Iq1 Iot Image Quality Entry Rap - Xerox WorkCentre 7132 Service Documentation

IQ1 IOT Image Quality Entry RAP

The purpose of this RAP is to serve as the entrance vehicle into the Image Quality RAPs sec-
tion. All Image Quality RAPs must be accessed through this RAP.
The RAP will have you evaluate the copies made during the Call Flow procedure for image
quality defects. It will refer you to the Image Quality Analysis RAPs, the Image Quality Defect
section in order to diagnose and repair any image quality problems.
Initial Actions
Check for the presence of the defect in Copy mode and in Print mode. If the problem occurs in
Copy mode only, go to the IQ2 RAP.
Defect - green indicates hotlink to
image samples
Background Undesirable toner deposits on the copy or print. The toner deposits can be localized or may cover the entire copy or print.
Depending on the density of the background, it is referred to as low, medium, high, or very high background. It may occur
in all colors, single colors, or any combination of single colors.
Color Misregistration Multi-colored images that should be superimposed are offset. This offset may be in the process direction or perpendicular
to process direction.
Deletions The undesirable absence of toner from the copy or print. May show as white, light, or untrue colored areas. The most
common causes are "tenting" of paper from mishandling or moisture, or defects in the Transfer Belt.
• Debris-Centered Deletions
•
• Streak Deletion in Process
•
Direction
Fuser Offset Areas of poorly-fused toner are lifted from one area of a print and deposited on a different area, or onto a subsequent
print.
High Frequency Bands Repeating interval bands that are most noticeable in low density (20-30%) halftone areas of the copy. These bands run
perpendicular to process direction.
Irregular Process Direction Streak Streaks: Usually medium-width streaks of (or shifts in) color most noticeable in low density 20-30%) halftone areas of the
copy.
A deletion in the form of a single streak that runs from the lead edge to the trail edge of the copy.
Lead Edge Toner Smear (fused) Smears of fused toner on the lead edge of prints
Lead Edge Toner Smear (unfused) Smears of unfused toner on the lead edge of prints
Low Image Density A condition that results when too little toner of a single color or combination of colors is developed on the copy or print.
This results in lighter copies or prints for the single-color toner or the color that results from the combination of color ton-
ers.
Misregistration/Skew The position and/or alignment of the image relative to the top edge and side edge of the paper is not within specification. Go to the IQ9 RAP
Reversion 4.0
WorkCentre 7132
Table 1 Image Quality Defects
Debris-Centered: Deletions in the areas surrounding toner agglomerates.
Process Direction Streak: A deletion in the form of a single streak that runs from the lead edge to the trail edge of the
copy.
NOTE: MAX setup (ADJ 9.1.2), (refer to User Guide) is a color calibration for the copier and
printer. A Calibration Adjustment compensates for differences between the actual and the
expected (target) toner densities for each color. A Calibration Adjustment should be performed
whenever there is a noticeable change in the appearance (quality) of the output, particularly
changes in color tones or densities. Performing a Calibration Adjustment on a regular basis will
help to maintain consistent color quality over time. Since a Calibration Adjustment can affect all
jobs for all users, it is recommended that this procedure be performed only by the
Machine Administrator.
Perform the Calibration Adjustment if any of the following problems are reported:
• Incorrect colors
• Poor gray balance
• Colors have shifted over time
• Color densities too high or low
Continue with the procedure if the problem remains.
Procedure
Go to Table 1. Examine the prints for any of the listed defects. Perform the corrective action
that is listed.
Description
January 2007
3-3
Corrective Action
Go to the IQ6 RAP
Go to the IQ8 RAP
Go to the IQ7 RAP
(for process direction streak
deletion, go to the IQ12 RAP
Go to the IQ13 RAP
Go to the IQ14 RAP
Go to the IQ12 RAP
Go to the IQ12 RAP
Go to the IQ13 RAP
Go to the IQ3 RAP
Image Quality
IQ1