02/20003-18 DocuPrint N2125IQ RAP 7 , IQ RAP 8Initial IssueImage Quality Repair Analysis ProceduresY NRemove any obstructions from the laser beam path.Inspect the BTR Assembly for contamination and wear. The BTR is free of contamina-tion and wear.Y NReplace the BTR Assembly (REP 7.1).WARNINGIf the printer has been switched on, the Fuser will be hot.Open the Rear Cover. Remove the Fuser Assembly. Rotate the fuser idler gear manuallyand inspect the Heat Roll. Open the fuser jam access cover. Rotate the fuser idler gearmanually and inspect the Pressure Roll. The Heat Roll and the Pressure Roll are freeof scratches and contamination.Y NReplace the Fuser Assembly (REP 6.2).Go to RAP 44Problem solved.IQ RAP 8 Horizontal StreaksThere are black lines running horizontally across the page (at a right angle to the direction ofpaper travel) (Figure 1).Figure 1 Horizontal StreaksInitial 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.ProcedureEnter Diagnostics and select Test Print. Scroll to Print Pattern and press Enter [4]. Run five testprints. The test prints have horizontal streaks.Y NExit diagnostics and enter the Menu Mode. Print a Config Sheet. The prints have hori-zontal streaks.Y NThe problem appears to be with the host computer or the cables. If the problems per-sist, replace the System Controller PWB (REP 9.2).Remove and reseat the System Controller PWB. If the problems persist, replace the Sys-tem Controller PWB (REP 9.2).Install a new Print Cartridge. Run a test print. The horizontal streaks are gone.Y NRemove the Print Cartridge. Inspect the Metal Grounding Contacts on the Print CartridgeSide Guide. The Metal Grounding Contacts are intact and is free of contamination.Y NReform or clean the Metal Grounding Contacts, so it makes better contact with thedrum shaft, or replace the Print Cartridge Side Guide (REP 7.5).AA B
