Print-Quality Troubleshooting Overview; Defects Associated With Specific Components - Xerox phaser 3140 Service Manual

Print-Quality Troubleshooting

Print-Quality Troubleshooting Overview

Defects Associated with Specific Components

5-2
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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 a print using the Printing Demo
page embedded in the printer on laser paper from the approved media list. Refer
to "Media and Tray Specifications" on page 1-16 for supported and specialty
media that have been tested and approved for use in the Phaser 3140/3155/3160.
Use paper from a fresh ream that is acclimated to room temperature and
humidity.
If the print-quality defect is still present when printing on approved media from an
unopened ream of paper, then investigate software applications and
environmental conditions.
Check the temperature and humidity under which the printer is operating.
Compare this to the "Environmental Specifications" on page 1-13. Extreme
temperature and humidity can adversely affect the xerographic and fusing
characteristics of the printer.
When analyzing a print-quality defect, determine if the defect is repeating or
random occurrence. 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 defect. If no defects are found, replace the Print Cartridge, Transfer Roller,
Fuser, and Laser Unit one at a time until the defect is eliminated.
Some print-quality problems are associated with specific assemblies; the most
common problems and the associated assemblies follow.
Laser Unit
• Black Print (page 5-11)
• Vertical White Lines (page 5-19)
• Vertical Lines are Curved (page 5-20)
Fuser
• Ghosting (3) (page 5-17)
• Ghosting (4) (page 5-18)
• Stains on the Back of the Page (page 5-27)
• Incomplete Fusing (page 5-30)
Phaser 3140/3155/3160 Printer Service Manual