5-2 Phaser 3250 Laser Printer Service ManualPrint-Quality TroubleshootingPrint-Quality Problems OverviewPrint-quality defects can be attributed to printer components, consumables,media, internal software, external software applications, and environmentalconditions. To successfully troubleshoot print-quality problems, eliminate asmany variables as possible. The first step is to generate prints usinginformation pages embedded in the printer on laser paper from the approvedmedia list. Refer to “Media and Tray Specifications” on page 1-18 forsupported and specialty media that have been tested and approved for use inthe Phaser 3250. Use paper from a fresh ream that is acclimated to roomtemperature and humidity.If the print-quality defect is still present when printing on approved media froman unopened ream of paper, then investigate software applications andenvironmental conditions.Check the temperature and humidity under which the printer is operating.Compare this to the “Environmental Specifications” on page 1-12. Extremetemperature and humidity can adversely affect the xerographic and fusingcharacteristics of the printer.When analyzing a print-quality defect, determine if the defect is repeating orrandom occurrence. Continuous defects in the process direction, such asVoids and Lines, are the most difficult to diagnose. Inspect the visible surfacesof all Rollers for obvious defect. If no defects are found, replace the PrintCartridge, Transfer Roller, Fuser, and Laser Unit one at a time until the defectis eliminated.Defects Associated with Specific Printer ComponentsSome print-quality problems can be associated with specific assemblies; themost common problems and the associated assemblies are listed in thissection. Refer to the specific print-quality troubleshooting procedure for detailinformation.Laser Unit■ Black Print (page 5-16)■ Vertical White Line (page 5-25)Transfer Roller■ Uneven Density (page 5-18)■ Background Contamination (page 5-19)■ Ghosting (1) (page 5-21)■ Vertical White Line (page 5-25)■ Vertical Black Line and Band (page 5-27)■ Stains on the Front of the Page (page 5-31)■ Stains on the Back of the Page (page 5-32)
