Print-Quality Problems Overview - Xerox Phaser 6300 Service Manual

Print-Quality Problems Overview

Print-quality defects can be attributed to printer components, consumables, media,
internal software, external software applications, and environmental conditions. To
successfully troubleshoot print-quality problems, eliminate as many variables as
possible. The first step is to generate prints using printable pages embedded in the
printer on laser paper from the supported media list. Use paper from an fresh ream
that is acclimated to room temperature and humidity.
See "Media and Tray Specifications" on page 1-17 or the Paper Tips page for media
that has been tested and approved for use in Phaser 6300/6350 printers. If the
print-quality defect is still present when printing on approved media from an
unopened ream, then investigate software applications and environmental conditions.
Print the Status or Configuration page to determine the temperature and humidity
under which the printer is operating. Compare this to the "Environmental
Specifications" on page 1-16. Temperature and humidity extremes can adversely
effect the xerographic and fusing characteristics of the printer.
Phaser 6300/6350 printers use separate Developer Assemblies to develop a latent
image for each color on the Imaging Unit where the colors are combined to form the
final image. In most cases, print-quality defects are the result of one particular
component in the print engine, See the Repeating Defects chart under "Defects
Associated with Specific Printer Components" on page 5-3 or print the Repeating
Defects page from the Control Panel. When a single component of the Imaging Unit
is causing a print-quality defect, replace the Imaging Unit.
When analyzing a print-quality defect, first determine if the defect occurs in all colors
or only one color and if it is repeating or random. Continuous defects in the process
direction, such as voids and lines, are the most difficult to diagnose. Inspect the
visible surfaces of all rollers for obvious defects. If no defects are observed, replace
the Imaging Unit, Developer Assembly, Transfer Roller, and Fuser one at a time until
the defect is eliminated.
5-2 Phaser 6300/6350 Color Laser Printer Service Manual