Lexmark X646ef User Manual

							Print quality troubleshooting
131
Troubleshooting
Print quality troubleshooting
To help isolate print quality problems, print the “Print defects guide,” and check for repeating defects. If repeating defects 
appear, print the Print Quality Test Pages.
Printing the print defects guide
1Touch the help icon (?).
2Touch Print Defects Guide.
Printing the print quality test pages
1Turn the MFP off.
2Hold down the number 2 and number 6 keys on the numeric pad.
3Continue to hold the buttons, and turn the MFP on.
Hold the buttons for about 10 seconds while the MFP is powering up, then release the buttons. The MFP enters 
the Configuration menu.
4Touch Print Quality Pages.
5Touch Exit Configuration Menu.
The printer restarts and returns to the home page.
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							Solving print quality problems
132
Troubleshooting
Solving print quality problems
The information in the following table may help you solve print quality problems. If these suggestions still do not correct the 
problem, call for service. You may have an MFP part that requires adjustment or replacement.
ProblemAction
Print is too light.  • The toner may be low. To utilize the remaining toner, remove the cartridge by gripping 
the handles with both hands. With the cartridge arrows pointing downward, firmly 
shake the print cartridge side-to-side and front-to-back several times to redistribute the 
toner. Reinstall the cartridge
. Repeat this procedure multiple times until the print 
remains faded. When the print remains faded, replace the print cartridge.
• Change the Toner Darkness setting in the Quality menu.
• Change the Brightness setting in the Quality menu.
• Change the Contrast setting in the Quality menu.
• If you are printing on an uneven print surface, change the Paper Weight and Paper 
Texture settings in the Paper menu.
• Verify the correct print media is being used.
• Verify you are using the correct MFP drivers.
• Verify the environment is 16 to 32 degrees C (60 to 90
o F).
Toner smears or print comes 
off the page.• If you are printing on an uneven print surface, change the Paper Weight and Paper 
Texture settings in the Paper menu.
• Verify the print media is within the MFP specifications. See Understanding paper and 
specialty media guidelines for more details.
Toner appears on the back of 
the printed page.Toner is on the transfer roll. To help prevent this, do not load print media that is smaller 
than the page size of the job to be printed.
Open and close the MFP top front cover to run the MFP setup cycle and clean the 
transfer roll.
Toner fog or background 
shading appears on the page.• Check the print cartridge to make sure it is installed correctly.
•The Toner Darkness setting may be too dark. Change the Toner Darkness setting in 
the Quality menu.
• Verify the environment is Class B.
• Replace the charge rolls.
• Replace the print cartridge.
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							Solving print quality problems
133
Troubleshooting
Entire page is white. • Make sure the packaging material is removed from the print cartridge. 
• Check the print cartridge to be sure it is installed correctly. 
• The toner may be low. To utilize the remaining toner, remove the cartridge by gripping 
the handles with both hands. With the cartridge arrows pointing downward, firmly 
shake the print cartridge side-to-side and front-to-back several times to redistribute the 
toner. Reinstall the cartridge
. Repeat this procedure multiple times until the print 
remains faded. When the print remains faded, replace the print cartridge.
Streaks appear on the page. • The toner may be low. To utilize the remaining toner, remove the cartridge by gripping 
the handles with both hands. With the cartridge arrows pointing downward, firmly 
shake the print cartridge side-to-side and front-to-back several times to redistribute the 
toner. Reinstall the cartridge
. Repeat this procedure multiple times until the print 
remains faded. When the print remains faded, replace the print cartridge.
• If you are using preprinted forms, make sure the ink can withstand temperatures of 
230°C (446°F).
Printing is too dark. • Change the Toner Darkness setting in the Quality menu.
• Change the Brightness setting in the Quality menu.
• Change the Contrast setting in the Quality menu.
• Verify the environment is 16 to 32 degrees C (60 to 90
o F).
Note:Macintosh computer users should make sure the job lines per inch (lpi) setting is 
not set too high in the software application.
