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...

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...

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
....

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....

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...

4
Contents
Chapter 1: Learning about the MFP  .................................................................................. 8
Identifying the MFP  .......................................................................................................................................... 8
Using the scanner  ............................................................................................................................................ 9
Configured models...

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...

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...

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...

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...