02/20002-34 DocuPrint N2025/N2825RAP 32, RAP 33Initial IssueStatus Indicator Repair Analysis ProceduresRAP 32 Registration SensorProcedureOpen the Top Cover and extend the MBF and remove the Print Cartridge. Enter Diagnosticsand select Component Test. Scroll to Sensor Input test and press Enter. Actuate and deactuatethe Registration Sensor. The number on the LCD increments each time you press andrelease the actuator.Y NOpen the MBF Door and visually inspect the Registration Actuator. The actuator movesfreely and is in good condition (not broken or damaged).Y NReplace the Registration Actuator (REP 4.2).Switch the printer power off. Remove the Left Side Cover (REP 1.1) and the Print EngineController PWB Cover (REP 8.5). Disconnect P/J18 from the Print Engine ControllerPWB. Switch the printer power on. On the Print Engine Controller PWB, measure the volt-age between P18 pin 11 and frame ground and between P18 pin 13 and frame ground.There is +3.3VDC between P18 pin 11 and frame ground and 3.3VDC between P18pin 13 and frame ground.Y NReplace the Print Engine Controller PWB (REP 8.5).Switch the printer power off. Reconnect P/J18 to the Print Engine Controller PWB. EnterDiagnostics and select Component Test. Scroll to Sensor Input test and press Enter. Onthe Print Engine Controller PWB, measure the voltage between P/J18 pin 13 and frameground. There is +3.3VDC between P18 pin 13 and frame ground when the Registra-tion Sensor is deactuated and 0.1VDC when actuated.Y NReplace the Registration Sensor (REP 4.6).Replace the Print Engine Controller PWB (REP 8.5).It appears that the Registration Sensor is working correctly. If a problem persists, replace thePrint Engine Controller PWB (REP 8.5).RAP 33 MBF No Paper SensorProcedureOpen the MBF Door and remove all paper from the MBF. Enter Diagnostics and select Compo-nent Test. Scroll to Sensor Input test and press Enter [4]. Actuate and deactuate the MBF NoPaper Sensor Actuator. The number on the LCD increments each time you press andrelease the actuator.Y NVisually inspect the MBF No Paper Sensor Actuator. The actuator moves freely and isin good condition (not broken or damaged).Y NReplace the MBF No Paper Sensor Actuator (REP 2.7).WARNINGP12 pin 10 is a +24VDC supply line, if accidently shorted to pin 9 you will destroythe Print Engine Controller PWB.Switch the printer power off. Remove the Left Side Cover (REP 1.1) and the Print EngineController PWB Cover (REP 8.5). Disconnect P/J12 from the Print Engine ControllerPWB. Switch the printer power on. On the Print Engine Controller PWB, measure the volt-age between P12 pin 7 and frame ground and between P12 pin 9 and frame ground.Both voltages are +3.28VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Switch the printer power off. Reconnect P/J12 to the Print Engine Controller PWB. EnterDiagnostics and select Component Test. Scroll to Sensor Input test and press Enter. Onthe Print Engine Controller PWB, measure the voltage between P/J12 pin 9 and frameground. There is +3.28VDC between P12 pin 9 and frame ground when the MBF NoPaper Sensor is deactuated and 0.0VDC when actuated.Y NSwitch the printer power off. Disconnect P/J121 from the MBF Assembly and P/J12from the Print Engine Controller PWB. Check the continuity between P/J121 and P/J12 as follows.• J121-9 and J12-7• J121-8 and J12-8• J121-7 and J12-9There is continuity between each of the wires.Y NReplace the MBF Combo Harness (PL 4.2).Remove the MBF Assembly and disconnect P/J125 from the MBF No Paper Sensor.Check the continuity between P/J125 and P/J121 as follows.• J125-3 and J121-4• J125-2 and J121-5• J125-1 and J121-6There is continuity between each of the wires.Y NReplace the MBF Combo Harness (PL 4.2).Replace the MBF No Paper Sensor Assembly (REP 2.7).A B
