02/20003-11DocuPrint N2025/N2825 IQ RAP 1, IQ RAP 2Image Quality Repair Analysis ProceduresInitial IssueThe BTR is intact and is free of contamination.Y NReplace the BTR (REP 7.7).Generate a Test Print and switch OFF the printer power halfway through the printcycle. Carefully remove the Print Cartridge and inspect the toner image on the drumjust before the transfer area (BTR). The image on the drum is completely devel-oped with sharp, black, easily read areas.Y NGo to RAP 43.Inspect the toner image on the drum immediately after the transfer area (BTR). Thetoner image on the drum is transferred completely to the paper.Y NGo to RAP 43.Replace in order until the problem is solved: BTR Assembly (REP 7.7), FuserAssembly (REP 5.1), HVPS PWB (REP 8.2), Laser Assembly (REP 7.1), LVPSAssembly (REP 8.6), Right Print Cartridge Guide (REP 7.2), Print Engine ControllerPWB (REP 8.5), Paper Transport Assembly (REP 4.1).Problem Solved.Problem Solved.IQ RAP 2 Blank PrintsNo visible image anywhere on the output print (Figure 1).Figure 1 Blank PrintsInitial 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 there are no obstructions in the Laser path.• Ensure the blank prints are not the result of multisheet feeds.ProcedureEnter Diagnostics and select Test Print. Scroll to Print Pattern and press Enter [4]. Run five testprints. The test prints are blank.Y NExit diagnostics and enter the Menu Mode. Print a Config Sheet. The prints are blank.Y NThe problem appears to be with the host computer or the cables. If the problems per-sist, replace the System Controller PWB (REP 8.1).Remove and reseat the System Controller PWB. If the problems persist, replace the Sys-tem Controller PWB (REP 8.1).Install a new Print Cartridge. Run a test print. There is a normal image on the paper.Y NRemove the Print Cartridge. Inspect the Metal Grounding Contact on the rear end of theRight Print Cartridge Guide. The Metal Grounding Contact is intact and is free of con-tamination.Y NReform or clean the Metal Grounding Contact, so it makes better contact with thedrum shaft, or replace the Right Print Cartridge Guide (REP 7.2).A B CA B
