5-2 Phaser 6180MFP Multifunction 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 1-34 forsupported and specialty media that have been tested and approved for use inthe Phaser 6180MFP. 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.Print the Configuration page to determine the temperature and humidity underwhich the printer is operating. Compare this to the “EnvironmentSpecifications” on page 1-22. Extreme temperature and humidity canadversely affect the xerographic and fusing characteristics of the printer.When analyzing a print-quality defect, first determine if the defect occurs in allcolors or only one color and if it is repeating or random occurrence.Continuous defects in the process direction, such as Voids and Lines, are themost difficult to diagnose. Inspect the visible surfaces of all Rollers for obviousdefect. If no defects are found, replace the Print Cartridge, Laser Unit,Transfer Unit, and Fuser one at a time until the defect is 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■ Light or Undertone Print (page 5-26)■ Blank Print (No Print) (page 5-28)■ Black Print (page 5-31)■ Vertical Blank Lines (page 5-34)■ Horizontal Band, Voids, or Streaks (page 5-36)■ Vertical Stripes (page 5-38)■ Horizontal Stripes (page 5-40)■ Faded or Missing Image (page 5-42)■ Random Spots (page 5-44)■ Repeating Bands, Lines, Marks, or Spots (page 5-48)
