Lexmark C935dtn User Manual

							Transparency print quality is poor
C
HECK THE TRANSPARENCIES
Use only transparencies recommended by the printer manufacturer.
CHECK THE PAPER TYPE SETTING
Load transparencies, and make sure the Paper Type setting is set to Transparency.
Uneven print density
ABCDE
A
BCDE
A
BCDE
Replace the photoconductor(s).
Note: The printer has four photoconductors: cyan, magenta, yellow, and black. The cyan, magenta, and yellow
photoconductors must all be replaced at the same time. The black photoconductor can be replaced separately.
Solving color quality problems
This section helps answer some basic color‑related questions and describes how some of the features provided in the
Quality Menu can be used to solve typical color problems.
FAQ about color printing
What is RGB color?
Red, green, and blue light can be added together in various amounts to produce a large range of colors observed in
nature. For example, red and green can be combined to create yellow. Televisions and computer monitors create
colors in this manner. RGB color is a method of describing colors by indicating the amount of red, green, or blue
needed to produce a certain color.
What is CMYK color?
Cyan, magenta, yellow, and black inks or toners can be printed in various amounts to produce a large range of colors
observed in nature. For example, cyan and yellow can be combined to create green. Printing presses, inkjet printers,
and color laser printers create colors in this manner. CMYK color is a method of describing colors by indicating the
amount of cyan, magenta, yellow, and black needed to reproduce a particular color.
How is color specified in a document to be printed?
Software programs typically specify document color using RGB or CMYK color combinations. Additionally, they allow
users to modify the color of each object in a document. For more information, see the software program Help topics. Troubleshooting171
Downloaded From ManualsPrinter.com Manuals 
						

							How does the printer know what color to print?
When a user prints a document, information describing the type and color of each object is sent to the printer. The
color information is passed through color conversion tables that translate the color into the appropriate amounts of
cyan, magenta, yellow, and black toner needed to produce the desired color. The object information determines the
application of color conversion tables. For example, it is possible to apply one type of color conversion table to text
while applying a different color conversion table to photographic images.
Should I use PostScript or PCL emulation printer software? What settings should I use for the best color?
The PostScript driver is strongly recommended for best color quality. The default settings in the PostScript driver
provide the preferred color quality for the majority of printouts.
Why doesnt the printed color match the color I see on the computer screen?
The color conversion tables used in Auto Color Correction mode generally approximate the colors of a standard
computer monitor. However, because of technology differences that exist between printers and monitors, there are
many colors that can also be affected by monitor variations and lighting conditions. For recommendations on how
the printer color sample pages may be useful in solving certain color‑matching problems, see the question, “How
can I match a particular color (such as a corporate logo)?”
The printed page appears tinted. Can I adjust the color?
Sometimes a printed page may appear tinted (for example, everything printed seems to be too red). This can be
caused by environmental conditions, paper type, lighting conditions, or user preference. In these instances, adjust
the Color Balance setting to create a more preferable color. Color Balance provides the user with the ability to make
subtle adjustments to the amount of toner being used in each color plane. Selecting positive or negative values for
cyan, magenta, yellow, and black (from the Color Balance menu) will slightly increase or decrease the amount of
toner used for the chosen color. For example, if a printed page has a red tint, then decreasing both magenta and
yellow could potentially improve the color balance.
My color transparencies seem dark when they are projected. Is there anything I can do to improve the color?
This problem most commonly occurs when projecting transparencies with reflective overhead projectors. To obtain
the highest projected color quality, transmissive overhead projectors are recommended. If a reflective projector
must be used, then adjusting the Toner Darkness setting to 1, 2, or 3 will lighten the transparency. Make sure to print
on the recommended type of color transparencies.
What is manual color correction?
When manual color correction is enabled, the printer employs user‑selected color conversion tables to process
objects. However, Color Correction must be set to Manual, or no user‑defined color conversion will be implemented.
Manual color correction settings are specific to the type of object being printed (text, graphics, or images), and how
the color of the object is specified in the software program (RGB or CMYK combinations).
Notes:
Manual color correction is not useful if the software program does not specify colors with RGB or CMYK
combinations. It is also not effective in situations in which the software program or the computer operating
system controls the adjustment of colors.
The color conversion tables—applied to each object when Color Correction is set to Auto—generate preferred
colors for the majority of documents.
To manually apply a different color conversion table:
1From the Quality menu, select Color Correction, and then select Manual.
2From the Quality menu, select Manual Color, and then select the appropriate color conversion table for the
affected object type. Troubleshooting172
Downloaded From ManualsPrinter.com Manuals 
						

