Xerox Phaser 7400DX User Manual

							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-7 2.Clean the LED bar for the problem color using the cleaning pad supplied with each new 
toner cartridge, or with a soft, clean cloth.
3.Visually inspect the toner cartridges and imaging units and remove any foreign material.
4.If the problem persists after cleaning the LED bars, check the toner for the problem color. 
Replace the toner if low.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer 4-8
5.
If the problem persists, lift out the imaging un it for the problem color, keeping the toner 
cartridge installed.
6. To avoid toner spills, hold the imaging unit  in an upright position. Slide the cover away 
from the shiny coating at the bottom of the un it, and lift it high  enough  to visually 
inspect it.
Caution: Do not touch the shiny co ating of the imaging unit.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-9 7.If the shiny coating has scratches or damage that align with the print defect, replace the 
imaging unit.
Note:Some slight scratching is normal.
Dark Lines, Smudges, or Streaks Through All Colors
Problem
The page has dark lines, smudges, or streaks in all colors.
Solution
■Verify that the paper you are using is the correct type for the printer. See 
Supported Paper and Media on page 3-3.
■Verify that the paper is properly loaded in the tray, and the correct paper type is selected in 
the Paper Tray Setup menu. See Loading Paper on page 3-8.
If the problem persists:
1.On the control panel, select Troubleshooting, and then press the OKbutton.
2.Select Print Quality Problems, and then press the OKbutton.
3.Select Color Test Pages, and then press the OKbutton to print the test pages.
■If the problem appears in all colors on the test pages, continue with the solution in this 
section.
■If the problem appears in one color on the test pages, see Light or Dark Lines or 
Smudges in One Color on page 4-5.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-10 4.Open the top cover and verify that the levers on the fuser are in the locked position.
5.Close the top cover.
6.On the control panel, select Troubleshooting, and then press the OKbutton.
7.Select Print Quality Issues, and then press the OKbutton.
8.Select Remove Print Smears, and then press the OKbutton. Five cleaning pages will 
run through the printer.
9.Repeat Steps 3–5 until the pages come out clean.
10.If the problem persists, replace the fuser.
11.If the problem persists after replacing the fuser, open the top cover.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-11 12.Grasp the imaging unit basket handle and lift up the basket.
13.Inspect the transfer unit. If you see excess toner on the transfer unit, replace it.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-12
All Colors Are Too Light or Too Dark
Problem
Colors appear faded or too dark.
Solution
1.Use a different TekColor correction in the printer driver.
Note:Setting the TekColor correction to Automatic produces the best results for most 
documents.
2.If the problem continues, in the Xerox printer driver (Windows 2000 or later), select the 
Te k C o l o r  tab, click the More Options button, and then adjust the Lightness level.
3.If the problem continues, calibrate the colors using the procedures on the Color 
Calibration Tutorial page. To print the Color Calibration Tutorial page:
a.Select Troubleshooting, and then press the OK button.
b.Select Print Quality Problems, and then press the OK button.
c.Select Calibrate Colors, and then press the OK button.
d.Select Tu t o r i a l  P a g e, and then press the OK button.
e.Follow the instructions on the page.
See also: 
Adjusting Color on page 4-3
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-13
Repeating Defects
Problem
Solution
Print the Repeating Defects page to view instructions for correcting the problem. To print the 
Repeating Defects page:
1.On the control panel, select Troubleshooting, and then press the OK button.
2.Select Print Quality Problems, and then press the OK button.
3.Select Repeating Defects, and then press the OK button. 
The Repeating Defects page prints.
4.Follow the instructions on the page to measure the distance between the defects and 
identify the item causing the defects.
5.Replace the item causing the defects.
Marks or voids recur in only one color. Marks of any color or voids recur uniformly in all 
colors and/or in non-printed areas.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-14
Print Image Is Offset
Problem
Toner appears to have been pulled off the page and placed across the page from where it 
should be.
Solution
■Verify that the paper you are using is the correct type for the printer. See 
Supported Paper and Media on page 3-3.
■Verify that the paper is properly loaded in the tray, and the correct paper type is selected in 
the Paper Tray Setup menu. See Loading Paper on page 3-8.
If the problem persists:
1.On the control panel, select Paper Tray Setup, and then press the OKbutton.
2.Select the tray you are using, and then press the OKbutton.
3.Select Change Setup, and then press the OKbutton.
4.Select Special as the paper type, and then press the OKbutton.
5.Select Continue, and then press the OKbutton.
6.Select a paper type that is lighter than the current tray setting, and then press the 
OKbutton.
Note:Special paper types from lightest to heaviest are: Light Paper, Medium Light Paper, 
Medium Paper, Medium Heavy Paper, Heavy Paper, Thin Card Stock, Thick Card Stock, 
Extra Thick Card Stock.
7.If prompted, select the appropriate paper size, and then press the OKbutton.
8.If the problem persists, perform the Repeating Defects procedure. SeeRepeating Defects 
on page 4-13.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-15
Fusing Is Incomplete or Toner Is Flaking
Problem
Toner appears to be pulled off the print, or is easy to rub off.
Solution
■Verify that the paper you are using is the correct type for the printer. See 
Supported Paper and Media on page 3-3.
■Verify that the paper is properly loaded in the tray, and the correct paper type is selected in 
the Paper Tray Setup menu. See Loading Paper on page 3-8.
If the problem persists:
1.On the control panel, select Paper Tray Setup, and then press the OKbutton.
2.Select the tray you are using, and then press the OKbutton.
3.Select Change Setup, and then press the OKbutton.
4.Select Special as the paper type, and then press the OKbutton.
5.Select Continue, and then press the OKbutton.
6.Select a paper type that is heavier than the current tray setting, and then press the 
OKbutton.
Note:Special paper types from lightest to heaviest are: Light Paper, Medium Light Paper, 
Medium Paper, Medium Heavy Paper, Heavy Paper, Thin Card Stock, Thick Card Stock, 
Extra Thick Card Stock.
7.If prompted, select the appropriate paper size, and then press the OKbutton.
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							Solving Print-Quality Problems
Phaser® 7400 Color Printer
4-16
Color Misregistration
Problem
Color has shifted outside of the expected print area or has been superimposed over another 
color area.
Solution
1.Turn the printer off.
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