual for more information.

Paper type

The type of paper used can also significantly affect the printed
colour. For example, a printout on recycled paper can look duller
than one on specially formulated glossy paper.

Colour printing> 26

T

IPS FOR PRINTING IN COLOUR

The following guidelines may help you to achieve good colour
output from your printer.

P

RINTING PHOTOGRAPHIC IMAGES

Use the Monitor (6500k) Perceptual setting.

If the colours look too dull, try the Monitor (6500k) Vivid or
Digital Camera settings.

P

RINTING FROM OFFICE APPLICATIONS

Use the Monitor (9300k) setting. This may help if you are having
problems with specific colours from applications such as Microsoft
Excel or Microsoft PowerPoint.

P

RINTING SPECIFIC COLOURS (E.G. A COMPANY LOGO

There are 2 utilities on your printer driver CD-ROM that can help
match specific colours:

Colour Correct Utility

Colour Swatch Utility

A

DJUSTING THE BRIGHTNESS OR INTENSITY OF A PRINT

)

If the print is too light/dark, you can use the Brightness control
to adjust it.

If the colours are too intense/not intense enough, use the
Saturation control.

Colour printing> 27

A

CCESSING THE COLOUR MATCHING OPTIONS

The colour matching options in the printer driver can be used to
help match your printed colours to the ones displayed on your
monitor or from some other source, such as a digital camera.

To open colour matching options
from the Windows Control Panel:

1. Open the Printers window
(called “Printers and Faxes”
in Windows XP).

2. Right-click the printer name
and choose Properties.

3. Click the Printing Preferences
button (1).

To open colour matching options from within a Windows
application:

1. Choose File—Print… from the application’s menu bar.

2. Click the Properties button next to the printer name.

S

ETTING THE COLOUR MATCHING OPTIONS

1. On the Colo ur tab select Advanced Colour for colour

matching.

1

Colour printing> 28

2. Choose the Manual colour setting and select from the
following options:

1

2

a

b

c

d

e

(a) Monitor (6500k) Perceptual

Optimised for printing photographs. Colours are
printed with emphasis on saturation.

(b) Monitor (6500k) Vivid

Optimised for printing photographs, but with even
more saturated colours than the Monitor (6500k)
Perceptual setting.

(c) Monitor (9300k)

Optimised for printing graphics from applications
such as Microsoft Office. Colours are printed with
emphasis on Lightness.

(d) Digital Camera

Optimised for printing photographs taken with a
digital camera.

Your results will vary depending on the subject and
the conditions under which the photograph was
taken.

(e) sRGB

The printer will try to reproduce the sRGB colour
space. This may be useful if colour matching from an
sRGB input device such as a scanner or digital
camera.

Colour printing> 29

U

SING THE COLOUR SWATCH FEATURE

To use the Colour Swatch feature, you must install the Colour
Swatch Utility. This is supplied on the CD-ROM that was supplied
with your printer.

The Colour Swatch function prints charts which contain a range
of sample colours. Note that this is not the full range of colours
that the printer can produce. Listed on each sample colour are
the corresponding RGB (Red, Green, Blue) values. This can be
used to pick specific colours in applications that allow you to
choose your own RGB values. Simply click the Colour Swatch
button (1) and choose from the options available.

1

An example of using the colour swatch function:

You wish to print a logo in a particular shade of red. The steps
you would follow are:

1. Print a colour swatch, then select the shade of red that
best suits your needs.

2. Take a note of the RGB value for the particular shade that
you liked.

3. Using your program’s colour picker, enter these same RGB
values, and change the logo to that colour.

The RGB colour displayed on your monitor may not necessarily
match what was printed on the colour swatch. If this is the case,
it is probably due to the difference between how your monitor
and printer reproduce colour. Here, it is unimportant since your
primary objective is to print the required colour.

Colour printing> 30

U

SING THE COLOUR CORRECT UTILITY

The Oki Colour Correct Utility is provided on your printer driver
CD-ROM. You must install it separately since it is not installed
along with the printer driver.

The Colour Correct utility has the following features:

> Microsoft Office palette colours can be individually

adjusted. This is useful if you want to change how a
specific colour is printed.

> Colours can be adjusted by changing Hue, Saturation and

Gamma. This is useful if you wish to change the overall
colour output.

Once these colour adjustments have been made, the new
settings can be selected from the printer driver Colour tab.

To select adjustments made with the Colour Correct Utility:

1. From your application program, click File and point to Print.

2. Click Properties. This displays the printer driver options.

3. Click the Colour tab.

4. Click Advanced Colour.

5. Click User Defined.

Select the colour adjustment you made with the Colour Correct
Utility.

Colour printing> 31

M

ENU FUNCTIONS

This section lists the menus accessed via the controls on the
printer’s operator panel and displayed in the LCD window.

It should be noted that many of these settings can be, and often
are, overridden by settings in the Windows printer drivers.
However, several of the driver settings can be left at “Printer
Setting”, which will then default to the settings entered in these
printer menus.

Factory default settings are shown in bold type in the following
tables.

In the normal operating condition, known as “standby,” the
printer’s LCD window will show “ONLINE.” In this condition, to
enter the menu system, press the +/– keys on the operator panel
to move up and down through the list of menus until the menu
you wish to view is displayed. The proceed as follows:

1. Press ENTER to enter the menu.

2. Use the +/– keys to move up and down through the items

in the menu. When the item you want to change is
displayed, press ENTER to edit that item. An asterisk (*)
appears next to the setting currently in effect.

3. Use the +/– keys to move up and down through the
available settings for this item, and press ENTER when the
setting you want is displayed. An asterisk (*) will appear
next to the setting, indicating that this setting is now in
effect.

4. Press BACK to move back to the list of menu items.

5. Do one of the following:

• Press BACK again to move up to the list of menus;

or…

• Press ON LINE to exit from the menu system and return

to standby.

Menu functions> 32

I

NFORMATION MENU

This menu provides a quick method of listing various items stored
within the printer.

INFORMATION MENU

ITEM ACTION EXPLANATION

PRINT MENU
MAP

DEMO1 EXECUTE Prints demo page.

