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Lexmark C746 Manual

C748

Made by: Lexmark
Type: Manual
Category: Printer
Pages: 14
Size: 0.14 MB

 

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Print quality guide

If the solutions here do not correct the problem, then contact customer support. You may have a printer part that requires
adjustment or replacement.

Characters have jagged or uneven edges

If you are using downloaded fonts, verify that the fonts are supported by the printer, the host computer, and the software
program.

Clipped images

Try one or more of the following:

C

HECK

 

THE

 

GUIDES

Move the width and length guides in the tray to the correct positions for the paper size loaded.

C

HECK

 

THE

 

PAPER

 

SIZE

 

SETTING

Make sure the paper size setting matches the paper loaded in the tray:

1

From the printer control panel Paper menu, check the Paper Size setting.

2

Before sending the job to print, specify the correct size setting:

For Windows users, specify the size from Print Properties.

For Macintosh users, specify the size from the Page Setup dialog.

Gray background on prints

ABCDE

ABCDE

ABCDE

Try one or more of the following:

Print quality guide

Page 1 of 13

 


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C

HECK

 

THE

 

BACKGROUND

 

DARKNESS

 

OR

 

REMOVAL

 

SETTING

Adjust the darkness to a lighter setting.

Increase the background removal setting.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

 

OR

 

DEFECTIVE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn or defective cartridge.

Incorrect margins

A B C D

A B C D

A B C D

These are possible solutions. Try one or more of the following:

C

HECK

 

THE

 

PAPER

 

GUIDES

Move the guides in the tray to the correct positions for the paper size loaded.

C

HECK

 

THE

 

PAPER

 

SIZE

 

SETTING

Make sure the paper size setting matches the paper loaded in the tray:

1

From the printer control panel Paper menu, check the Paper Size setting.

2

Before sending the job to print, specify the correct size setting:

For Windows users, specify the size from Print Properties.

For Macintosh users, specify the size from the Page Setup dialog.

Light colored line, white line, or incorrectly colored line appears on prints

ABCDE
ABCDE

A

B

C

D

E

A

B

C

D

E

A

B

C

D

E

Try one or more of the following:

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn or defective cartridge.

Print quality guide

Page 2 of 13

 


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For more information, see the instruction sheet that came with the replacement part.

M

AKE

 

SURE

 

THE

 

TRANSFER

 

MODULE

 

IS

 

NOT

 

DEFECTIVE

Replace the defective transfer module.

For more information, see the instruction sheet that came with the replacement part.

Paper curl

Try one or more of the following:

C

HECK

 

THE

 

PAPER

 

TYPE

 

AND

 

WEIGHT

 

SETTINGS

Make sure the paper type and weight settings match the paper loaded in the tray or feeder:

1

From the printer control panel Paper menu, check the Paper Type and Paper Weight settings.

2

Before 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.

L

OAD

 

PAPER

 

FROM

 

A

 

FRESH

 

PACKAGE

Paper absorbs moisture due to high humidity. Store paper in its original wrapper until you use it.

Print irregularities

Try one or more of the following:

L

OAD

 

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.

C

HECK

 

THE

 

PAPER

 

TYPE

 

AND

 

WEIGHT

 

SETTINGS

Make sure the paper type and weight settings match the paper loaded in the tray or feeder:

1

From the Paper menu on the printer control panel, check the Paper Type and Paper Weight settings.

2

Before 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.

Print quality guide

Page 3 of 13

 


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A

VOID

 

TEXTURED

 

PAPER

 

WITH

 

ROUGH

 

FINISHES

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn or defective cartridge.

M

AKE

 

SURE

 

THE

 

TRANSFER

 

MODULE

 

IS

 

NOT

 

DEFECTIVE

Replace the defective transfer module.

For more information, see the instruction sheet that came with the replacement part.

M

AKE

 

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:

C

HECK

 

THE

 

DARKNESS

BRIGHTNESS

AND

 

CONTRAST

 

SETTINGS

From the Quality menu on the printer control panel, select a lower value for these settings.

For Windows users, change these settings from Print Properties.

For Macintosh users:

1

Choose 

File

 > 

Print

.

2

From the print options pop-up menu, choose 

Printer Features

.

3

Choose a lower value for the Toner Darkness, Brightness, and Contrast settings.

L

OAD

 

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.

Print quality guide

Page 4 of 13

 


background image

A

VOID

 

TEXTURED

 

PAPER

 

WITH

 

ROUGH

 

FINISHES

C

HECK

 

THE

 P

APER

 T

YPE

 

SETTING

Make sure the paper type setting matches the paper loaded in the tray or feeder:

From the Paper menu on printer control panel, check the Paper Type setting.

For Windows users, check this setting from Print Properties.