							Manual Color menu
Object typeColor conversion tables
RGB Image
RGB Text
RGB Graphics
Vivid—Produces brighter, more saturated colors and may be applied
to all incoming color formats.
sRGB Display—Produces an output that approximates the colors
displayed on a computer monitor. Black toner usage is optimized for
printing photographs.
Display—True Black—Produces an output that approximates the
colors displayed on a computer monitor. Uses only black toner to create
all levels of neutral gray.
sRGB Vivid—Provides an increased color saturation for the sRGB
Display color correction. Black usage is optimized for printing business
graphics.
Off—No color correction is implemented.
CMYK Image
CMYK Text
CMYK Graphics
US CMYK—Applies color correction to approximate the SWOP
(Specifications for Web Offset Publishing) color output.
Euro CMYK—Applies color correction to approximated EuroScale color
output.
Vivid CMYK—Increases the color saturation of the US CMYK color
correction setting.
Off—No color correction is implemented.
How can I match a particular color (such as a corporate logo)?
From the printer Quality menu, nine types of Color Samples sets are available. These are also available from the Color
Samples page of the Embedded Web Server. Selecting any sample set generates a multiple‑page printout consisting
of hundreds of colored boxes. Either a CMYK or RGB combination is located on each box, depending on the table
selected. The observed color of each box is obtained by passing the CMYK or RGB combination labeled on the box
through the selected color conversion table.
By examining Color Samples sets, a user can identify the box whose color is the closest to the desired color. The color
combination labeled on the box can then be used for modifying the color of the object in a software program. For
more information, see the software program Help topics. Manual color correction may be necessary to utilize the
selected color conversion table for the particular object.
Selecting which Color Samples set to use for a particular color‑matching problem depends on the Color Correction
setting being used (Auto, Off, or Manual), the type of object being printed (text, graphics, or images), and how the
color of the object is specified in the software program (RGB or CMYK combinations). When the printer Color
Correction setting is set to Off, the color is based on the print job information; and no color conversion is implemented.
Note: The Color Samples pages are not useful if the software program does not specify colors with RGB or CMYK
combinations. Additionally, certain situations exist in which the software program or the computer operating
system adjusts the RGB or CMYK combinations specified in the program through color management. The resulting
printed color may not be an exact match of the Color Samples pages.
What are detailed Color Samples and how do I access them?
Detailed Color Samples sets are available only through the Embedded Web Server of a network printer. A detailed
Color Samples set contains a range of shades (displayed as colored boxes) that are similar to a user‑defined RGB or
CMYK value. The likeness of the colors in the set are dependent on the value entered in the RGB or CMYK Increment
box. Troubleshooting173
Downloaded From ManualsPrinter.com Manuals 
						

							To access a detailed Color Samples set from the Embedded Web Server:
1Open a Web browser.
2In the address bar, type the network printer IP address.
3Click Configuration.
4Click Color Samples.
5Click Detailed Options to narrow the set to one color range.
6When the Detailed Options page appears, select a color conversion table.
7Enter the RGB or CMYK color number.
8Enter an Increment value from 1–255.
Note: The closer the value is to 1, the narrower the color sample range will appear.
9Click Print to print the detailed Color Samples set.
Contacting Customer Support
When you call Customer Support, describe the problem you are experiencing, the message on the display, and the
troubleshooting steps you have already taken to find a solution.
You need to know your printer model type and serial number. For more information, see the label on the inside top
front cover of the printer. The serial number is also listed on the menu settings page.
In the U.S. or Canada, call (1‑800‑539‑6275). For other countries/regions, visit the Lexmark Web site at
www.lexmark.com. Troubleshooting174
Downloaded From ManualsPrinter.com Manuals 
						

