Xerox 6250B - Phaser Color Laser Printer User manual

Phaser® 6250 Color Laser Printer
Copyright © 2003 Xerox Corporation. All Rights Reserved.
4-12
Print-Quality Problems
This topic includes:
■"Paper Type" on page 4-12
■"Diagnosing Print-Quality Problems" on page 4-12
■"Color Settings" on page 4-16
■"Color Calibration" on page 4-16
■"Lighten/Darken Colors" on page 4-16
■"Balance Colors" on page 4-17
■"Calibrate Margins" on page 4-18
Your printer is designed to produce consistently high-quality color prints. If you observe print-
quality problems, use the information on these pages to troubleshoot the problem.
For detailed, online support information, go to www.xerox.com/officeprinting/infoSMART.
For suggestions on using color, go to www.colorconnection.xerox.com.
Paper Type
Caution
If you change the type of paper in a tray, you must change the paper type on the front
panel to match the paper that you loaded. If you fail to do this, print-quality problems
can occur and the fuser can be damaged.
For best results, use only Xerox Phaser Color Printing Media. They are guaranteed to
produce excellent results on your Phaser printer—your Phaser printer and Phaser media are
Made for Each Other.
Diagnosing Print-Quality Problems
Caution
Damage caused by using unsupported paper, transparencies, and other speciality media is
not covered by the Xerox warranty, service agreement, or Total Satisfaction Guarantee.

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-13
Diagnosing Print-Quality Problems
Problem Solution
Lines, Smudges, or Streaks
Black and/or colored areas appear on the page
in all colors and/or in non-printed areas.
1. Verify that the paper you are using is the correct
type for the printer and is properly loaded. For
information on supported paper types and
weights, at the printer’s front panel, select
Troubleshooting, select Paper Jams, select
Paper Tips Page, then press the OK button.
2. Verify that the paper loaded in the tray matches
the paper type selected at the printer's front
panel and in the printer driver.
3. At the printer's front panel, select
Troubleshooting, select Print Quality
Problems, select Remove Print Smears, then
press the OK button.
Three cleaning pages will run through the printer.
Repeat this step until no toner appears on the
pages.
4. If the problem continues, replace the imaging
unit.
Repeating Defects
Marks or voids are regularly repeated on the
page.
1. At the printer’s front panel, select
Troubleshooting, select Print Quality
Problems, select Repeating Defects Page,
then press the OK button to print.
A page prints with guides to identify the defect
source.
2. Replace the supply identified on the Repeating
Defects Page to correct the problem.
Colors Align Incorrectly
Printed items appear to be blurry, hazy, or they
have halos.
1. Verify that the printer is on a solid, level, flat
surface.
2. At the printer’s front panel, select
Troubleshooting, select Print Quality
Problems, select Color Registration, then
press the OK button.
a. Vertical printing issues are corrected
automatically when the Color Registration
page is printed.
b. Horizontal printing issues are corrected when
you follow the directions provided on the
Color Registration page.
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P6250 (2400 x 600dpi)
P6250 (2400 x 600dpi)

