Xerox 4400DT - Phaser B/W Laser Printer, Service Manual, Page: 139 / 503

3-42 Phaser 4400 Laser Printer Service Manual
The Test Print shown on page 3-43 is used to evaluate and ensure that the printed
image meets the printer specifications. To make test prints:
1. Select
Printable Pages Menu
from the Main menu.
2. Scroll to
Print Test Prints
.
For more information about printing Test Prints, including changing paper source,
destination, print quantity, and duplexing, refer to Test Print on page 4-2.
Note: Insure that Edge-to-edge printing is set to OFF in the PCL
Job Defaults Menu before starting the Test Print. Otherwise,
the image will be shifted left.
Use new paper, whenever possible, to check the image quality of prints. Make five (5)
prints of the Test Print. Discard the first two prints and retain the remaining prints for
image-quality analysis.
VERTICAL STREAKS: Extraneous dark lines/bands in the process direction. page 3-63
HORIZONTAL STREAKS: Extraneous dark lines/bands in the direction of
scan. page 3-65
SPOTS: There are spots of toner on the page. page 3-68
UNFUSED IMAGE: Part of or all of the image is unfused. Refer to the
specification. page 3-69
DAMAGED PRINTS: Creases, wrinkles, excessive curl, cuts, folds or
embossed marks. page 3-71
RESOLUTION: At 600 dpi, the two pixel lines and halftone patches cannot be
reproduced clearly on the print. page 3-72
SPOT DELETIONS: Solid areas are marked with irregular white areas. page 3-73
REPEATING DEFECTS: Recurring marks, spots, lines, or voids. page 3-74
RESIDUAL IMAGES: The image from a previous print, which was not
removed during the cleaning process, has been developed on the current
print. page 3-75
BACKGROUND: Uniform toner contamination in non image areas. Refer to
the Background specification. page 3-76
UNEVEN DENSITY: The text/line darkness and solid area density image
varies across the print. page 3-78
SKEWED IMAGE: Angular displacement of the image from its intended
position on the print. Refer to the specification. page 3-79
REGISTRATION (lead edge to trail edge): Displacement of the image, in the
process direction, from its intended position on the print.
(inboard to outboard): Displacement of the image, in the direction of scan,
from its intended position on the print. page 3-81
SKIPS / SMEARS: Skip-Loss or stretching of the image in bands across the
process direction.
Smear-The distortion of the image in bands across the process direction that
cause it to appear to be blurred or compressed. page 3-83
Image-Quality Defect Definitions (cont'd.)
Defect Definitions Go To: