Print-Quality Troubleshooting 5-7Print-Quality TroubleshootingThe following table provides examples or descriptions of various image or printingdefects that may be observed in the Phaser 3450 Laser Printer. The table also listspossible causes and solutions.Image Defect Possible Cause SolutionNo Image/Blank PrintsPrints have no visibleimage■ Seal tape was notremoved from thecartridge.■ Low or no toner■ Defective ground tothe Print Cartridge.■ Main Board■ Incorrect high-voltageoutput from the PowerSupply Board.■ Ensure that sealing tape hasbeen removed.■ Verify Print Cartridge ground.■ Verify continuity between thecartridge ground and frame.■ Replace in the following order:■ Print Cartridge■ Main Board■ Power Supply Board■ Laser AssemblyLight Prints: All areasof the print are light■ Media (paper)■ Verify Remote ControlPanel settings.■ Seal tape was notremoved from thecartridge.■ Low toner■ Transfer Roller■ Laser contamination orobstruction.■ Incorrect high-voltageoutput.■ Low ambienttemperature(<10º C).■ Verify paper meets printerspecifications. Print 20 to 30pages using the recommendedpaper.■ Verify that the Remote ControlPanel is not set to Economode orthat Toner Density menu is notset to “light.”■ Ensure that the sealing tape hasbeen removed.■ Verify low toner warning is notdisplayed on front panel. Removethe Print Cartridge and shake,reinstall or replace.■ Inspect the Transfer Roller forcontamination and verify high-voltage contacts. Replace asrequired.■ Inspect the Laser assembly forany obstructions; clean laser.■ Replace the Power Supply Board.Black Prints: The printsare completely black,has no visible image.■ No charge voltage.Power Supply Board■ Print Cartridge■ Main board■ Laser is always on.■ Verify the high-voltage contactsare operational and make goodcontact with the print cartridge.■ Replace in the following order:■ Print Cartridge■ Power Supply Board■ Main Board■ Laser Assembly