P

RINT MENU

EXECUTE Prints complete menu listing with current

settings shown.

This menu provides adjustment of various print job related
functions.

PRINT MENU

ITEM SETTINGS EXPLANATION

COPIES 1-999 Enter the number of copies of a

PAPER FEED TRAY1

TRAY2
MP TRAY

AUTO TRAY
SWITCH

TRAY SEQUENCE DOWN

MP TRAY USAGE DO NOT USE

MEDIA CHECK ENABLE

ON/OFF Turns Auto Tray Switch function ON or

UP

PAPER FEED
TRAY

WHEN
MISMATCH

DISABLE

document to be printed from 1 to 999.
Selects the default tray for paper feed,

Tray 1 ( u p p e r ), Tray 2 ( l o wer, i f
installed) or MP Tray (multi purpose
tray).

OFF.
Select Tray Sequences of Auto Tray

Select and Auto Tray Switch

If a document to be printed demands a
paper size not installed in the selected
tray, the printer can automatically feed
from the multi purpose tray instead. If
this function is not enabled, the printer
will stop and request the correct size of
paper to be loaded.

Determines whether the printer check
the size of paper loaded matches that
required for the document sent to
print.

Menu functions> 33

PRINT MENU

ITEM SETTINGS EXPLANATION

MONO-PRINT
SPEED

AUTO SPEED

If the first page of a print job is only
black and white, the printer runs at
20ppm (pages per minute). When a
colour page is detected the printer
slows down to 16ppm for the rest of
that job.

MONO
24PPM

This setting operates in the same way
as AUTO SPEED, except that the printer
runs at 24ppm until a colour page is
detected. To achieve this speed the
printer requires an additional 10 – 20
seconds to warm up and 30 – 60
seconds to cool down when switching
to 16ppm for colour pages. This setting
is therefore most appropriate when the
majority of print jobs are entirely black
and white.

The printer runs at 16ppm for all print

COLOUR SPE
ED

jobs. This setting is most appropriate
when the majority of print jobs are in
colour.

The printer automatically switches
between 16ppm for each colour page

MIXED SPEE
D

and 20ppm for each black and white
page. When black and white pages are
printed, the 3 colour drums are
automatically lifted to maximize their
working life. This operation imposes a
10 – 20 second delay each time the
printer switches between colour and
black and white printing. However, the
30 – 60 second cool down delay
described for MONO 24ppm is avoided
by limiting black and white speed to
20ppm. This setting may be preferred
for mostly black and white printing with
some colour pages, or for
environments where print jobs consist
of all colour pages or all black and
white pages.

Menu functions> 34

M

EDIA MENU

This menu provides adjustment to suit a wide range of print
media.

MEDIA MENU

ITEM SETTINGS EXPLANATION

TRAY1
PAPERSIZE

TRAY1
MEDIATYPE

TRAY1
MEDIAWEIGHT

TRAY2
PAPERSIZE

TRAY2
MEDIATYPE

A4 / A5 / A6 / B5
LEGAL14
LEGAL13.5
LEGAL13
LETTER
EXECUTIVE
CUSTOM

PLAIN

LETTERHEAD
BOND
RECYCLED
CARDSTOCK
ROUGH

LIGHT (64-74g/m²)

MEDIUM

(75-90g/

m²)

HEAVY (91-120g/
m²)

A4 / A5 / B5 /
LEGAL14
LEGAL13.5
LEGAL13
LETTER
EXECUTIVE
CUSTOM

PLAIN

LETTERHEAD
BOND
RECYCLED
CARDSTOCK
ROUGH

Selects the size of paper loaded in
Tray 1 (upper tray if both trays
installed). For CUSTOM setting
see X-DIMENSION and Y­DIMENSION later in this table.

Selects the type of media loaded
in this tray. This will help the
printer to adjust its internal
operating parameters, such as
engine speed and fusing
temperature, to better
accommodate the media to be
fed. For example, letterhead may
benefit from a slightly lower
fusing temperature to ensure that
its ink does not offset.

Adjusts the printer for the weight
of paper stock loaded in thus tray.

Selects the size of paper loaded in
Tray 2 (lower) if installed. For
CUSTOM setting see X­DIMENSION and Y-DIMENSION
later in this table.

Selects the type of media loaded
in this tray.

Menu functions> 35

MEDIA MENU

ITEM SETTINGS EXPLANATION

TRAY2
MEDIAWEIGHT

LIGHT (64-74g/m²)
MEDIUM (75-90g/

Adjusts the printer for the weight

of paper stock loaded in this tray.
m²)
HEAVY (91-120g/
m²)

ULTRA HEAVY

(121-176g/m²)

MPT PAPERSIZE A4 / A5 / A6 / B5

LEGAL14
LEGAL13.5
LEGAL13
LETTER

Selects the size of paper to be fed

from the multi purpose tray. For

CUSTOM setting see X-

DIMENSION and Y-DIMENSION

later in this table.
EXECUTIVE
CUSTOM
COM-9 ENVELOPE
COM-10 ENVELOPE
MONARCH ENV
DL ENVELOPE
C5 ENVELOPE

MPT PAPERTYPE PLAIN

LETTERHEAD
TRANSPARENCY
LABELS
BOND
RECYCLED

Selects the type of media to be

fed from the multi purpose tray

so that the printer can adjust its

internal parameters to better

accommodate the selected type

of media.
CARD STOCK
ROUGH

MPT
MEDIAWEIGHT

MEDIUM (75-90g/m²)

HEAVY (91-120g/

Selects the media weight to be

fed from the multi purpose tray.
m²)
ULTRA HEAVY
(121-203g/m²)

UNIT OF
MEASURE

X-DIMENSION 100-210-216

MILLIMETRE

INCH

MILLIMETRE

Selects the unit of measure for

the next two items.

Selects the width of paper defined

by the “CUSTOM” settings

referred to in the foregoing PAPER

SIZE settings.

Menu functions> 36

MEDIA MENU

ITEM SETTINGS EXPLANATION

Y-D IMEN S ION 148-297-1200

MILLIMETRE

Selects the length of paper

defined by the “CUSTOM” settings

referred to in the foregoing PAPER

SIZE settings. Note that media of

up to 1200mm in length can be

fed from the multi purpose tray

for banner printing.