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-14
Fusing Is Incomplete
Toner appears to be missing from the print, or is
easy to rub off.
1. Verify that the paper you are using is the correct
type for the printer and is properly loaded. For
information on supported paper types and
weights, a the printer’s front panel, select
Troubleshooting, select Paper Jams, select
Paper Tips Page, then press the OK button to
print.
2. Verify that the paper loaded in the tray matches
the paper type selected at the printer's front
panel and in the printer driver.
3. If the problem continues, open and close the
selected paper tray or re-insert the paper loaded
in Tray 1 (MPT). The printer’s front panel prompts
you to confirm or change the paper type.
4. Select Change, then press the OK button. Set
the paper type to the next heavier type of
paper, then press the OK button.
NoteNoteNote
Paper types from lightest to heaviest are: Plain
Paper, Heavy Plain Paper, Thin Card Stock,
Thick Card Stock.
All Colors Too Light or Too Dark
Colors appear faded or too dark.
1. Use a different Color Correction mode. See the
“Color Settings” section on the following page for
detailed descriptions of the available settings.
a. For the best results for most documents, set
the TekColor Correction to Automatic.
b. If the print is too light, verify that the Print-
Quality Mode in the printer driver is not set
to Draft Mode.
2. Adjust the light or darkness levels.
At the printer’s front panel, select
Troubleshooting, select Print Quality
Problems, select Calibrate Colors,then select
Print Tutorial Page. Follow the procedure to
lighten or darken colors.
Poor Transparency Print Quality
Possible print-quality defects are occurring on
transparency film, such as:
■Light and/or dark spots
■Smeared toner
■Light bands on print
■Use only Phaser 25-Series Premium
Transparency Film.
■Using non-Phaser 25-Series Premium
Transparency Film may cause print-quality
problems or damage to the printer's fuser.
Damage caused by using unsupported media is
not covered by the Xerox warranty, service
agreement, or Total Satisfaction Guarantee.
■For a list of transparency part numbers, print the
Paper Tips Page.
At the printer’s front panel, select Information,
select Information Pages, select Paper Tips
Page, then press the OK button.
Diagnosing Print-Quality Problems (Continued)
Problem Solution

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-15
Grays Not Neutral
The grays on the printed page are not neutral;
they contain color tints.
■Calibrate the printer’s colors. Calibrating adjusts
the lightness level and color balance of the
printer.
At the printer’s front panel, select
Troubleshooting, select Print Quality
Problems, select Calibrate Colors,select
Tutorial Page then press the OK button.
■Follow the instructions on the Tutorial Page to
lighten or darken colors.
Colors Vary Between Computers
The colors printed from one computer do not
match the colors printed from a different
computer.
1. Confirm that the driver settings for Print-Quality
and Color Correction are identical on both
computers.
2. Adjust the settings as needed. Driver settings
override the settings made at the printer’s front
panel.
Color Settings Not Applied
Changing color settings at the printer’s front
panel does not affect the colors in the printed
document.
In the printer driver, change the settings for Print-
Quality and Color Correction. Driver settings
override the settings made at the printer’s front
panel.
Colors Do Not Match
The color produced by the printer is different
from the color that it must match.
1. Confirm that the settings for Print-Quality and
Color Correction are identical in the printer
driver and at the printer’s front panel.
2. At the printer’s front panel, select Information
Pages, select Sample Pages, select either RGB
Sampler Pages or CMYK Sampler Pages, then
press the OK button to print a color sampler.
3. Use the values on the color sampler to set the
colors in your document.
For detailed instructions about color matching, see
“Using Color” in the “Printing” section on the User
Documentation CD-ROM, or access the infoSMART
Knowledge Base at www.xerox.com/officeprinting/
infoSMART.
Printed Colors Do Not Match Monitor Colors
The color produced by the printer looks different
from the color that appears on the monitor.
For information about color matching between the
monitor and the printed document, see the
infoSMART Knowledge Base at: www.xerox.com/
officeprinting/infoSMART. View document # 11202.
PANTONE®Colors Do Not Match
Colors printed on the document do not match
the Phaser 6250 PANTONE color chart.
For information about PANTONE color matching,
see the infoSMART Knowledge Base at
www.xerox.com/officeprinting/infoSMART. View
document # 7456.
Diagnosing Print-Quality Problems (Continued)
Problem Solution

