Lexmark X792 Manual

							CHECK THE PAPER TYPE AND WEIGHT SETTINGS
Make sure the paper type and weight settings match the paper loaded in the tray or feeder:
1From the printer control panel Paper menu, check the Paper Type and Paper Weight settings.
2Before sending the print job, specify the correct paper type setting:
For Windows users, specify the paper type from Print Properties.
For Macintosh users, specify the paper type from the Print dialog.
AVOID TEXTURED PAPER WITH ROUGH FINISHES
MAKE SURE THERE IS NO DEFECTIVE PRINT CARTRIDGE
Replace the worn or defective print cartridge.
MAKE SURE THE TRANSFER BELT IS NOT DEFECTIVE
Replace the defective transfer belt. For more information, see the instruction sheet that came with the replacement
part.
MAKE SURE THE FUSER IS NOT DEFECTIVE
Replace the defective fuser. For more information, see the instruction sheet that came with the replacement part.
Print is too dark
Try one or more of the following:
LOAD PAPER FROM A FRESH PACKAGE
The paper may have absorbed moisture due to high humidity. Store paper in its original wrapper until you use it.
AVOID TEXTURED PAPER WITH ROUGH FINISHES
CHECK THE PAPER TYPE SETTING
Make sure the Paper Type setting matches the paper loaded in the tray or feeder:
From the printer control panel Paper menu, check the Paper Type setting.
For Windows users, check this setting from Print Properties. Troubleshooting281 
						

							For Macintosh users, check this setting from the Print dialog.
MAKE SURE THERE IS NO DEFECTIVE PRINT CARTRIDGE
Replace the defective print cartridge.
Print is too light
Try one or more of the following:
LOAD PAPER FROM A FRESH PACKAGE
The paper may have absorbed moisture from high humidity. Store paper in its original wrapper until you use it.
AVOID TEXTURED PAPER WITH ROUGH FINISHES
CHECK THE PAPER TYPE SETTING
Make sure the Paper Type setting matches the paper loaded in the tray or feeder:
From the printer control panel Paper menu, check the Paper Type setting.
For Windows users, check this setting from Print Properties.
For Macintosh users, check this setting from the Print dialog.
MAKE SURE THE PRINT CARTRIDGE IS NOT LOW ON TONER
When 88.xx [color] cartridge low appears, make sure the toner is distributed evenly within the print
cartridge.
1Remove the print cartridge.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
2Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.
3Reinsert the print cartridge.
Note: If print quality does not improve, then replace the print cartridge.
If the problem continues, then the printer may need to be serviced. For more information, contact customer support. Troubleshooting282 
						

							MAKE SURE THERE IS NO DEFECTIVE PRINT CARTRIDGE
Replace the defective print cartridge.
Printer is printing blank pages
Try one or more of the following:
MAKE SURE THERE IS NO PACKING MATERIAL LEFT ON THE TONER OR PRINT CARTRIDGE
Remove the cartridge and make sure the packing material is properly removed. Reinstall the cartridge.
MAKE SURE THE TONER OR PRINT CARTRIDGE IS NOT LOW ON TONER
When 88.xx [color] cartridge low appears, make sure that toner is distributed evenly among all four
cartridges:
1Remove the cartridge.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
2Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.
3Reinsert the cartridge.
Note: If print quality does not improve, then replace the cartridge of the color that is not printing.
If the problem continues, then the printer may need to be serviced. For more information, contact customer support.
Repeating defects appear on prints
Try one or more of the following: Troubleshooting283 
						

							REPLACE THE PRINT CARTRIDGE
Replace the print cartridge of the color with the repeating defect, if the print defects occur in the following instances:
in every 37.7 mm (1.48 in.) of the page
in every 41.6 mm (1.64 in.) of the page
in every 42.7 mm (1.68 in.) of the page
in every 94.3 mm (3.71 in.) of the page
REPLACE THE FUSER
Replace the fuser if print defects occur in the following instances:
in every 95.0 mm (3.74 in.) of the page
in every 146.7 mm (5.78 in.) of the page
Skewed print
These are possible solutions. Try one or more of the following:
CHECK THE PAPER GUIDES
Move the length and width guides in the tray to the correct positions for the paper size loaded.
Make sure the guides are not too far from the paper stack.
Make sure the guides are not pressing too lightly against the paper stack.
CHECK THE PAPER
Make sure you are using paper that meets the printer specifications.
Solid color or black pages appear on prints
MAKE SURE THE PRINT CARTRIDGES ARE INSTALLED CORRECTLY, ARE NOT DEFECTIVE AND NOT LOW ON TONER
Remove the print cartridges.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
Reinsert the print cartridges.
Note: If the quality does not improve, replace the print cartridges. Troubleshooting284 
						

