02/20002-26 DocuPrint N2125RAP 22 , RAP 23Initial IssueStatus Indicator Repair Analysis ProceduresRAP 22 Paper Size ErrorThere is a conflict between the size of paper the printer senses and the size of paper that isactually loaded.ProcedureThe problem appears when using Tray 1, 2, or 3.Y NVerify the size of paper currently in the MBF Tray. Enter the User Menus, select TrayMenu, then select MBF Size. The paper size displayed on the LCD matches the sizeactually in the MBF.Y NSet MBF size to the size of paper actually installed, then press Enter.Replace the Print Engine Controller PWB (REP 9.3).The paper size in the problem tray is within printer specifications.Y NReplace with paper that meets specifications.Check the side guides and the Paper Stack End Guide in the problem tray. All guides areproperly set for the size of paper installed.Y NProperly set the guides.Check the size cam on the left side of the paper tray (Table 1). The cams are in good condi-tion (not broken) and move freely as the paper tray end guide is moved.Y NReplace the paper tray (PL 2.1/PL 11.1).Reinstall the paper tray. Enter Diagnostics and select Component Test. Scroll to Paper TraySize Reading and press Enter to display MBF size. Press Enter repeatedly to scroll througheach of the paper trays. The paper size displayed on the LCD matches the size of thepaper actually loaded.Y NReplace the Tray Size PWB (REP 3.13/REP 11.19).Replace the Print Engine Controller PWB (REP 9.3).RAP 23 Low Toner Sensor FailureLow Toner is not displayed when the Print Cartridge appears to be empty.ProcedureRun a Test Print. Inspect the print quality. The print is light.Y NReturn to Initial Actions.Replace the Print Cartridge (PL 8.1). Run 5 test prints (Config Sheet or Demo Page) andinspect the print quality. The print quality meets specifications.Y NGo to IQ RAP 1.Open the Front Cover and cheat the Front Cover Interlock. Enter Diagnostics and select Com-ponent Test. Scroll to Sensor Input and press Enter [4]. Hold the Print Cartridge in positionwhile you carefully push down then release the Toner Sensor. The number on the LCD incre-ments each time you pull down and release the Toner Sensor.Y NSwitch the printer power off. Remove the Front Cover (REP 1.6) and the Left Front Cover(REP 1.7). Cheat the Front Cover Interlock Switch. Switch the printer power on. On theconnector PWB, check the voltage between P/J42 pin 4 and frame ground. The voltageis 0.0VDC with the print cartridge installed and 3.3VDC with the print cartridgeremoved.Y NCheck the voltage between P/J42 pin 3 and pin 1. The voltage is 24VDC.Y NOn the Connector PWB, check the voltage between P/J231 pin 11 and pin 12.The voltage is 24VDC.Y NCheck the Connector Harness Assembly. If OK, replace the Print EngineController PWB (REP 9.3).Replace the Connector PWB (REP 9.7).Replace the Toner Sensor (REP 5.2).On the connector PWB, check the voltage between P/J231 pin 9 and frame ground. Thevoltage is 0.0VDC with the print cartridge installed and 3.3VDC with the print car-tridge removed.Y NReplace the Connector PWB (REP 9.7).Check the Connector Harness Assembly. If OK, replace the Print Engine Controller PWB(REP 9.3).Replace the Print Engine Controller PWB (REP 9.3).Table 1 Paper Size ActuatorsActuator CamExtendedB5SEFA5SEF13"SEF14"SEF8.5"SEFA4SEFTop X XMiddle X X XBottom X X XForward Cam X