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-16
Color Settings
The print-quality mode and TekColorcorrection directly control the quality of your prints. You
can change these settings in the printer driver or at the printer’s front panel.
Note
Driver settings override the printer’s front panel settings.
For more information on using color, go to Reference/Printing/Using Color on the User
Documentation CD-ROM.
Color Calibration
Color calibration procedures adjust the printer for optimal color output. Color settings may
need adjustment upon initial printer setup or when toner cartridges and imaging units are
replaced. There are two procedures: “Lighten/Darken Colors” and “Balance Colors.” If the
overall image appears either too light or dark, use the Lighten/Darken Colors procedure. If a
finer adjustment of the primary colors (cyan, magenta, and yellow) is needed, continue with
the Balance Colors procedure.
Lighten/Darken Colors
The Lighten/Darken Colors procedure uniformly increases or decreases each primary color
(cyan, magenta, yellow, and black) to produce a lighter or darker image.
Procedure:
1. At the printer’s front panel, select Troubleshooting, then press the OK button.
2. Select Print Quality Problems, then press the OK button.
3. Select Calibrate Colors, then press the OK button.
4. Select Lighten/Darken Colors, then press OK button. The “Color Reference Page”
prints. Use this page to evaluate the lightness/darkness of the image. The printer's current
Lighten/Darken Value is displayed on the page.
a. Select Lightness Level, then press the OK button.
b. Press the Up or Down Arrow buttons to change the value from -5 (lightest) to 5
(darkest), then press the OK button. The “Color Reference Page” automatically prints
using the new lighten/darken value. Repeat this procedure until you achieve the
desired result.
5. To complete the procedure, select one of the following options:
■Accept Changes and Continue: Saves the new value and returns to the
Calibrate Colors menu.
■Accept Changes and Exit: Saves the new value and returns to the Main menu.
■Discard Changes and Exit: Returns to the Main menu without saving changes.

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-17
Balance Colors
The Balance Colors procedure sets the balance between the primary colors (cyan, magenta,
and yellow) to simulate black.
Procedure:
1. At the printer’s front panel, select Calibrate Colors, then press the OK button.
2. Select Balance Colors, then press the OK button.
3. Follow the steps on the “Light Color Balance Page” until the desired adjustment is
achieved.
4. Follow the steps on the “Dark Color Balance Page” until the desired adjustment is
achieved.
Each of the color balance information pages
(like the page illustrated on the right) contains
a large cluster of circles, numbered from 0 to
54, that vary in hue.
The center circle (0) should match or appear
to blend with some portion of its surrounding
hexagonal gray ring. The circle displays a
color shift if one or more of the colors are
printing with a different density. For example,
if cyan is printing lighter than normal, the
circle will appear redder.
Light Color Balance Adjustment
0
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Phaser

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-18
Calibrate Margins
Use the Calibrate Margins menu to adjust the printed area to fit within the edges of the
paper. The imaging area appears as a dashed rectangle; the printer does not print outside this
rectangle.
Adjusting Side 1 Margins
1. At the printer’s front panel, select Troubleshooting, then press the OK button.
2. Select Print Quality Problems, then press the OK button.
3. Select Calibrate Margins, then press the OK button to print the page.
4. To move Side 1 “A” margin:
a. Select Adjust Side 1 “A” Margin, then press the OK button.
b. Press the Up arrow to move the margin as illustrated.
5. To move Side 1 “B” margin:
a. Select Adjust Side 1 “B” Margin, then press the OK button.
b. Press the Up arrow to move the margin as illustrated.
You can adjust the settings from -40 to +40 units. The thickness of the rectangle’s dashed line
is 1 unit. 12 units move the rectangle 1 mm. The maximum distance the rectangle can be
moved (-40 to +40) is 6.7 mm.
To move up: increase
the Adjust Side 1 “A”
margin setting.
To move down:
decrease Adjust Side 1
“A” margin setting.
To move left: decrease
Adjust Side 1 “B” margin
setting.
To move right: increase
Adjust Side 1 “B” margin
setting.
Calibrate Margins
B- B+
A+
A-
Calibrate Margins
Calibrate Margins Calibrate Margins
Phaser
Phaser
Phaser Phaser

Print-Quality Problems
Phaser® 6250 Color Laser Printer
4-19
Adjusting Side 2 Margins with Duplex Option
1. With side 1 facing you, hold the print up to a strong light. Note the shadow of the solid
lines printed on side 2.
2. To move the dashed rectangle you see on the page to the position you want:
a. Select Side 2 “A” Margin, then press the OK button.
b. Press the Up arrow to move the margin as illustrated.
c. Select Side 2 “B” Margin, then press the OK button.
d. Press the Up arrow to move the margin as illustrated.
3. Reprint this page to verify the adjustment.
A
B
A
B
+
-
+
-