Characters have jagged or 
uneven edges.• Change the Print Resolution setting in the Quality menu to 600 dpi, 1200 Image Q, 
1200 dpi, or 2400 Image Q.
• Enable Enhance Fine Lines.
See the tables on page 135 for more settings information.
• If you are using downloaded fonts, verify the fonts are supported by the MFP, the host 
computer, and the software application.
• Verify the print media type and print tray type settings match.
• Verify you are using the correct MFP drivers.
• Verify the environment is 16 to 32 degrees C (60 to 90
o F).
ProblemAction
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							Solving print quality problems
134
Troubleshooting
Part or all of the page is 
printed in black.Check the print cartridge to see if it is installed correctly. 
The job prints, but the top and 
side margins are incorrect. • Make sure the Paper Size setting in the Paper menu is correct.
• Make sure the margins are set correctly in your software application.
Ghost images appear. • Make sure the Paper Type setting in the Paper menu is correct.
• Verify the environment is Class B.
• Replace the charge rolls.
• Replace the print cartridge.
Some of the print is cut off on 
the sides, top, or bottom of 
the media.Move the guides in the tray to the proper positions for the size loaded.
Print is skewed or 
inappropriately slanted.
Transparency print quality is 
poor.• Use only transparencies recommended by the MFP manufacturer.
• Make sure the Paper Type setting in the Paper menu is set to Transparency.
ProblemAction
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							Solving print quality problems
135
Troubleshooting
The Quality menu control panel options can be adjusted to help improve print quality. 
In addition, the Enhance Fine Lines and Gray Correction options can be enabled to improve print quality. These settings 
are available on the driver and on the MFP Embedded Web Server (EWS) interface. For more information about these 
options, see the driver Help.
Menu selectionPurposeVa l u e s†
Print Resolution To select printed output resolution 600 dpi*
1200 Image Q
1200 dpi
2400 Image Q
Toner Darkness Lightens or darkens printed output and 
alters toner consumption1—108* is the default setting.
Select a lower number to lighten the 
printed output or save toner.
Brightness Adjusts the gray value of printed 
graphics and pictures-6 — +60* is the default setting.
Contrast Adjusts the contrast of printed 
graphics and pictures0—50* is the default setting.
† Values marked by an asterisk (*) are the factory default settings.
Driver optionPurposeVa l u e s†
Enhance Fine Lines A selection to enable a print mode 
preferable for certain files containing 
fine line detail, such as architectural 
drawings, maps, electronic circuit 
diagrams, and flow chartsOn In the driver, enable the check box.
Off* In the driver, disable the check box.
Gray Correction Automatically adjusts the contrast 
enhancement applied to imagesAuto In the driver, enable the check box.
Off* In the driver, disable the check box.
† Values marked by an asterisk (*) are the factory default settings.