							Notices
Product name:
Lexmark C930
Machine type:
5057
Model(s):
030
Edition notice
August 2011
The following paragraph does not apply to any country where such provisions are inconsistent with local law:
LEXMARK INTERNATIONAL, INC., PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain
transactions; therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the
information herein; these changes will be incorporated in later editions. Improvements or changes in the products or
the programs described may be made at any time.
References in this publication to products, programs, or services do not imply that the manufacturer intends to make
these available in all countries in which it operates. Any reference to a product, program, or service is not intended to
state or imply that only that product, program, or service may be used. Any functionally equivalent product, program,
or service that does not infringe any existing intellectual property right may be used instead. Evaluation and verification
of operation in conjunction with other products, programs, or services, except those expressly designated by the
manufacturer, are the user’s responsibility.
For Lexmark technical support, visit support.lexmark.com.
For information on supplies and downloads, visit www.lexmark.com.
If you dont have access to the Internet, you can contact Lexmark by mail:
Lexmark International, Inc.
Bldg 004-2/CSC
740 New Circle Road NW
Lexington, KY 40550
© 2007 Lexmark International, Inc.
All rights reserved.
UNITED STATES GOVERNMENT RIGHTS
This software and any accompanying documentation provided under this agreement are commercial computer
software and documentation developed exclusively at private expense. Notices175
Downloaded From ManualsPrinter.com Manuals 
						

							Trademarks
Lexmark and Lexmark with diamond design, MarkNet, and MarkVision are trademarks of Lexmark International, Inc.,
registered in the United States and/or other countries.
PrintCryption is a trademark of Lexmark International, Inc.
PCL® is a registered trademark of the Hewlett-Packard Company. PCL is Hewlett-Packard Company’s designation of a
set of printer commands (language) and functions included in its printer products. This printer is intended to be
compatible with the PCL language. This means the printer recognizes PCL commands used in various application
programs, and that the printer emulates the functions corresponding to the commands.
All other trademarks are the property of their respective owners.
Conventions
Note: A Note identifies something that could help you.
Warning—Potential Damage: A Warning identifies something that could damage your product hardware or
software.
CAUTION—POTENTIAL INJURY: A CAUTION identifies something that could cause you harm.
CAUTION—DO NOT TOUCH: This type of CAUTION indicates that you should not touch the marked area.
CAUTION—HOT SURFACE: This type of CAUTION indicates a hot surface.
CAUTION—SHOCK HAZARD: This type of CAUTION indicates a shock hazard.
CAUTION—TIPPING HAZARD: This type of CAUTION indicates a tipping hazard.
Federal Communications Commission (FCC) compliance information statement
This product has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the
FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including interference that may cause undesired operation.
The FCC Class A limits are designed to provide reasonable protection against harmful interference when the equipment
is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case
the user will be required to correct the interference at his own expense.
The manufacturer is not responsible for any radio or television interference caused by using other than recommended
cables or by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could
void the users authority to operate this equipment.
Note: To assure compliance with FCC regulations on electromagnetic interference for a Class A computing device,
use a properly shielded and grounded cable such as Lexmark part number 1021231 for parallel attach or 1021294 for
USB attach. Use of a substitute cable not properly shielded and grounded may result in a violation of FCC
regulations. Notices176
Downloaded From ManualsPrinter.com Manuals 
						

							Exposure to radio frequency radiation
The following notice is applicable if your printer has a wireless network card installed.
The radiated output power of this device is far below the FCC radio frequency exposure limits. A minimum separation
of 20 cm (8 inches) must be maintained between the antenna and any persons for this device to satisfy the RF exposure
requirements of the FCC.
Industry Canada notices
Industry Canada compliance statement
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Standard
ICES-003.
Avis de conformité aux normes de l’industrie du Canada
Cet appareil numérique de classe A est conforme aux exigences de la norme canadienne relative aux équipements
pouvant causer des interférences NMB-003.
Industry Canada radio interference statement
Industry Canada (Canada)
This device complies with Industry Canada specification RSS-210. Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that
may cause undesired operation of the device.
This device has been designed to operate only with the antenna provided. Use of any other antenna is strictly prohibited
per regulations of Industry Canada.
To prevent radio interference to the licensed service, this device is intended to be operated indoors and away from
windows to provide maximum shielding. Equipment (or its transmit antenna) that is installed outdoors is subject to
licensing.
The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF
fields in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable from Health
Canadas Web site www.hc-sc.gc.ca/rpb.
The term IC: before the certification/registration number only signifies that the Industry Canada technical
specifications were met.
Industry Canada (Canada)
Cet appareil est conforme à la norme RSS-210 dIndustry Canada. Son fonctionnement est soumis aux deux conditions
suivantes :
(1) cet appareil ne doit pas provoquer dinterférences et (2) il doit accepter toute interférence reçue, y compris celles
risquant daltérer son fonctionnement.
Cet appareil a été conçu pour fonctionner uniquement avec lantenne fournie. Lutilisation de toute autre antenne est
strictement interdite par la réglementation dIndustry Canada. Notices177
Downloaded From ManualsPrinter.com Manuals 
						

