Iq1 Iot Image Quality Entry Rap - Xerox Phaser 8860 Service Manual

IQ1 IOT Image Quality Entry RAP

The purpose of this RAP is to establish the source of the imaging defect. After following the Ini-
tial Actions, select the RAP that best describes the observed defect.
Initial Actions
Computer applications, hardware malfunctions, or communication between the IIT and IOT can
cause scan/copy or print-quality issues. Hardware failures that result in image quality problems
can occur in the DADF, Scanner Assembly or Print Engine. Use the following steps to deter-
mine which part of the system is at fault.
1. Ensure the DADF and Scanner connectors are securely connected.
2. Cycle power to the system.
3. Print the 2-sided demo page from the Control Panel. If the image defect appears on the
printed page, the problem is within the Print Engine. When analyzing a print-quality defect
from a Print Engine malfunction, determine if the defect occurs:
• in all colors
• in only one color
• as a repeating or random defect
4. Copy a page directly from the platen.
5. Copy a page from the DADF, selecting 2-sided copy to see if the defect is on the 1st, 2nd
or both sides of the page.
6. If the image defect appears on the 1st side, the problem is within the Scanner Assembly.
7. If the image defect appears on the 2nd side of the page, the problem is the DADF.
NOTE: To aid in troubleshooting image quality issues, print the Paper Tips page. The paper
should be from an unopened ream that has been acclimated to room temperature.
Procedure
After determining the source of the image quality problem, examine the image and select the
relevant corrective procedure from one of the following tables.
Table 1 DADF Image Quality Problems
Symptom
Dark Streaks on the Copied Image
Voids in the Copied Image
Skewed Copy Image
Copied Image is Lighter or Darker than the Original
Fuzzy Text or Image
Copy Image Colors Do Not Match Original
Table 2 Scanner Image Quality Problems
Symptom
Dark Streaks on the Scanned Image
Skewed Scan Image
Scanned Image is Lighter or Darker than the Original
Scan Image Colors Do Not Match Original
Initial Issue
Phaser 8860/8860MFP Service Manual
Symptom
Fuzzy Text or Image
Symptom
Random Light Stripes
Predominate Light Stripes
Smudges or Smears
The printed Image is too Light or Dark
No Image is Printed
Color is Uneven or Wrong
Streaks or Lines Down the Print
Scratches or Marks Parallel to the Long Printing Axis
Ink on the White Portion of the Page
Fuzzy Text
Poor Primary Color Fills
Ghosting
Poor Small Text Resolution
Vertical Lines Appear Wavy
Oil Streaks on Print
Incomplete Image Transfer
Ink Smears on First Printed Side of Duplex Print
Repeating Defects
White Stripes
Wrinkling
Image if Offset or Cutoff
Poor Ink Adhesion, Poor Image Durability
RAP
If a print quality problem is not resolved using the image quality troubleshooting procedures,
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see Analyzing Service Test Prints.
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NOTE: The Troubleshooting Print Quality page includes instructions for printing the Eliminate
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Light Stripes test print. The Eliminate Light Stripes test print indicates individual weak or miss-
IQ6 ing jets or an obstruction in the imaging path that produces a vertical band down the entire
page. You may also see color variations from jet to jet on the Eliminate Light Stripes test print.
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Some variation is normal and usually self corrects within a few printed pages.
RAP
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09/2007
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Table 2 Scanner Image Quality Problems
Table 3 Print Engine Image Quality Problems
RAP
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RAP
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Image Quality
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