Menu functions> 37

C

OLOUR MENU

The printer automatically adjusts colour balance and density at
appropriate intervals, optimising the printed output for bright
white paper viewed in natural daylight conditions. The items on
this menu provide a means of changing the default settings for
special or particularly difficult print jobs. Settings revert to their
default values when the next print job is complete.

COLOUR MENU

ITEM SETTINGS EXPLANATION

DENSITY
CONTROL

ADJUST
DENSITY

AJST
REGISTRATION

C REG FINE
ADJUST

M REG FINE
ADJUST

Y REG FINE
ADJUST

AUTO

MANUAL

EXECUTE Selecting this will perform the auto

EXECUTE Performs automatic colour

-3~0~+3

-3~0~+3

-3~0~+3

If set to AUTO, image density will be
automatically adjusted at power on,
when a new image drum or toner
cartridge is installed, and at intervals
of 100, 300 and 500 drum counts. If
a 500 drum count interval occurs
during a print job it will occur at the
end of that job, and will take up to
55 seconds. If set to manual, this
adjustment will only be performed
when initiated by the next menu
item.

density set up immediately.

registration adjustment. Normally
this is done on power on and when
the top cover is opened and then
closed. This process accurately
aligns the cyan, magenta and yellow
images to the black image.

Performs fine adjustment of image
timing in relation to the black image
component.

Menu functions> 38

S

YSTEM CONFIGURATION MENU

This menu adjusts general printer settings to suit the way you
prefer to work.

SYSTEM CONFIGURATION MENU

ITEMS SETTINGS EXPLANATION

POW SAVE TIME 5

CLEARABLE
WARNING

MANUAL
TIMEOUT

WAIT TIMOUT 5~40~300 Specifies how many seconds the

LOW TONER CONT INUE

JAM RECOVERY ON

ERROR REPORT ON

15
30

60

240

ON

JOB

OFF
30

60

STOP

OFF

OFF

Adjusts the idling time before the
printer automatically switches into
power saving mode. In this mode
power consumption is reduced to a
low level required to just keep the
printer operating and ready to
receive data. When a job is sent the
printer will require a warm-up time
of up to 1 m inu te b efore pr int ing can
begin.

When ON, non-critical warnings,
such as requests for a different
paper size, can be cleared by
pressing the ON LINE button. When
set to JOB, they are cleared when
the print job resumes.

Specifies how many seconds the
printer will wait for paper to be fed
before cancelling the job.

printer will wait when received data
pauses before forcing a page eject.
In PostScript Emulation mode the
job will be cancelled if timeout
occurs.

Specifies whether the printer should
continue printing even after a low
toner condition is detected.

Specifies whether the printer should
perform jam recovery after a paper
jam has occurred. If ON, the printer
will attempt to print again any pages
lost due to a paper jam once the jam
has been cleared.

Specifies whether to print an error
report when an internal error occurs.

Menu functions> 39

SYSTEM CONFIGURATION MENU

ITEMS SETTINGS EXPLANATION

LANGUAGE English,

USB

MENU

German,
French, Italian,
Spanish,
Swedish,
Norwegian,
Danish, Dutch,
Turk i s h ,
Portuguese,
Polish, Russian,
Greek,

Sets the language used for the
display window and printed reports.

This menu controls the operation of the printer’s USB data
interface.

USB MENU

ITEM SETTINGS EXPLANATION

VERSION 2.0 Selects USB version for

compatibility.

SOFT RESET ENABLE /

DISABLE

N

ETWORK MENU

Enables or disables the SOFT RESET
command.

This menu controls the operation of the printer’s 10Base-T/
100Base-T network interface.

NETWORK MENU

ITEM SETTINGS EXPLANATION

TCP/IP ENABLE /

DISABLE

NETBEUI ENABLE /

IP ADDRESS
SET

DISABLE
AUTO / MANUAL Specifies whether IP address

Menu functions> 40

Enables or disables this network
protocol.

Enables or disables this network
protocol.

allocation is automatic (DHCP) or
manually assigned.

NETWORK MENU

ITEM SETTINGS EXPLANATION

IP ADDRESS xxx.xxx.xxx.xxx Current assigned IP address. To

change, press ENTER and use +/–
keys to increment 1st octet, then
press ENTER again to move on to
next octet. When 4th octet has been
set, press ENTER again to register
new address.

SUBNET MASK xxx.xxx.xxx.xxx Current assigned subnet mask. To

change, proceed as above.

GATEWAY
ADDRESS

INITIALIZE
NIC?

WEB/IPP ENABLE /

TELNET ENABLE /

FTP ENABLE /

SNMP ENABLE /

LAN NORMAL / SMALL

M

EMORY MENU

xxx.xxx.xxx.xxx Current assigned gateway address.

To change, proceed as above.

EXECUTE Initialises the network hardware.

Enables or disables Web config.

DISABLE

DISABLE

DISABLE

DISABLE

facility and Internet Printing
Protocol.

Enables or disables Telnet config.
facility.

Enables or disables communication
via FTP.

Enables or disables SNMP protocol.

This menu determines how printer memory is used.

MEMORY MENU

ITEM SETTINGS EXPLANATION

RECEIVE BUF
SIZE

FLASH
INITIALIZE

AUTO, 0.5MB,
1MB, 2MB, 4MB,
8MB, 16MB

EXECUTE Clears all data from flash memory.

Menu functions> 41

Sets the size of buffer memory for
receiving incoming data. Normally
this is allocated dynamically as
required.

S

YSTEM ADJUSTMENT MENU

This menu provides fine adjustment of image position on the
printed page in steps of 0.25mm.

SYS ADJUST MENU

ITEM SETTINGS EXPLANATION

X ADJUST -2.00 ~ 0 ~

Y ADJUST -2.00 ~ 0 ~

M

AINTENANCE MENU

+2.00

+2.00

Horizontal position.

Vertical position.

This menu provides access to various printer maintenance
functions.

