02/20003-13DocuPrint N2025/N2825 IQ RAP 3, IQ RAP 4Image Quality Repair Analysis ProceduresInitial IssueWARNINGIf the printer has been switched on, the Fuser will be hot.Open the Exit Assembly. Remove the Fuser Assembly. Turn the Fuser Assembly upsidedown. Rotate the fuser idler gear manually and inspect the Heat Roll. Turn the FuserAssembly right side up. Open fuser jam access cover. Rotate the fuser idler gear manu-ally and inspect the Pressure Roll. The Heat Roll and the Pressure Roll are free ofscratches and contamination.Y NReplace the Fuser Assembly (REP 5.1).Replace the following, in order, until the defective component is found: BTR Assembly(REP 7.7), Fuser Assembly (REP 5.1), Paper Transport Assembly (REP 4.1), HVPS PWB(REP 8.2), Laser Assembly (REP 7.1), Print Engine Controller PWB (REP 8.5)Problem solved.IQ RAP 4 Horizontal (Scan) DeletionsA deletion is an area of the print where the image is missing or extremely light. Horizontal dele-tions extend across the long dimension of the page (Figure 1).Figure 1 Horizontal DeletionsInitial Actions• Check that the paper supply is dry and fresh.• 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.• Check that rollers and other components in the paper path are clean and unobstructed.ProcedureEnter Diagnostics and select Test Print. Scroll to Print Pattern and press Enter [4]. Run five testprints. The test prints have horizontal deletions.Y NExit diagnostics and enter the Menu Mode. Print a Config Sheet. The problem is stillpresent.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).Load fresh, dry paper. Run a test print. The problem is still present.Y NProblem solved.Install a new Print Cartridge. The problem is still present.Y NProblem solved.A BA
