02/20002-47DocuPrint N2125 RAP 55, RAP 56Status Indicator Repair Analysis ProceduresInitial IssueRAP 55 Duplex Unit Fail or Removed (E9-1)Duplex Unit was removed while power was on.ProcedureSwitch the printer power off. Remove and reinstall the Duplex Unit. Switch the printer power on.Run a Config Sheet. The Duplex Unit is listed on the Config Sheet.Y NSwitch the printer power off. Remove the Left Interface Cover (REP 1.1), Left Cover (REP1.2), and the Left Plate Assembly (REP 1.11). Switch the printer power on. On the PrintEngine Controller PWB, check the voltage between P/J34 pin 9 and frame ground. Thevoltage is 3.3VDC with the duplex Unit removed and 0.0VDC with the Duplex Unitinstalled.Y NCheck the wiring harnesses. If in good condition, replace the Duplex PWB (REP12.4). If the problem persists, replace the Print Engine Controller PWB (REP 9.3).Replace the Print Engine Controller PWB (REP 9.3).Problem Solved.RAP 56 Paper Jam Open Front Cover (E7)Paper is early to the Registration Sensor, paper is late to or late off the Registration Sensor, orthe Registration Sensor is actuated at power on.ProcedureOpen the printer and check for paper or other obstructions in the paper path. Remove theDuplex Assembly and check the rear entrance chute to the Paper Handler. The printer is freeof jammed paper, paper scraps, or other obstructions.Y NClear all jammed paper, paper scraps, and obstructions from the printer.Check the Duplex Belt, Rollers, and gears. Check for contamination, wear, and obstructions.The Duplex rollers, gears, and belt are clean and in good condition.Y NReplace components or Duplex Assembly as necessary (REP 12.1).Reinstall the Duplex Assembly. Enter diagnostics and select Test Print. Run 15 to 20 duplextest prints. The error code reappears.Y NProblem solved.Select Component Test. Scroll to Duplex Motor Low and press Enter. Then scroll to DuplexMotor Hi and press Enter. You can hear the Duplex Motor run at both speeds.Y NRemove the Duplex Assembly then remove the Duplex Cover (REP 12.3). Disconnect P/J38 from the Duplex PWB. Measure the resistance on the disconnected plug between pin1 and pin 2; between pin 1 and pin 3; between pin 1 and pin 4; and between pin 1 and pin5. All four readings are between 30 and 37 ohms.Y NReplace the Duplex Motor Assembly (REP 12.8).Replace the Duplex PWB (REP 12.4). If the problem persists, replace the Print EngineController PWB (REP 9.3).Press [0] for one second to stop all tests. Scroll to Sensor Input test and press Enter. Use asmall strip of paper to actuate and deactuate the Duplex Transport Sensor. The number onthe LCD increments each time you press and release the actuator.Y NReplace the Duplex Sensor Assembly (REP 12.13). If the problem persists, replace thePrint Engine Controller PWB (REP 9.3).Perform RAP 32 to test the Registration Sensor. The Registration Sensor is working cor-rectly.Y NReplace the Registration Sensor (REP 5.4).Replace the Print Engine Controller PWB (REP 9.3).manuals4you.commanuals4you.com