MAINTENANCE MENU

ITEM SETTINGS EXPLANATION

MENU RESET EXECUTE Resets menus to default settings.
SAVE MENU EXECUTE Saves current menu settings as

default values. At confirmation
prompt, press ENTER to confirm save,
or CANCEL to cancel.

POWER SAVE ENABLE /

DISABLE

PAPER BLACK
SETTING

PAPER COLOUR
SETTING

TRANSPR
BLACK SETTING

TRANSPR
COLOUR
SETTING

–2~0~+2 Used for small adjustment when you

–2~0~+2 As above, but for colour printing.

–2~0~+2 As above but for mono printing on

–2~0~+2 As above but for colour printing on

Enables or disables automatic power
save mode. Delay before entering
this mode is set in the system
configuration menu.

experience faded print or light
specks / streaking in monochrome
printing on white paper. Select a
higher value to reduce fading, or a
lower value to reduce specks or
streaking in high density print areas.

transparencies.

transparencies.

Menu functions> 42

U

SAGE MENU

This menu is for information only, and provides an indication of
total usage of the printer and the expected life left in its
consumable items. This is particularly useful if you do not have a
full set of replacement consumables to hand and you need to
know how soon you will need them.

USAGE MENU

ITEM EXPLANATION

TOTAL PAGE COUNT The total number of prints output by the printer.
TRAYn PAGE COUNT The total number of pages fed from tray n.
MPT PAGE COUNT The total number of pages fed from the multi

COLOUR PAGE
COUNT

MONO PAGE COUNT The total number of pages printed in

K DRUM LIFE
REMAINING
C DRUM LIFE
REMAINING
M DRUM LIFE
REMAINING
Y DRUM LIFE
REMAINING

K TONER
C TONER

M TONER
Y TONER

purpose tray.
The total number of pages printed in colour.

monochrome.

Percentage of life remaining in these consumable
items.

Current toner level for 5,000 page and
3,000 page cartridges.

Menu functions> 43

R

5K XXXXXX

3K XXXXX

EPLACING CONSUMABLE ITEMS

This section explains how to replace consumable items when due.
As a guide, the life expectancy of these items is:

> Toner — 3,000 (standard capacity) or 5,000 (high

capacity) A4 pages at 5% coverage, which means that 5%
of the addressable print area is printed with this colour.
Toner life is directly affected by coverage, e.g. at 10%
coverage there is sufficient toner for 1,500 pages
(standard capacity) or 2,500 pages (high capacity),
conversely at 2.5% there is sufficient toner for 6,000
pages (standard capacity) or 10,000 pages (high
capacity) in the cartridge.

2

1

The printer is shipped with sufficient toner for 3,000
A4 pages in the print cartridges of which 1,500 A4
pages of toner are used to charge the image drum.

> Image drum — 17,000 pages (calculated on typical office

usage where 20% of printing is 1 page only, 30% is 3
page documents and 50% is print runs of 15 pages or
more).

> Transfer belt — Approximately 50,000 A4 pages.

> Fuser — Approximately 45,000 A4 pages.

> Standard capacity toner cartridge.

> High capacity toner cartridge.

Replacing consumable items> 44

C

ONSUMABLE ORDER DETAILS

ITEM LIFE ORDER NO.

Toner, high capacity, black 5,000 A4 @ 5% 42127457

Toner, high capacity, cyan 5,000 A4 @ 5% 42127456

Toner, high capacity, magenta 5,000 A4 @ 5% 42127455

Toner, high capacity, yellow 5,000 A4 @ 5% 42127454

Toner, rainbow pack (1 ea. CMYK) 5,000 A4 @ 5% 42403006

Toner, standard capacity, black 3,000 A4@ 5% 42804548

Toner, standard capacity, cyan 3,000 A4@ 5% 42804547

Toner, standard capacity, magenta 3,000 A4@ 5% 42804546

Toner, standard capacity, yellow 3,000 A4@ 5% 42804545

Image drum, black 17,000 A4 pages* 42126673

Image drum, cyan 17,000 A4 pages* 42126672

Image drum, magenta 17,000 A4 pages* 42126671

Image drum, yellow 17,000 A4 pages* 42126670

Fuser 45,000 A4 pages 42625503

Transport belt 50,000 A4 @ 3/job 42158712

* Average life: 20% pages at continuous print, 50% pages at 3 pages per

job and 30% pages at 1 page per job.

Only use genuine Oki Original consumables to ensure the best quality and
performance from your hardware. Non Oki Original products may damage
your printer's performance and invalidate your warranty. Specifications
subject to change without notice. All trademarks acknowledged.

Replacing consumable items> 45

T

ONER CARTRIDGE REPLACEMENT

CAUTION!

To avoid toner wastage and possible toner sensor
errors, do not change the toner cartridge(s) until
“TONER EMPTY” is displayed.

The toner used in this printer is a very fine dry powder. It is
contained in four cartridges: one each for cyan, magenta, yellow
and black.

Have a sheet of paper handy so that you have somewhere to
place the used cartridge while you install the new one.

Dispose of the old cartridge responsibly, inside the pack that the
new one came in. Follow any regulations, recommendations, etc.,
which may be in force concerning waste recycling.

If you do spill any toner powder, lightly brush it off. If this is not
enough, use a cool, damp cloth to remove any residue. Do not use

hot water, and never use solvents of any kind. They will make stains
permanent.

WARNING!

If you inhale any toner or get it in your eyes, drink a
little water or bathe your eyes liberally in cold water.
Seek medical attention immediately.

Switch off the printer and allow the fuser to cool for about
10 minutes before opening the cover.

Replacing consumable items> 46

1. Press the cover release and open the printer’s top cover
fully.

WARNING!

If the printer has been powered on, the fuser may be
hot. This area is clearly labelled. Do not touch.

2. Note the positions of the four cartridges.

1

2

3

1. Cyan cartridge 2. Magenta cartridge

3. Yellow cartridge 4. Black cartridge

Replacing consumable items> 47

4

3. Carry out one of the following:

(a) If you are replacing a toner cartridge that has been

supplied with your printer (lever has 3 positions),
pull the coloured toner release lever on the cartridge
to be replaced towards the front of the printer, in the
direction of the arrow, but stop at the central
(upright) position (1).