							En application des réglementations dIndustry Canada, lutilisation dune antenne de gain supérieur est strictement
interdite.
Pour empêcher toute interférence radio au service faisant lobjet dune licence, cet appareil doit être utilisé à lintérieur
et loin des fenêtres afin de garantir une protection optimale.
Si le matériel (ou son antenne démission) est installé à lextérieur, il doit faire lobjet dune licence.
Linstallateur de cet équipement radio doit veiller à ce que lantenne soit implantée et dirigée de manière à némettre
aucun champ HF dépassant les limites fixées pour lensemble de la population par Santé Canada. Reportez-vous au
Code de sécurité 6 que vous pouvez consulter sur le site Web de Santé Canada www.hc-sc.gc.ca/rpb.
Le terme « IC » précédant le numéro de daccréditation/inscription signifie simplement que le produit est conforme
aux spécifications techniques dIndustry Canada.
Radio interference notice
This is a Class A product. In a domestic environment, this product may cause radio interference, in which case, the user
may be required to take adequate measures.
European Community (EC) directives conformity
This product is in conformity with the protection requirements of EC Council directives 89/336/EEC, 2006/95/EC, and
1999/5/EC on the approximation and harmonization of the laws of the Member States relating to electromagnetic
compatibility, safety of electrical equipment designed for use within certain voltage limits and on radio equipment and
telecommunications terminal equipment.
Compliance is indicated by the CE marking.
A declaration of conformity with the requirements of the directives is available from the Director of Manufacturing and
Technical Support, Lexmark International, S. A., Boigny, France.
This product satisfies the limits of EN 55022; safety requirements of EN 60950; radio spectrum requirements of ETSI
EN 300 330-1 and ETSI EN 300 330-2; and the EMC requirements of EN 55024, ETSI EN 301 489-1 and ETSI EN 301 489-3.
Česky Společnost Lexmark International, Inc. tímto prohlašuje, že výrobek tento výrobek je ve shodě se základními
požadavky a dalšími příslušnými ustanoveními směrnice 1999/5/ES.
Dansk Lexmark International, Inc. erklærer herved, at dette produkt overholder de væsentlige krav og øvrige relevante
krav i direktiv 1999/5/EF.
Deutsch Hiermit erklärt Lexmark International, Inc., dass sich das Gerät dieses Gerät in Übereinstimmung mit den
grundlegenden Anforderungen und den übrigen einschlägigen Bestimmungen der Richtlinie 1999/5/EG
befindet.
Ελληνική ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ Η LEXMARK INTERNATIONAL, INC. ΔΗΛΩΝΕΙ ΟΤΙ ΑΥΤΟ ΤΟ ΠΡΟΪΟΝ
ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ΔΙΑΤΑΞΕΙΣ
ΤΗΣ ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
English Hereby, Lexmark International, Inc., declares that this type of equipment is in compliance with the
essential requirements and other relevant provisions of Directive 1999/5/EC.
Notices178
Downloaded From ManualsPrinter.com Manuals 
						

							Español Por medio de la presente, Lexmark International, Inc. declara que este producto cumple con los requisitos
esenciales y cualesquiera otras disposiciones aplicables o exigibles de la Directiva 1999/5/CE.
Eesti Käesolevaga kinnitab Lexmark International, Inc., et seade see toode vastab direktiivi 1999/5/EÜ
põhinõuetele ja nimetatud direktiivist tulenevatele muudele asjakohastele sätetele.
Suomi Lexmark International, Inc. vakuuttaa täten, että tämä tuote on direktiivin 1999/5/EY oleellisten vaatimusten
ja muiden sitä koskevien direktiivin ehtojen mukainen.
Français Par la présente, Lexmark International, Inc. déclare que lappareil ce produit est conforme aux exigences
fondamentales et autres dispositions pertinentes de la directive 1999/5/CE.
Magyar Alulírott, Lexmark International, Inc. nyilatkozom, hogy a termék megfelel a vonatkozó alapvetõ
követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Íslenska Hér með lýsir Lexmark International, Inc. yfir því að þessi vara er í samræmi við grunnkröfur og aðrar
kröfur, sem gerðar eru í tilskipun 1999/5/EC.
Italiano Con la presente Lexmark International, Inc. dichiara che questo questo prodotto è conforme ai requisiti
essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
Latviski Ar šo Lexmark International, Inc. deklarē, ka šis izstrādājums atbilst Direktīvas 1999/5/EK būtiskajām
prasībām un citiem ar to saistītajiem noteikumiem.
LietuviųŠiuo Lexmark International, Inc. deklaruoja, kad šis produktas atitinka esminius reikalavimus ir kitas
1999/5/EB direktyvos nuostatas.
Malti Bil-preżenti, Lexmark International, Inc., jiddikjara li dan il-prodott huwa konformi mal-ħtiġijiet
essenzjali u ma dispożizzjonijiet oħrajn relevanti li jinsabu fid-Direttiva 1999/5/KE.
Nederlands Hierbij verklaart Lexmark International, Inc. dat het toestel dit product in overeenstemming is met de essentiële
eisen en de andere relevante bepalingen van richtlijn 1999/5/EG.
Norsk Lexmark International, Inc. erklærer herved at dette produktet er i samsvar med de grunnleggende krav og
øvrige relevante krav i direktiv 1999/5/EF.
Polski Niniejszym Lexmark International, Inc. oświadcza, że niniejszy produkt jest zgodny z zasadniczymi
wymogami oraz pozostałymi stosownymi postanowieniami Dyrektywy 1999/5/EC.
Português A Lexmark International Inc. declara que este este produto está conforme com os requisitos essenciais e outras
disposições da Diretiva 1999/5/CE.
Slovensky Lexmark International, Inc. týmto vyhlasuje, že tento produkt spĺňa základné požiadavky a všetky
príslušné ustanovenia smernice 1999/5/ES.
Slovensko Lexmark International, Inc. izjavlja, da je ta izdelek v skladu z bistvenimi zahtevami in ostalimi
relevantnimi določili direktive 1999/5/ES.
Svenska Härmed intygar Lexmark International, Inc. att denna produkt står i överensstämmelse med de väsentliga
egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv 1999/5/EG.
India emissions notice
This device uses very low power low range RF communication that has been tested and found not to cause any
interference whatsoever. The manufacturer is not responsible in case of any disputes arising out of requirement of Notices179
Downloaded From ManualsPrinter.com Manuals 
						

							permissions from any local authority, regulatory bodies or any organization, required by the end-user to install and
operate this product at his premises.
Noise emission levels
The following measurements were made in accordance with ISO 7779 and reported in conformance with ISO 9296.
Note: Some modes may not apply to your product.
1-meter average sound pressure, dBA
Printing 55 dBA
Ready 32 dBA
Values are subject to change. See www.lexmark.com for current values.
Temperature information
Ambient temperature 15.6C° – 32.2C°
Shipping and storage temperature‑40.0C° – 60.0C°
Waste from Electrical and Electronic Equipment (WEEE) directive
The WEEE logo signifies specific recycling programs and procedures for electronic products in countries of the European
Union. We encourage the recycling of our products. If you have further questions about recycling options, visit the
Lexmark Web site at www.lexmark.com for your local sales office phone number.
Product disposal
Do not dispose of the printer or supplies in the same manner as normal household waste. Consult your local authorities
for disposal and recycling options. Notices180
Downloaded From ManualsPrinter.com Manuals