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							4
Contents
Chapter 1: Learning about the MFP  .................................................................................. 8
Identifying the MFP  .......................................................................................................................................... 8
Using the scanner  ............................................................................................................................................ 9
Configured models ......................................................................................................................................... 10
Understanding the MFP control panel  ........................................................................................................... 11
Using the LCD touch-screen buttons  ............................................................................................................. 17
Menus ............................................................................................................................................................ 23
Chapter 2: Copying  ........................................................................................................... 24
Quick copy  ..................................................................................................................................................... 24
Multiple page copying  .................................................................................................................................... 24
Using the flatbed  ............................................................................................................................................ 25
Understanding the copy screens and options  ................................................................................................ 25
Copying from one size to another  .................................................................................................................. 27
Making transparencies  ................................................................................................................................... 27
Copying to letterhead ..................................................................................................................................... 27
Copying photographs ..................................................................................................................................... 27
Making copies using media from a selected tray  ........................................................................................... 28
Copying mixed-sized media ........................................................................................................................... 28
Setting the duplex option  ............................................................................................................................... 29
Reducing and enlarging copies  ..................................................................................................................... 29
Adjusting copy quality  .................................................................................................................................... 29
Setting collation options  ................................................................................................................................. 30
Placing separator sheets between copies  ..................................................................................................... 30
Setting paper saving options  ......................................................................................................................... 30
Placing the date and time at the top of each page  ........................................................................................ 31
Placing an overlay message on each page  ................................................................................................... 31
Creating a custom job (job build)  ................................................................................................................... 31
Canceling a copy job  ..................................................................................................................................... 32
Copy tips  ........................................................................................................................................................ 32
Chapter 3: E-mail  ..............................................................................................................33
Entering an e-mail address  ............................................................................................................................ 33
Using a shortcut number  ................................................................................................................................ 33
Using the address book  ................................................................................................................................. 34
E-mailing to a profile  ...................................................................................................................................... 34
Adding e-mail subject and message information  ........................................................................................... 34
Changing the output file type  ......................................................................................................................... 35
E-mailing color documents  ............................................................................................................................ 35
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X644eX646eX646dte
Input capacity 500 sheets 500 sheets 1000 sheets
Standard memory 256MB 256MB 256MB
Maximum memory capacity, non-network/
network768MB 768MB 768MB
Hard drive No Yes Yes
Option card connectors 1 1 1
Duplex ability Duplex in, simplex out Duplex in, simplex out Duplex in, duplex out
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Copy
Fax
E-mail
FT P
Status/
Supplies200.01 Paper jam, [x] pages 
jammed. Leave paper in bin.Menus
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MessageAction
42.xy Cartridge region mismatch
Note:x = the MFP region, y = the cartridge 
regionInstall the correct cartridge for the MFP region.
Region codes are:
MFP region Cartridge region Location
REGCDW 0  Worldwide
REGCDA 1  USA and Canada
REGCDE 2  EMEA
REGCDR  3  Asia Pacific Region
REGCDL 4  Latin America
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							Notices
137
Notices
European Community (EC) directives conformity 
Declaration of Conformity with Regard to the EU Directive 1999/5/EC (R&TTE Directive) in languages of the European 
Community.
EnglishHereby, Lexmark International Inc., declares that this Product is in compliance with the 
essential requirements and other relevant provisions of Directive 1999/5/EC.
SuomiValmistaja Lexmark International Inc. vakuuttaa täten että Product tyyppinen laite on direktiivin 
1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen mukainen.
NederlandsHierbij verklaart Lexmark International Inc. dat het toestel Product in overeenstemming is met 
de essentiële eisen en de andere relevante bepalingen van richtlijn 1999/5/EG
Bij deze verklaart Lexmark International Inc. dat deze Product voldoet aan de essentiële eisen 
en aan de overige relevante bepalingen van Richtlijn 1999/5/EC.
FrançaisPar la présente Lexmark International Inc. déclare que lappareil Product est conforme aux 
exigences essentielles et aux autres dispositions pertinentes de la directive 1999/5/CE
Par la présente, Lexmark International Inc. déclare que ce Product est conforme aux 
exigences essentielles et aux autres dispositions de la directive 1999/5/CE qui lui sont 
applicables
SvenskaHärmed intygar Lexmark International Inc. att denna Product står i överensstämmelse med de 
väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv 1999/
5/EG.
DanskUndertegnede Lexmark International Inc. erklærer herved, at følgende udstyr Product 
overholder de væsentlige krav og øvrige relevante krav i direktiv 1999/5/EF
GermanHiermit erklärt Lexmark International Inc., dass sich dieses Product in Übereinstimmung mit 
den grundlegenden Anforderungen und den anderen relevanten Vorschriften der Richtlinie 
1999/5/EG befindet. (BMWi)
Hiermit erklärt Lexmark International Inc. die Übereinstimmung des Gerätes Product mit den 
grundlegenden Anforderungen und den anderen relevanten Festlegungen der Richtlinie 1999/
5/EG. (Wien)
ΕλληνικάΜε την παρούσα Lexmark International Inc. δηλώνει οτι Product συµµορφώνεται προς τις 
ουσιώδεις απαιτησεις και τις λοιπές σχετικές διατάξεις της οδηγίας 1999/5/EK.