1

(b) If you are replacing any other toner cartridge (lever

has 2 positions), pull the coloured toner release
lever (1) on the cartridge to be replaced fully
towards the front of the printer.

Replacing consumable items> 48

1

4. Lift the right-hand end of the cartridge and then draw the
cartridge to the right to release the left-hand end as
shown, and withdraw the toner cartridge out of the
printer.

1

2

5. Put the cartridge down gently onto a piece of paper to
prevent toner from marking your furniture.

CAUTION!

The green image drum surface is very delicate and light
sensitive. Do not touch it and do not expose it to normal
room light for more than 5 minutes. If the drum unit
needs to be out of the printer for longer than this, please
wrap the cartridge inside a black plastic bag to keep it
away from light. Never expose the drum to direct
sunlight or very bright room lighting.

6. Remove the new cartridge from its box but leave its

wrapping material in place for the moment.

Replacing consumable items> 49

7. Gently shake the new cartridge from end to end several
times to loosen and distribute the toner evenly inside the
cartridge.

8. Remove the wrapping material and peel off the adhesive
tape from the underside of the cartridge.

9. Holding the cartridge by its top centre with the coloured
lever to the right, lower it into the printer over the image
drum unit from which the old cartridge was removed.

10. Insert the left end of the cartridge into the top of the
image drum unit first, pushing it against the spring on the
drum unit, then lower the right end of the cartridge down
onto the image drum unit.

1

Replacing consumable items> 50

2

11. Pressing gently down on the cartridge to ensure that it is
firmly seated, push the coloured lever (1) towards the
rear of the printer. This will lock the cartridge into place
and release toner into the image drum unit.

1

12. Finally, close the top cover and press down firmly at both
sides so that the cover latches closed.

Replacing consumable items> 51

I

MAGE DRUM REPLACEMENT

Switch off the printer and allow the fuser to cool for about
10 minutes before opening the cover.

CAUTION!

Static sensitive devices, handle with care.

The printer contains four image drums: cyan, magenta, yellow
and black.

1. Press the cover release and open the printer’s top cover
fully.

WARNING!

If the printer has been powered on, the fuser will be hot.
This area is clearly labelled. Do not touch.

Replacing consumable items> 52

2. Note the positions of the four cartridges.

1

2

3

4

1. Cyan cartridge 2. Magenta cartridge

3. Yellow cartridge 4. Black cartridge

3. Holding it by its top centre, lift the image drum, complete
with its toner cartridge, up and out of the printer.

Replacing consumable items> 53

4. Put the cartridge down gently onto a piece of paper to
prevent toner from marking your furniture and to avoid
damaging the green drum surface.

CAUTION!

The green image drum surface at the base of the
cartridge is very delicate and light sensitive. Do not
touch it and do not expose it to normal room light for
more than 5 minutes. If the drum unit needs to be out of
the printer for longer than this, please wrap the
cartridge inside a black plastic bag to keep it away from
light. Never expose the drum to direct sunlight or very
bright room lighting.

5. With the coloured toner release lever (1) to the right, pull

the lever towards you. This will release the bond between
the toner cartridge and the image drum cartridge.

1

6. Lift the right-hand end of the cartridge and then draw the
cartridge to the right to release the left-hand end as
shown, and withdraw the toner cartridge out of the image
drum cartridge. Place the cartridge on a piece of paper to
avoid marking your furniture.

2

1

7. Take the new image drum cartridge out of its packaging
and place it on the piece of paper where the old cartridge

Replacing consumable items> 54

was placed. Keep it the same way round as the old unit.
Pack the old cartridge inside the packaging material for
disposal.

8. Place the toner cartridge onto the new image drum
cartridge as shown. Push the left end in first, and then
lower the right end in. (It is not necessary to fit a new
toner cartridge at this time unless the remaining toner
level is very low.)

1

2

9. Push the coloured release lever (1) away from you to lock
the toner cartridge onto the new image drum unit and
release toner into it.

1

Replacing consumable items> 55

10. Holding the complete assembly by its top centre, lower it
into place in the printer, locating the pegs at each end into
their slots in the sides of the printer cavity.

11. Finally, close the top cover and press down firmly at both
sides so that the cover latches closed.

NOTE

If you need to return or transport your printer for any reason,
please make sure you remove the image drum unit
beforehand and place in the bag provided. This is to avoid
toner spillage.

Replacing consumable items> 56

R

EPLACING THE BELT UNIT

The belt unit is located under the four image drums. This unit
requires replacement approximately every 50,000 pages.

Switch off the printer and allow the fuser to cool for about
10 minutes before opening the cover.

1. Press the cover release and open the printer’s top cover
fully.

WARNING!

If the printer has been powered on, the fuser will be hot.
This area is clearly labelled. Do not touch.

2. Note the positions of the four cartridges. It is essential

that they go back in the same order

1

1

2

2

3

3

1. Cyan cartridge 2. Magenta cartridge

3. Yellow cartridge 4. Black cartridge

Replacing consumable items> 57

4

4

3. Lift each of the image drum units out of the printer and
place them in a safe place away from direct sources of
heat and light.

CAUTION!

The green image drum surface at the base of each cartridge
is very delicate and light sensitive. Do not touch it and do
not expose it to normal room light for more than 5 minutes.
If the drum unit needs to be out of the printer for longer
than this, please wrap the cartridge inside a black plastic
bag to keep it away from light. Never expose the drum to
direct sunlight or very bright room lighting.

4. Locate the two fasteners (5) at each side of the belt and

the lifting bar (6) at the front end.

5

6

5. Turn the two fasteners 90° to the left. This will release the
belt from the printer chassis.

6. Pull the lifting bar (6) upwards so that belt tilts up towards
the front, and withdraw the belt unit from the printer.

Replacing consumable items> 58

7. Lower the new belt unit into place, with the lifting bar at
the front and the drive gear towards the rear of the
printer. Locate the drive gear into the gear inside the
printer by the rear left corner of the unit, and lower the
belt unit flat inside the printer.

