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Lexmark C792 Manual

Made by: Lexmark
Type: Manual
Category: Printer
Pages: 11
Size: 0.11 MB

 

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Print quality guide

Many print quality problems can be solved by replacing a supply or maintenance item that is approaching the end of its intended
life. Check the printer control panel for a message about a printer supply.

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 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.

A

VOID

 

TEXTURED

 

PAPER

 

WITH

 

ROUGH

 

FINISHES

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

PRINT

 

CARTRIDGE

Replace the worn or defective print cartridge.

M

AKE

 

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.

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 quality guide

Page 1 of 10

 


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Repeating defects appear on prints

Try one or more of the following:

R

EPLACE

 

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

R

EPLACE

 

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

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

 

CARTRIDGE

Replace the defective print cartridge.

M

AKE

 

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.

Print quality guide

Page 2 of 10

 


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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 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.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

DEFECTIVE

OR

 

EMPTY

 

PRINT

 

CARTRIDGE

Replace the worn, defective, or empty print cartridge.

Uneven print density

A

B

C

D

E

A

B

C

D

E

A

B

C

D

E

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

OR

 

WORN

 

PRINT

 

CARTRIDGE

Replace the worn or defective print cartridge.

Print is too dark

Try one or more of the following:

Print quality guide

Page 3 of 10

 


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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.

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.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

PRINT

 

CARTRIDGE

Replace the defective print cartridge.

Print is too light

Try one or more of the following:

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 4 of 10

 


background image

M

AKE

 

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.

1

Remove 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.

2

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

3

Reinsert 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.

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

DEFECTIVE

 

PRINT

 

CARTRIDGE

Replace the defective print cartridge.

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.

Gray background on prints

ABCDE

ABCDE

ABCDE

M

AKE

 

SURE

 

THERE

 

IS

 

NO

 

WORN

 

OR

 

DEFECTIVE

 

PRINT

 

CARTRIDGE

Replace the worn or defective print cartridge.

Print quality guide

Page 5 of 10

 


background image

Shadow images appear on prints

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.

M

AKE

 

SURE

 

THE

 

PRINT

 

CARTRIDGE

 

IS

 

NOT

 

LOW

 

ON

 

TONER

When 

88.xx [color] cartridge low

 appears, make sure that toner is distributed evenly among all four print cartridges

or whichever color has the shadow images.

1

Remove 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.

2

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

3

Reinsert the print cartridge.

Note: 

If print quality does not improve, replace the print cartridge of the color that is giving a shadow.

If the problem continues, the printer may need to be serviced. For more information, contact customer support.

Toner fog or background shading appears on a page

Try one or more of the following:

M

AKE

 

SURE

 

PRINT

 

CARTRIDGES

 

ARE

 

INSTALLED

 

CORRECTLY

 

AND

 

ARE

 

NOT

 

DEFECTIVE

Reinstall or replace the print cartridge.

M

AKE

 

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.

Print quality guide

Page 6 of 10

 


background image

M

AKE

 

SURE

 

THE

 

FUSER

 

IS

 

NOT

 

WORN

 

OR

 

DEFECTIVE

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

M

AKE

 

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.

R

ECALIBRATE

 

THE

 

PRINTER

Perform color adjust from the printer control panel Quality menu.

C

HECK

 

THE

 

SOFTWARE

 

PROGRAM

 

OR

 

APPLICATION

The software program or application may have specified an off-white background.

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 7 of 10

 


background image

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.

Skewed print

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

C

HECK

 

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.

C

HECK

 

THE

 

PAPER

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

Incorrect margins

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.

Print quality guide

Page 8 of 10

 


background image

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.

Printer is printing blank pages

Try one or more of the following:

M

AKE

 

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.

M

AKE

 

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:

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.

If the problem continues, then the printer may need to be serviced. For more information, contact customer support.

Solid color or black pages appear on prints

Print quality guide

Page 9 of 10

 


background image

M

AKE

 

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.

If the problem continues, the printer may need to be serviced. For more information, contact customer support.

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 quality guide

Page 10 of 10