For Macintosh users, check this setting from the Print dialog.

Print is too light

Try one or more of the following:

C

HECK

 

THE

 

DARKNESS

BRIGHTNESS

AND

 

CONTRAST

 

SETTINGS

The Toner Darkness setting may be too light, the Brightness setting may be too light, or the Contrast setting may be too low.

Change these settings from the printer control panel Quality menu.

For Windows users, change these settings from Print Properties

For Macintosh users:

1

Choose 

File

 > 

Print

.

2

From the print options pop-up menu, choose 

Printer Features

.

3

Choose a higher value for the Toner Darkness, Brightness, and Contrast settings.

L

OAD

 

PAPER

 

FROM

 

A

 

FRESH

 

PACKAGE

The paper may have absorbed moisture from high humidity. Store paper in its original wrapper until you use it.

A

VOID

 

TEXTURED

 

PAPER

 

WITH

 

ROUGH

 

FINISHES

C

HECK

 

THE

 P

APER

 T

YPE

 

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.

Print quality guide

Page 5 of 13

 


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M

AKE

 

SURE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

 

IS

 

NOT

 

LOW

 

ON

 

TONER

1

Remove the cartridge.

Warning—Potential Damage: 

Be careful not to touch the photoconductor drum. Doing so may affect the print quality of

future print jobs.

2

Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.

3

Reinsert the cartridge.

Note: 

If print quality does not improve, then replace the cartridge of the color that is not printing.

C

ONTACT

 

CUSTOMER

 

SUPPORT

If the problem continues, then the printer may need to be serviced.

Printer is printing blank pages

Try one or more of the following:

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

PACKING

 

MATERIAL

 

LEFT

 

ON

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Remove the cartridge and make sure the packing material is properly removed. Reinstall the cartridge.

M

AKE

 

SURE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

 

IS

 

NOT

 

LOW

 

ON

 

TONER

1

Remove the cartridge.

Warning—Potential Damage: 

Be careful not to touch the photoconductor drum. Doing so may affect the print quality of

future print jobs.

2

Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.

3

Reinsert the cartridge.

Note: 

If print quality does not improve, then replace the cartridge of the color that is not printing.

C

ONTACT

 

CUSTOMER

 

SUPPORT

If the problem continues, then the printer may need to be serviced.

Print quality guide

Page 6 of 13

 


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Repeating defects appear on prints

)

)

)

Try one or more of the following:

R

EPLACE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the cartridge of the color with the repeating defect, if the defects occur in the following instances:

Every 33 mm (1.30 in.) of the page

Every 35.3 mm (1.39 in.) of the page

R

EPLACE

 

THE

 

PHOTOCONDUCTOR

Replace the photoconductor of the color with the repeating defect, if the defects occur in the following instances:

Every 28.3 mm (1.11 in.) of the page

Every 72.4 mm (2.85 in.) of the page

R

EPLACE

 

THE

 

FUSER

Replace the fuser if print defects occur in the following instances:

Every 47.4 mm (1.87 in.) of the page

Every 94.8 mm (3.73 in.) of the page

Every 113 mm (4.45 in.) of the page

Shadow images appear on prints

Print quality guide

Page 7 of 13

 


background image

C

HECK

 

THE

 

PAPER

 

TYPE

 

AND

 

WEIGHT

 

SETTINGS

Make sure the paper type and weight settings match the paper loaded in the tray:

1

From the Paper menu on the printer control panel, check the Paper Type and Paper Weight settings.

2

Before sending the job to print, 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.

M

AKE

 

SURE

 

THE

 

PHOTOCONDUCTOR

 

IS

 

NOT

 

DEFECTIVE

Replace the defective photoconductor.

M

AKE

 

SURE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

 

IS

 

NOT

 

LOW

 

ON

 

TONER

1

Remove the cartridge.

Warning—Potential Damage: 

Be careful not to touch the photoconductor drum. Doing so may affect the print quality of

future print jobs.

2

Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.

3

Reinsert the cartridge.

Note: 

If print quality does not improve, then replace the cartridge.

C

ONTACT

 

CUSTOMER

 

SUPPORT

If the problem continues, the printer may need to be serviced.

Skewed print

C

HECK

 

THE

 

PAPER

 

GUIDES

Move the guides in the tray to the correct positions for the paper size loaded.

C

HECK

 

THE

 

PAPER

Make sure you are using paper that meets the printer specifications.

Solid color or black pages appear on prints

Print quality guide

Page 8 of 13

 


background image

M

AKE

 

SURE

 

THE

 

PHOTOCONDUCTOR

 

IS

 

NOT

 

DEFECTIVE

 

AND

 

IS

 

INSTALLED

 

CORRECTLY

Remove and then reinstall the photoconductor. If the problem continues, then the photoconductor may need to be replaced.

