Xerox Phaser 7760 Service Manual

January 2010
3-7
Phaser 7760 Color Laser Printer
Engine Test Prints
Image Quality
Revised
Print Laser Check
NOTE: Must have 8 x 11 LEF media in Tray 1 (MPT) when performing this procedure.
Since all of the Laser Diodes are energized, all colors will be printed resulting in a composite
grey image. If the image is not composite grey, one or more of the diodes may be bad. If there
are gaps in the printout or the color is not uniform, the unit may required cleaning, adjustment,
or repair.
Figure 1 Print Laser Check
Print Halftones
NOTE: Must have 8 x 11 LEF media in Tray 1 (MPT) when performing this procedure.
Selecting Print Halftones (Service Diagnostics Menu > Built-in Test Prints > Print Half-
tones) causes a group of six pages to print that consist of 80% solid fill on individual pages of
CMYK for primary colors and RG for secondary. Colors should be uniform from top to bottom of
the page with no mottling and the density for each color should be approximately equal.
Figure 2 Print Halftones

Xerox Phaser 7760 Specifications

General

Brand	Xerox
Model	Phaser 7760
Category	Printer
Language	English