ItalianoCon la presente Lexmark International Inc. dichiara che questo Product è conforme ai requisiti 
essenziali e alle altre disposizioni pertinenti stabilite dalla direttiva 1999/5/CE.
EspañolPor medio de la presente Lexmark International Inc. declara que el Product cumple con los 
requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles de la Directiva 
1999/5/CE
PortuguêsLexmark International Inc. declara que este Product está conforme com os requisitos 
essenciais e outras provisões da Directiva 1999/5/CE.
ČeskyLexmark International Inc. tímto prohlašuje, že tento výrobek s typovým oznacením Product 
vyhovuje základním požadavkům a dalším ustanovením směrnice 1999/5/ES, které se na 
tento výrobek vztahují.
MagyarLexmark International Inc. ezennel kijelenti, hogy ez a Product termék megfelel az alapvető 
követelményeknek és az 1999/5/EC irányelv más vonatkozó ndelkezéseinek.
EestiKäesolevaga kinnitab Lexmark International Inc. seadme Product vastavust direktiivi 1999/5/
EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele.
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							Notices
138
Notices
This product is in conformity with the protection requirements of EC Council directives 89/336/EEC, 73/23/EEC, and 1999/
5/EC on the approximation and harmonization of the laws of the Member States relating to electromagnetic compatibility 
and safety of electrical equipment designed for use within certain voltage limits and on radio equipment and 
telecommunications terminal equipment. The Official Declaration of Conformity may be viewed at www.lexmark.com/rtte.
Compliance is indicated by the following CE marking:
Radio interference notice
Warning: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. This Class A digital device is 
marketed for use in a commercial, industrial or business environment, and not intended for use in 
homes, or a home office.
CCC EMC notice
LatviskiAr šo Lexmark International Inc. deklarē, ka Product atbilst Direktīvas 1999/5/EK būtiskajām 
prasībām un citiem ar to saistītajiem noteikumiem.
LithuanianLexmark International Inc. deklaruoja, kad irenginys Product tenkina 1999/5/EB Direktyvos 
esminius reikalavimus ir kitas sios direktyvos nuostatas
Maltese
PolskiLexmark International Inc., deklarujemy z pelną odpowiedzialnością, że wyrób Product  
spełnia podstawowe wymagania i odpowiada warunkom zawartym w dyrektywie 1999/5/EC
SlovakLexmark International Inc. týmto vyhlasuje, že tento Product vyhovuje technickým 
požiadavkám a ďalším ustanoveniam smernice 1999/5/ES, ktoré sa na tento výrobok 
vz˙ahujú.
SlovenščinaS tem dokumentom Lexmark International Inc., izjavlja, da je ta Product v skladu z bistvenimi 
zahtevami in z drugimi ustreznimi določili Direktive 1999/5/EC
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							Notices
139
Notices
Japanese VCCI notice
If this statement appears on your product, the following statement is applicable.
Korean MIC statement
If this symbol appears on your product, the accompanying statement is applicable.
This equipment has undergone Type Approval/EMC registration as a business product. It should not be used in a 
residential area.
BSMI EMC notice
If this statement appears on your product, the accompanying statement is applicable. 
Part 68
This equipment complies with Part 68 of the FCC rules and the requirements adopted by the Administrative Council for 
Terminal Attachments (ACTA). On the back of this equipment is a label that contains, among other information, a product 
identifier in the format US:AAAEQ##TXXXX. If requested, this number must be provided to your telephone company.
This equipment uses the RJ-11C Universal Service Order Code (USOC) jack.
A plug and jack used to connect this equipment to the premises’ wiring and telephone network must comply with the 
applicable FCC Part 68 rules and requirements adopted by the ACTA. A compliant telephone cord and modular plug is 
provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See the 
Setup Sheet for more information.
