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Xerox Phaser 7400DX User Manual

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Page 91

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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Page 92

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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Page 93

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,...

Page 94

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...

Page 95

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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Page 96

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...

Page 97

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...

Page 98

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...

Page 99

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,...

Page 100

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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