Xerox WorkCentre 5687 Series, Service Manual, Page: 1012 / 2320

August 2007
3-22
WorkCentre 5687 Family
IQ10
Image Quality RAPs
IQ10 Image Quality Improvement RAP
Use this RAP if the customer is not satisfied with the image quality.
The image quality can be altered by changing the image quality defaults. This will optimize the
image quality to the unique requirements of the customer.
A combination of changes may give the best result. It is recommended to change the image
quality options and then perform ADJ 9.5 Optimize the Dark and Light Grey Image. The alter-
native would be to change the image quality options.
Initial Actions
• Perform IQ3 Xerographics RAP before starting this procedure
• Make a copy of the customer document that shows the defect and keep as a reference.
• Ensure that the customer image quality requirements are understood.
• Perform ADJ 9.2 Image Quality Adjustment Routine. If the image quality routine does not
correct the image quality defect. Enter dC131 and reset location 09-321 and 09-322 to the
default value and continue with the procedure.
Procedure
Make a copy of the customers document with different image quality setups until the image
quality has been improved. Use different combinations of the image quality options that are
available. Set the image quality setting, as the default.
Refer to the image adjustments options that follow.
• Normal. Standard setting for most originals.
• Text. Use for originals containing text or line art.
• Halftone Photo. Use for high quality lithographic images or continues tone photo with
text and / or graphics.
• Photo. Use for continuous tone photographs.
• Lighter / Darken. One to seven levels can be selected by using the slider.
• Background Suppression. Select Off or On (default).
• Sharpness. One to seven levels can be selected by using the slider
• Contrast. One to seven levels can be selected by using the slider
• Screen. This option is preset On with Normal, Text and Halftone Photo Original Type
options. Set to Special or Auto (default)
– Special Enhances continuous tone photographs or high quality frequency halftone
images. Use to create smoother, less grainy output, but risk of blotchy copy quality
defects.
– Auto. Eliminates the risk of blotches or small areas that have different texture or pat-
tern appearance than surrounding area. This may produce a grainier picture than if
Special is used.
1. Go to Tools. In Tools Mode select:
• Feature Defaults.
• Set Copy Defaults.
• Image Adjustments.
• Image Quality.
Save the image quality options to be used as the default setting.
2. Select More Image Quality.
NOTE: If the Text or the Halftone Photo option are selected then the Sharpness and Con-
trast slider are greyed out. The Text option is the same as High Contrast 2. The Halftone
Photo is the same as Low Contrast 1.
Change the sharpness and contrast levels as required.
Save the image quality options to be used as the default setting.
Select End Defaults and Exit Tools.
3. Run different jobs to confirm that the changes made have not caused other image quality
problems.
4. If the image quality still does not meet the requirements of the customer, go to ADJ 9.5
Optimize the Dark and Light Grey Image.
5. Record the new values in the machine log book.
6. Perform NVM Save and Restore to the resident diskette, GP 5.