Print-Quality Problems Overview - Xerox Phaser 4500 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, as many variables as possible must
be eliminated. The first step is to generate prints using information pages embedded
in the printer on laser paper from the approved media list. The paper should be from
an unopened ream that has been acclimated to room temperature.
See "Xerox Printing Media" on page 9-45 for supported paper and specialty media
that has been tested and approved for use in the Phaser 4500 printer. If the print-
quality defect is still present when printing on approved media from an unopened
ream of paper, then media, software applications, and environmental conditions need
to be researched.
Print a Usage Profile to determine the temperature and humidity under which the
printer has been operating. Compare this to the environmental specifications for the
printer found in "Environmental Specifications" on page 1-11 of this manual.
Temperature and humidity extremes can adversely affect the Xerographic and fusing
characteristics of the printer.
When analyzing a print-quality defect, first determine if the defect is repeating or
random. Continuous defects in the process direction, such as voids and lines, are the
most difficult to diagnose. The visible surfaces of all rollers should be inspected for
obvious defects.
5-2 Phaser 4500 Service Manual