The Ringer Equivalence Number (REN) is used to determine the number of devices that may be connected to a telephone 
line. Excessive RENs on a telephone line may result in the devices not ringing in response to an incoming call. In most but 
not all areas, the sum of RENs should not exceed five (5.0). To be certain of the number of devices that may be connected 
to a line, as determined by the total RENs, contact your local telephone company. For products approved after July 23, 
2001, the REN for this product is part of the product identifier that has the format US:AAAEQ##TXXXX. The digits 
represented by ## are the REN without a decimal point (for example, 03 is a REN of 0.3). For earlier products, the REN is 
shown separately on the label.
If this equipment causes harm to the telephone network, the telephone company will notify you in advance that temporary 
discontinuance of service may be required. If advance notice is not practical, the telephone company will notify the 
customer as soon as possible. You will also be advised of your right to file a complaint with the FCC.
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							Notices
140
Notices
The telephone company may make changes in its facilities, equipment, operations or procedures that could affect the 
operation of this equipment. If this happens, the telephone company will provide advance notice in order for you to make 
necessary modifications to maintain uninterrupted service.
If you experience trouble with this equipment, for repair or warranty information, contact Lexmark International, Inc. at 
www.Lexmark.com or your Lexmark representative. If the equipment is causing harm to the telephone network, the 
telephone company may request that you disconnect the equipment until the problem is resolved.
This equipment contains no user serviceable parts. For repair and warranty information, contact Lexmark International, Inc.  
See the previous paragraph for contact information.
Connection to party line service is subject to state tariffs. Contact the state public utility commission, public service 
commission, or corporation commission for information.
If your home has specially wired alarm equipment connected to the telephone line, ensure the installation of this equipment 
does not disable your alarm equipment. If you have questions about what will disable alarm equipment, consult your 
telephone company or a qualified installer.
Telephone companies report that electrical surges, typically lightning transients, are very destructive to customer terminal 
equipment connected to AC power sources. This has been identified as a major nationwide problem. It is recommended 
that the customer install an appropriate AC surge arrestor in the AC outlet to which this device is connected. An appropriate 
AC surge arrestor is defined as one that is suitably rated, and certified by UL (Underwriters Laboratories), another NRTL 
(Nationally Recognized Testing Laboratory), or a recognized safety certification body in the country/region of use. This is to 
avoid damage to the equipment caused by local lightning strikes and other electrical surges.
The Telephone Consumer Protection Act of 1991 makes it unlawful for any person to use a computer or other electronic 
device, including fax machines, to send any message unless said message clearly contains in a margin at the top or bottom 
of each transmitted page or on the first page of the transmission, the date and time it is sent and an identification of the 
business or other entity, or other individual sending the message, and the telephone number of the sending machine or 
such business, other entity, or individual. (The telephone number provided may not be a 900 number or any other number 
for which charges exceed local or long-distance transmission charges.)
See the section in this publication entitled Fax setup in order to program this information into your fax machine.
Other telecommunications notices
Notice to users of the Canadian telephone network
This product meets the applicable Industry Canada technical specifications.
The Ringer Equivalence Number (REN) is an indication of the maximum number of terminals allowed to be connected to a 
telephone interface. The terminus of an interface may consist of any combination of devices, subject only to the 
requirement that the sum of the RENs of all the devices does not exceed five. The modem REN is located on the rear of the 
equipment on the product labeling.
Telephone companies report that electrical surges, typically lightning transients, are very destructive to customer terminal 
equipment connected to AC power sources. This has been identified as a major nationwide problem. It is recommended 
that the customer install an appropriate AC surge arrestor in the AC outlet to which this device is connected. An appropriate 
AC surge arrestor is defined as one that is suitably rated, and certified by UL (Underwriter’s Laboratories), another NRTL 
(Nationally Recognized Testing Laboratory), or a recognized safety certification body in the country/region of use. This is to 
avoid damage to the equipment caused by local lightning strikes and other electrical surges.
This equipment uses CA11A telephone jacks.
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