02/20002-25DocuPrint N2125 RAP 20 , RAP 21Status Indicator Repair Analysis ProceduresInitial IssueRAP 20 Fan Failure Power Off Now (U5)The printer is detecting incorrect fan rotation.ProcedureSwitch the printer power off, then on. The Fan rotates when the main power is switched on.Y NSwitch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP1.2), and Left Plate Assembly (REP 1.11). Switch the printer power on. On the LVPS,check the voltage between P/J283 pin 1 and frame ground. The voltage is +19VDC.Y NCheck the voltage between P/J281 pin 13 and frame ground. The voltage is+0.8VDC.Y NReplace the Print Engine Controller PWB (REP 9.3).Replace the LVPS (REP 9.5).Replace the Fan Assembly (REP 9.1).Enter Diagnostics and select Component Test. Scroll to Fan Motor Hi and press Enter. TheFan rotates at high speed.Y NSwitch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP1.2), and Left Plate Assembly (REP 1.11). Switch the printer power on. Scroll to FanMotor Hi and press Enter. On the LVPS, check the voltage between P/J283 pin 1 andframe ground. The voltage is +21.5VDC.Y NPress the Online [0] key. Check the voltage between P/J281 pin 11 and frameground. Press the Enter key. The voltage changes from 0.8VDC to 0.0VDC whenyou press the Enter key.Y NReplace the Print Engine Controller PWB (REP 9.3).Replace the LVPS (REP 9.5).Replace the Fan Assembly (REP 9.1).Switch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP 1.2),and Left Plate Assembly (REP 1.11). Enter Diagnostics and select Component Test. On theLVPS, check the voltage between P/J283 pin 2 and frame ground. The voltage is less than1.0VDC.Y NReplace the Fan Assembly (REP 9.1).Replace the Print Engine Controller PWB (REP 9.3).RAP 21 Low Paper Tray #Paper stack in the Paper Tray Assembly is below 50 ±30 sheets.ProcedureInsert a full Tray Assembly in the affected position. The Error Message reappears.Y NProblem solved.Remove the affected tray Assembly. Push up the Low Paper Actuator manually and thenrelease. The Low Paper Actuator moves smoothly.Y NRepair or replace the Low Paper Sensor Assembly (REP 3.5/REP 11.14).Enter Diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.Press the Low Paper Actuator manually and then release. The LCD increments the countereach time you press and release the Actuator.Y NCheck the wiring associated with the specific Low Paper Sensor. If ok, replace the LowPaper Sensor (REP 3.5/REP 11.14).Replace the Print Engine Controller PWB (REP 9.3).