							If the problem continues, the printer may need to be serviced. For more information, contact customer support.
Black or white streaks appear on transparencies or paper
Try one or more of the following:
ENSURE THAT THE FILL PATTERN IS CORRECT
If the fill pattern is incorrect, choose a different fill pattern from your software program.
CHECK THE PAPER TYPE
Use only the recommended transparencies.
Ensure that the Paper Type setting matches what is loaded in the tray or feeder.
Ensure that the Paper Texture setting is correct for the type of paper or specialty media loaded in the tray or
feeder.
MAKE SURE THE PRINT CARTRIDGE IS NOT LOW ON TONER
When 88.xx [color] cartridge low appears, make sure the toner is distributed evenly within the print
cartridge:
1Remove the print cartridge.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
2Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.
3Reinsert the print cartridge.
If the problem continues, the printer may need to be serviced. For more information, contact Customer Support.
Streaked horizontal lines appear on prints
ABCDE
ABCDE
ABCDE
Troubleshooting285 
						

							Try one or more of the following:
SELECT ANOTHER TRAY OR FEEDER
From the printer control panel Paper Menu, select Default Source.
For Windows users, select the paper source from Print Properties.
For Macintosh users, select the paper source from the Print dialog and pop‑up menus.
MAKE SURE THERE IS NO WORN, DEFECTIVE, OR EMPTY PRINT CARTRIDGE
Replace the worn, defective, or empty print cartridge.
Streaked vertical lines
ABCDE
ABCDE
ABCDE
These are possible solutions. Try one or more of the following:
THE TONER IS SMEARED
Select another tray or feeder to feed paper for the job:
From the printer control panel, select the Default Source from the Paper Menu.
For Windows users, select the paper source from Print Properties.
For Macintosh users, select the paper source from the Print dialog and pop‑up menus.
A TONER CARTRIDGE IS DEFECTIVE
Replace the defective toner cartridge.
THE TRANSFER MODULE IS WORN OR DEFECTIVE
Replace the transfer module.
Toner fog or background shading appears on a page
Try one or more of the following:
MAKE SURE PRINT CARTRIDGES ARE INSTALLED CORRECTLY AND ARE NOT DEFECTIVE
Reinstall or replace the print cartridge. Troubleshooting286 
						

							MAKE SURE THE TRANSFER BELT IS NOT WORN OR DEFECTIVE
Replace the transfer belt. For more information, see the instruction sheet that came with the replacement part.
MAKE SURE THE FUSER IS NOT WORN OR DEFECTIVE
Replace the fuser. For more information, see the instruction sheet that came with the replacement part.
MAKE SURE THERE IS NO TONER IN THE PAPER PATH
Clean any visible toner from the paper path. If the problem persists, then contact customer support.
RECALIBRATE THE PRINTER
Perform color adjust from the printer control panel Quality menu.
CHECK THE SOFTWARE PROGRAM OR APPLICATION
The software program or application may have specified an off‑white background.
Toner rubs off
These are possible solutions. Try one or more of the following:
CHECK THE PAPER TYPE SETTING
Make sure the paper type setting matches the paper loaded in the tray.
CHECK THE PAPER WEIGHT AND PAPER TEXTURE SETTINGS
Change the Paper Weight from Normal to Heavy. If necessary, change the Paper Texture from Normal to Rough in
the printer control panel Paper menu.
THE FUSER IS WORN OR DEFECTIVE
Replace the fuser. Troubleshooting287 
						

							Toner specks
These are possible solutions. Try one or more of the following:
THE TONER CARTRIDGES ARE WORN OR DEFECTIVE
Replace the defective or worn cartridges.
THERE IS TONER IN THE PAPER PATH
Contact Customer Support.
Transparency print quality is poor
Try one or more of the following:
CHECK THE TRANSPARENCIES
Use only transparencies that meet the printer specifications.
CHECK THE PAPER TYPE SETTING
Make sure the paper type setting is set to Transparency:
1From the printer control panel Paper menu, check the Paper Type setting.
2Before sending the job to print, specify the correct type setting:
For Windows users, specify the type from Print Properties.
For Macintosh users, specify the type from the Print dialog.
Uneven print density
ABCDE
ABCDE
ABCDE
Troubleshooting288 
						

							MAKE SURE THERE IS NO DEFECTIVE OR WORN PRINT CARTRIDGE
Replace the worn or defective print cartridge.
Solving color quality 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.
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.
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. Troubleshooting289 
						

							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.
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.
Troubleshooting290