8. Turn the two fasteners (5) 90° to the right until they lock.
This will secure the belt unit in place.

9. Replace the four image drums, complete with their toner
cartridges, into the printer in the same sequence as they
came out: cyan (nearest the rear), magenta, yellow and
black (nearest the front).

10. Finally, close the top cover and press down firmly at both
sides so that the cover latches closed.

Replacing consumable items> 59

F

USER REPLACEMENT

The fuser is located inside the printer just behind the four image
drum units.

WARNING!

If the printer has recently been powered on, some fuser
co mponents will be very h ot. Handle the fuser with extreme
care, holding it only by its handle, which will only be mildly
warm to the touch. A warning label clearly indicates the
area. If in doubt, switch the printer off and wait at least
10 minutes for the fuser to cool before opening the printer
cover.

Switch off the printer and allow the fuser to cool for about
10 minutes before opening the cover.

1. Press the cover release and open the printer’s top cover
fully.

Replacing consumable items> 60

2. Identify the fuser handle (1) on the top of the fuser unit.

1

2

C

M

Y

K

3. Pull the two fuser retaining levers (2) towards the front of
the printer so that they are fully upright.

4. Holding the fuser by its handle (1), lift the fuser straight
up and out of the printer. If the fuser is still warm, place it
on a flat surface which will not be damaged by heat.

5. Remove the new fuser from its packaging and remove the
transit material.

6. Holding the new fuser by its handle, make sure that it is
the correct way round. The retaining levers (2) should be
fully upright, and the two locating lugs (3) should be
towards you.

3

22

Replacing consumable items> 61

7. Lower the fuser into the printer, locating the two lugs (3)
into their slots in the metal partition which separates the
fuser area from the image drums.

8. Push the two retaining levers (2) towards the rear of the
printer to lock the fuser in place.

2

C

M

Y

K

Finally, close the top cover and press down firmly at both sides
so that the cover latches closed.

Replacing consumable items> 62

C

LEANING THE

Clean the LED head when printing does not come out clearly, has
white lines or when text is blurred.

1. Switch off the printer and open the top cover.

2. Gently wipe the LED head surface with LED lens cleaner or

LED

soft tissue.

HEAD

CAUTION!

Do not use methyl alcohol or other solvents on the LED
head as damage to the lens surface will occur.

3. Close the top cover.

Replacing consumable items> 63

I

NSTALLING UPGRADES

This section explains how to install optional equipment into your
printer. This includes:

•duplex (two-sided printing) unit (standard on

C5250dn).

• additional RAM memory.

• additional paper tray.

D

UPLEX UNIT

The duplex unit adds the function of two-sided printing, using
less paper and making large documents easier to handle. It also
enables booklet printing, which uses even less paper and makes
large documents even easier to handle.

The duplex unit slides straight into the rear of the printer and
requires no tools to install.

Ensure printer is switched off at the AC outlet and remove cable
from printer AC input socket.

1. Unpack the new unit and remove any transit material from
it.

2. Ensure that the unit is the right way up, as shown, and
push it into the slot behind the rear panel. The panel will
swing inwards as you push the unit into it. Push the unit
all the way in until it stops and latches home.

3. Switch the printer on and wait for it to warm up (about
1 minute).

Installing upgrades> 64

4. Print a menu map as follows:

(a) Press the + button to access the Information Menu.

(b) Press ENTER once for the menu map.

(c) Press ENTER again to print the menu map.

(d) When the menu map is printed, press ON LINE to exit

the menu system.

5. Examine the first page of the menu map.

Near the top of the page, between the two horizontal lines,
you will see the current printer configuration. This list
should indicate that the duplex unit is now installed.

All that remains is to adjust the Windows printer driver to
make full use of the new features.

Installing upgrades> 65

M

EMORY UPGRADE

The basic printer model comes equipped with 32MB of main
memory. This can be upgraded with an additional memory board
containing 64MB or 256MB, giving a maximum total memory
capacity of 288MB.

Installation takes a few minutes, and requires a medium size
cross-head (philips type) screwdriver.

1. Switch the printer off and disconnect the AC power cable.

2. Press the cover release and open the printer’s top cover

fully.

WARNING!

If the printer has been powered on recently, the fuser
will be hot. This area is clearly labelled. Do not touch.

3. Lift the front cover latch and pull open the front cover.

4. Remove the screw securing the right-hand side cover.

5. Lift the edge of the side cover slightly at the two points

shown, and pull the cover away from the printer at the
top. Lift the cover slightly to detach it from the printer.
Place it safely to one side.

Installing upgrades> 66

6. Carefully remove the new memory board from its
wrapping. Try to handle the board only by its short edges,
avoiding contact with any metal parts as far as possible.
In particular, avoid touching the edge connector.

7. Notice that the memory board has a small cutout in the
edge connector, which is closer to one end than the other.

8. Identify the RAM expansion slot (1) in the printer.

2

1

2

9. If the RAM expansion slot already contains a memory
upgrade board, that board will have to be removed before
you can install the new one. To remove it proceed as
follows, otherwise skip to step 10.

(a) Identify the locking clips (2) at each end of the RAM

expansion slot (1).

(b) Push the clips outward and back into the printer. The

board will pop out slightly.

(c) Grip the board firmly by its short edges and pull it

out of the slot.

(d) Place the removed memory board in the antistatic

bag which originally contained the new memory
board.

Installing upgrades> 67

10. Hold the new memory board by its short edges, so that
the edge connector faces in towards the RAM expansion
slot, and the small cutout is closer to the bottom of the
printer.

11. Gently push the board into the RAM expansion slot until it
latches in and will not go any further.

12. Locate the three retaining clips at the bottom of the side
cover into their rectangular holes near the bottom of the
printer.

13. Close the top of the side cover up to the printer and refit
the securing screw removed in step 4.

14. Close the front cover and close the top cover, pressing
down firmly at each side to latch it closed.

15. Reconnect the AC power cable and switch the printer on.

16. When the printer is ready, print a menu map as follows:

(a) Press the + button to access the Information Menu.

(b) Press ENTER once for the menu map.

(c) Press ENTER again to print the menu map.

(d) When the menu map is printed, press ON LINE to exit

the menu system.