M

AKE

 

SURE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGES

 

ARE

 

INSTALLED

 

CORRECTLY

ARE

 

NOT

 

DEFECTIVE

AND

NOT

 

LOW

 

ON

 

TONER

Remove the cartridges, shake each cartridge from side to side to redistribute the toner, and then reinstall them.

Warning—Potential Damage: 

Be careful not to touch the photoconductor drum. Doing so may affect the print quality of

future print jobs.

Reinsert the cartridges.

Note: 

If the quality does not improve, then replace the cartridges.

C

ONTACT

 

CUSTOMER

 

SUPPORT

If the problem continues, then the printer may need to be serviced.

Streaked horizontal lines appear on prints

ABCDE
ABCDE
ABCDE

Try one or more of the following:

S

ELECT

 

ANOTHER

 

TRAY

 

OR

 

FEEDER

From the printer control panel, navigate to:

Paper Menu

 > 

Default Source

 > select a tray or feeder > 

Submit

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.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

DEFECTIVE

OR

 

EMPTY

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn, defective, or empty cartridge.

Print quality guide

Page 9 of 13

 


background image

Streaked vertical lines appear on prints

ABCDE
ABCDE
ABCDE

Try one or more of the following:

S

ELECT

 

ANOTHER

 

TRAY

 

OR

 

FEEDER

From the printer control panel, navigate to:

Paper Menu

 > 

Default Source

 > select a tray or feeder > 

Submit

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.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

DEFECTIVE

OR

 

EMPTY

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn, defective, or empty cartridge.

M

AKE

 

SURE

 

THE

 

TRANSFER

 

MODULE

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

Replace the worn or defective transfer module.

Toner fog or background shading appears on the page

Try one or more of the following:

M

AKE

 

SURE

 

THE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

 

IS

 

INSTALLED

 

CORRECTLY

 

OR

 

IS

 

NOT

 

DEFECTIVE

Reinstall or replace the defective print or toner cartridge.

M

AKE

 

SURE

 

THE

 

TRANSFER

 

MODULE

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

Replace the worn or defective transfer module.

M

AKE

 

SURE

 

THE

 

PHOTOCONDUCTOR

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

Replace the worn or defective photoconductor.

M

AKE

 

SURE

 

THE

 

FUSER

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

Replace the worn or defective fuser.

Print quality guide

Page 10 of 13

 


background image

M

AKE

 

SURE

 

THE

 

PRINTER

 

HAS

 

BEEN

 

RECALIBRATED

 

RECENTLY

Select 

Color Adjust

 in the Quality menu.

M

AKE

 

SURE

 

THE

 

APPLICATION

 

HAS

 

NOT

 

SPECIFIED

 

AN

 

OFF

WHITE

 

BACKGROUND

Check the application settings.

M

AKE

 

SURE

 

NO

 

TONER

 

IS

 

IN

 

THE

 

PAPER

 

PATH

Contact customer support.

Toner rubs off

Try one or more of the following:

C

HECK

 

THE

 

PAPER

 

TYPE

 

AND

 

WEIGHT

 

SETTINGS

Make sure the paper type and weight settings match the paper loaded in the tray or feeder:

1

From the printer control panel Paper menu, check the Paper Type and Paper Weight settings. Change the Paper Weight
setting from Normal to Heavy.

2

Before 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.

C

HECK

 

THE

 

PAPER

 

TEXTURE

 

SETTING

From the printer control panel Paper menu, make sure the Paper Texture setting matches the paper loaded in the tray or feeder.
If necessary, change the Paper Texture setting from Normal to Rough.

M

AKE

 

SURE

 

THE

 

FUSER

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

Replace the worn or defective fuser. For more information, see the instruction sheet that came with the replacement part.

Print quality guide

Page 11 of 13

 


background image

Toner specks

Try one or more of the following:

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

 

OR

 

DEFECTIVE

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn or defective cartridge.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

TONER

 

IN

 

THE

 

PAPER

 

PATH

C

ONTACT

 

CUSTOMER

 

SUPPORT

If the problem continues, then the printer may need to be serviced.

Transparency print quality is poor

Try one or more of the following:

C

HECK

 

THE

 

TRANSPARENCIES

Use only transparencies that meet the printer specifications.

C

HECK

 

THE

 

PAPER

 

TYPE

 

SETTING

Make sure the paper type setting is set to Transparency:

1

From the printer control panel Paper menu, check the Paper Type setting.

2

Before 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.

Print quality guide

Page 12 of 13

 


background image

Uneven print density

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

OR

 

WORN

 

PRINT

 

OR

 

TONER

 

CARTRIDGE

Replace the worn or defective cartridge.

Print quality guide

Page 13 of 13