5-2 Phaser 8400 Color PrinterPrint-Quality Problems OverviewPrint-quality defects can be attributed to printer components, consumables, media,internal software, external software applications, and environmental conditions. Tosuccessfully troubleshoot print-quality problems, as many variables as possible mustbe eliminated. The first step is to generate prints using printable pages embedded inthe printer on paper from the approved media list. The paper should be from anunopened ream that has been acclimated to room temperature.See the approved media list from, "Xerox Supplies" on page 9-16 for media that hasbeen tested and approved for use in this printer. If the print-quality defect is stillpresent when printing on approved media from an unopened ream of paper, thenmedia, software applications, and environmental conditions need to be researched.When analyzing a print-quality defect, first determine if the defect occurs:■ in all colors■ in only one color■ if it is repeating or randomThe visible surfaces of all rollers should be inspected for obvious defects.Diagnosing Print-Quality ProblemsThe Troubleshooting Print-Quality Page provides a good overview of the mostcommon print quality problems. To print the Troubleshooting Print-Quality Page,follow these steps:1. From the front panel, scroll to Troubleshooting, then press OK.2. Scroll to Print Quality Problems, then press OK.3. Scroll to Troubleshooting Print Quality Page, then press OK.The Troubleshooting Print Quality Page includes instructions for printing theEliminate Light Stripes test print. These instructions are also provided on the nextpage of this manual. The Eliminate Light Stripes test print indicates individual weakor missing jets or an obstruction in the imaging path that affects a vertical band downthe entire page. Also, you may see color variation from jet to jet on the EliminateLight Stripes test print. Some variation is normal, occasionally occurs, and usuallyself-corrects within a few printed pages. If a print quality problem is not resolved withthe information provided in the Diagnosing Print Quality Problems section, see thespecific problem in "Analyzing Service Test Prints" on page 5-24.
