5-10 Phaser 6250 Color Laser Printer Service ManualPrint-Quality TroubleshootingLight PrintsInitial Actions:■ Verify the printer is not in Draft mode.■ Verify the media used is supported by thisprinter. "Media and Tray Specifications" onpage 1-14. lists correct media types, sizes,and weights for each tray.■ Verify the media settings are correct at thefront panel.■ Run the color calibration routine prior tousing this troubleshooting procedure.Troubleshooting ProcedureStep Check Yes No1 Check the Imaging Unit, FuserAssembly and Transfer Roller forcorrect installation, damage orcontamination, and life remaining.Replace or reinstallthe affectedcomponent.Go to Step 2.2 Does the image quality improve if theImaging Unit is replaced?Complete. Go to Step 3.3 Does the image quality improve if theTransfer Roller is replaced?Complete Go to Step 4.4 Check the Front 1A Harness forcontinuity.P/J5030 <=> Transfer roller.P/J5020 <=> Transfer rollerGo to Step 5. Replace the defectiveharness.5 Does the image quality improve if theLaser Unit is replaced?Complete Go to Step 6.6 Does the image quality improve if theSUB-HVPS is replaced?Complete Go to Step 7.7 Check the FRONT 1A Harness forcontinuity.Go to Step 8. Replace the Front 1A ,Harness AssemblyPL 13.1.7.8 Does the image quality improve if theFuser is replaced, PL 8.1.1Complete Replace the EngineControl Board,page 8-107.
