02/20003-20 DocuPrint N2025/N2825IQ RAP 11Initial IssueImage Quality Repair Analysis ProceduresIQ RAP 11 BackgroundThere is toner contamination on all or part of the page. The contamination appears as a verylight gray dusting (Figure 1).Figure 1 BackgroundInitial Actions• Inspect the printer paper path for items such as staples, paper clips and paper scraps.• Check installation of the Print Cartridge.• Check that the Print Cartridge ground contact points are clean.• Ensure the machine covers are in place and fit well so no outside light can enter themachine.ProcedureInstall a new Print Cartridge (PL 8.1). Run a Test Print. The background is gone.Y NGenerate a Test Print and switch OFF the printer power halfway through the print cycle.Carefully remove the Print Cartridge and inspect the toner image on the drum just beforethe transfer area (BTR). The undeveloped areas of the drum are clean and withoutbackground.Y NGo to RAP 43.Remove the Print Cartridge. Check for the continuity, from the front opening, betweenmetal parts of the Paper Transport Assembly and the Printer Frame. The Paper Trans-port Assembly Baffle is grounded.Y NRemove and clean the contact areas of the Paper Transport Assembly (REP 4.1).Reinstall the assembly so that it is grounded properly. If the problem persists,replace the Paper Transport Assembly (REP 4.1).Clean or replace the Fuser Assembly (REP 5.1). The background is gone.Y NReplace the following, in order, until the defective component is found: HVPS PWB(REP 8.2), Fuser Assembly (REP 5.1), Paper Transport Assembly (REP 4.1), LaserAssembly (REP 7.1), Right Print Cartridge Guide (REP 7.2), Print Engine ControllerPWB (REP 8.5).Problem solved.Problem solved.AA