17. Examine the first page of the menu map.

Near the top of the page, between the two horizontal lines,
you will see the current printer configuration. This list
contains the figure for total memory size.

This should indicate the total memory now installed, which
should be the size of memory board you have installed plus
32MB.

Installing upgrades> 68

S

ECOND PAPER TRAY

An additional paper tray can be installed and, when combined
with the standard paper tray, increases the paper capacity to 830
sheets (approximately).

Installation

1. Switch off the printer and disconnect the power cable and

printer interface cable.

WARNING!

The printer weighs 25 kg. 2 people are required to lift
the printer safely and prevent any personal injury.

2. Lower the printer gently on to the additional paper tray

unit aligning the holes and connection socket on the base
of the printer with the locating pegs and plug on the

additional paper tray unit.

3. Connect the printer interface cable and power cable, then
switch on the printer.

All that remains is to adjust the Windows printer driver to make
full use of the new features.

Installing upgrades> 69

A

DJUSTING WINDOWS PRINTER DRIVERS

Once your new upgrade has been installed, you may need to
update the Windows printer driver so that the additional features
are available to your Windows applications.

Remember that if your printer is shared between users on
different computers, the driver must be adjusted on each user’s
machine.

The illustrations shown here are for Windows XP. Other Windows
versions may appear slightly different, but the principles are the
same.

If you have installed a memory upgrade it is not necessary to
change the printer driver, and you can ignore this section.

If you have installed a duplex unit, proceed as follows:

1. Open the Printers window
(called “Printers and Faxes” in
Windows XP) via the Start
Menu or from the Windows
Control Panel.

2. Right-click the printer icon for
this printer, and choose
Properties from the pop-up
menu.

3. On the Device Options tab,
check the box for the upgrade
you have just installed.

4. Click OK to close the properties window, and then close
the Printers window.

Installing upgrades> 70

C

LEARING PAPER JAMS

Provided that you follow the recommendations in this guide on
use of print media, and you keep the media in good condition
prior to use, your printer should give years of reliable service.
However, paper jams occasionally do occur, and this section
explains how to clear them quickly and simply.

Jams can occur due to paper misfeeding from a paper tray or at
any point on the paper path through the printer. When a jam
occurs, the printer immediately stops, and the Alert LED on the
Status Panel (together with the Status Monitor) informs you of
the event. If printing multiple pages (or copies), do not assume
that, having cleared an obvious sheet, others will not also be
stopped somewhere along the path. These must also be removed
in order to clear the jam fully and restore normal operation.

1. If a sheet is well advanced out of the top of the printer,
simply grip it and pull gently to draw it fully out. If it does
not remove easily, do not use excessive force. It can be
removed from the rear later.

2. Press the cover release and open the printer’s top cover
fully.

WARNING!

If the printer has been powered on, the fuser will be hot.
This area is clearly labelled. Do not touch.

Clearing paper jams> 71

3. Note the positions of the four cartridges.

1

2

3

4

1. Cyan cartridge 2. Magenta cartridge

3. Yellow cartridge 4. Black cartridge

It will be necessary to remove the four image drums to
gain access to the paper path.

4. Holding it by its top centre, lift the cyan image drum,
complete with its toner cartridge, up and out of the
printer.

Clearing paper jams> 72

5. Put the cartridge down gently onto a piece of paper to
prevent toner from marking your furniture and to avoid
damaging the green drum surface.

CAUTION!

The green image drum surface at the base of the
cartridge is very delicate and light sensitive. Do not
touch it and do not expose it to normal room light for
more than 5 minutes.

6. Repeat this removal procedure for each of the remaining

image drum units.

7. Look into the printer to check whether any sheets of paper
are visible on any part of the belt unit.

3

2

1

4

• To remove a sheet with its leading edge at the front of

the belt (1), carefully lift the sheet from the belt and
pull it forwards into the internal drum cavity and
withdraw the sheet.

CAUTION!

Do not use any sharp or abrasive objects to separate
sheets from the belt. This may damage the belt surface.

Clearing paper jams> 73

• To remove a sheet from the central area of the

belt (2), carefully separate the sheet from the belt
surface and withdraw the sheet.

3

2

1

4

• To remove a sheet just entering the fuser (3), separate

the trailing edge of the sheet from the belt, push the
fuser pressure release lever (4) towards the front and
down to release the fuser’s grip on the sheet, and
withdraw the sheet through the drum cavity area. Then
allow the pressure release lever to rise again.

NOTE

If the sheet is well advanced into the fuser (only a short
length is still visible), do not attempt to pull it back. Follow the
next step to remove it from the rear of the printer.

Clearing paper jams> 74

8. Starting with the cyan image drum unit nearest the fuser,
replace the four image drums into the drum cavity,
making sure to locate them in the correct order.

1

2

3

4

1. Cyan cartridge 2. Magenta cartridge

3. Yellow cartridge 4. Black cartridge

• Holding the complete assembly by its top centre, lower

it into place in the printer, locating the pegs at each
end into their slots in the sides of the printer cavity.

Clearing paper jams> 75

9. Lower the top cover but do not press down to latch it
closed yet. This will protect the drums from excessive
exposure to room lighting while you check the remaining
areas for jammed sheets.

10. Open the rear exit tray (5) and check for a sheet of paper
in the rear path area (6).

6

5

• Pull out any sheets found in this area.

• If the sheet is low down in this area and difficult to

remove, it is probably still gripped by the fuser. In this
case raise the top cover, reach around and press down
on the fuser pressure release lever (7).

4

11. If you are not using the rear exit tray, close it once paper
has been removed from this area.

Clearing paper jams> 76

12. If your printer has a duplex unit installed, press the cover
release at the centre of the unit, open the cover and
remove any sheets in this area, then close the cover.

13. Lift the front cover release and pull open the front cover.

Clearing paper jams> 77

14. Check inside the cover for sheets in this area and remove
any that you find, then close the cover.

15. Pull out the paper tray and ensure that all paper is stacked
properly, is undamaged, and that the paper guides are
properly positioned against the edges of the paper stack.
When satisfied, replace the tray.

16. Finally, close the top cover and press down firmly at both
sides so that the cover latches closed.

When the jam has been cleared, if Jam Recovery is set to ON in
the System Configuration Menu, the printer will attempt to
reprint any pages lost due to paper jams.

Clearing paper jams> 78

S

PECIFICATIONS

ITEM SPECIFICATION

Dimensions 425 x 561 x 345mm (W x D x H)
Weight 25Kg
Print speeds 16 pages per minute colour / 24 pages per minute

monochrome
Resolution 600dpi or 600 x 1200dpi
Emulations Windows GDI
Auto Features Auto registration

Auto density adjustment

Auto consumable counter reset
Memory 32MB standard, upgradable to 96MB or 288MB
Paper capacity

at 80g/m²

Paper weight 64 ~ 120g/m² in main tray

Paper output 250 sheets in face down (top) stacker @ 80g/m²

Printer life 420,000 pages or 5 years
Duty cycle 50,000 pages per month max., 4,000 pages per month

Toner life 5,000 pages at 5% coverage
Image drum

life

Belt life 50,000 A4 pages at 3 pages per job
Fuser life 45,000 A4 pages

300 sheets in main tray

530 sheets in optional 2nd tray

100 sheets in multi purpose tray

64 ~ 176g/m² in 2nd tray

75 ~ 203g/m² in multi purpose tray

100 sheets in face up (rear) stacker @ 80g/m²

average

17,000 pages (22,000 pages at continuous print,15,000

pages at 3 pages per job and 7,500 pages at 1 page per

job)

Specifications> 79

INDEX

A

Additional paper trays ................... 69

Adjusting Windows printer drivers... 70

Advanced features

enabling or disabling................. 23

B

Belt

how to replace ......................... 57

life expectancy......................... 44

Black printing

glossy or matte........................ 20

Booklet printing

PCL emulation ......................... 18

C

Colour matching

choosing image source.............. 29

general advice ......................... 25

general settings ....................... 20

how to access .......................... 28

printing colour swatch............... 30

D

Duplex

paper size and weight limits ...... 12

selecting in Windows ................ 18

Duplex unit .................................. 64

installing................................. 64

E

Envelopes

loading ................................... 16

F

Fuser

how to replace ......................... 60

life expectancy......................... 44

I

Image drum

how to replace ......................... 52

life expectancy......................... 44

Image drums

life remaining .......................... 43

Installing upgrades ....................... 64

L

Labels

recommended types ..................10

Language

changing display and

reports language .................... 40

LED head .....................................63

M

Maintenance

Cleaning LED head ....................63

Memory

installing upgrade .....................66

Memory upgrade ...........................66

Menus

Colour menu ............................ 38

how to use ...............................32

Information menu ..................... 33

Maintenance menu ....................42

Media menu .............................35

Memory menu ..........................41

menu map printing....................33

Network menu..........................40

Print menu ...............................33

System adjustment menu ..........42

System configuration menu ........39

Usage menu .............................43

USB menu ...............................40

Multi purpose tray

how to use ...............................16

paper metrics ...........................11

O

Options

Additional paper trays................69

P

Page orientation

setting in Windows ....................19

Paper

jam clearing ............................. 71

loading cassette trays................13

loading letterhead .....................14

recommended types ..................10

size setting in Windows..............18

supported sheet sizes ................ 11

tray selection in Windows...........18

weight selection in Windows .......18

Poster printing ..............................18

Index> 80

Power saving

delay time............................... 39

Print order

face down stacker .................... 14

face up stacker ........................ 15

Print settings

how to save............................. 18

Printer default settings

Windows defaults ..................... 21

Printing

adjusting image position ........... 42

Priority

print queue priority .................. 22

R

Resolution

setting in Windows ................... 19

S

Second paper tray ........................ 69

Separator page

separating print jobs on a shared

printer.................................. 23

Spooling

Windows settings ..................... 22

T

Toner

how to replace ......................... 46

life expectancy......................... 44

life remaining .......................... 43

Transparencies

recommended types ................. 10

W

Watermark

printing in Windows .................. 19

Index> 81

OKI CONTACT DETAILS

Oki Systems (UK) Limited

550 Dundee Road
Slough Trading Estate
Slough, SL1 4LE

Tel:[phone]
Fax:[phone]
http://www.oki.co.uk

Oki Systems Ireland Limited

The Square Industrial Complex
Tallaght, Dublin 24, Ireland

Tel:[phone]
Fax:[phone]
http://www.oki.ie

Technical Support:
Tel:[phone]
Fax:[phone]
E-mail: [e-mail]

OKI Systems (Ireland) Ltd.

(Northern Ireland)
40 Sydenham Park
Belfast, BT4 1PW

Tel:[phone]
http://www.oki.ie

Technical Support:
Tel: [phone]
E-mail: [e-mail]

Oki Data Corporation

4-11-22 Shibaura, Minato-ku, Tokyo
108-8551, Japan

Tel:[phone]
Fax:[phone]
http://www.okidata.co.jp

Oki Data (Singapore) Pte. Ltd.

78 Shenton Way, #09-01,
Singapore 079120

Tel:[phone]
Fax:[phone]
http://www.okidata.com.sg

Oki Systems (Thailand) Ltd.

956 Udomvidhya Building 6th Floor,
Rama IV Rd., Bangkok 10500, Thailand

Tel:[phone]
Fax:[phone]
http://www.okisysthai.com

Oki Hong Kong Limited

Suite 1909, Tower3,
China Hong Kong City,
33 Canton Rd., Tsimshatsui,
Kowloon, Hong Kong

Tel:[phone]
Fax:[phone]

The IPL Group

63-85 Victoria Street
Beaconsfield NSW 2015, Australia

Tel:[phone]
Fax:[phone]
http://www.oki.com.au

Comworth Systems Ltd.

10 Constellation Drive Mairangi Bay,
Auckland,
New Zealand

Tel:[phone]
Fax:[phone]
http://www.comworth.co.nz

Oki contact details> 82

OKI Europe Limited

Central House

four Road, Hounslow

Bal

TW3 1HY, United Kingdom

Tel:

[phone]

[phone]

Fax:

w.okiprintingsolutions.com

ww

07067701 iss.02