02/20002-55DocuPrint N2025/N2825 RAP 57Status Indicator Repair Analysis ProceduresInitial IssueRAP 57 E7: Duplex JamThere is a paper jam between the Exit Assembly and the Duplex Sensor.ProcedureOpen the printer and check for paper or other obstructions in the paper path. The printer iffree of jammed paper, paper scraps, or other obstructions.Y NClear all jammed paper, paper scraps, and obstructions from the printer.Run 15 to 20 duplex test prints. The error code reappears.Y NProblem Solved.Open the Rear Cover and cheat the Rear Cover Interlock. Enter Diagnostics and select Com-ponent Test. Scroll to Dup Motor On Low and press Enter. The Duplex Motor and rollersturn smoothly at low speed.Y NReplace Duplex components as necessary (PL 13.1).Scroll to Dup Motor On Hi and press Enter. The Duplex Motor and rollers turn smoothly athigh speed.Y NReplace Duplex components as necessary (PL 13.1).Enter Diagnostics and select Component Test. Scroll to Sensor Input test and press Enter.Open the Rear Cover. Actuate and deactuate the Duplex Sensor Actuator. The number onthe LCD increments each time you press and release the actuator.Y NSwitch the printer power off. Remove the printer Left Side Cover (REP 1.1) and the PrintEngine Controller PWB Cover (REP 8.5). Disconnect P/J19 from the Print Engine Control-ler PWB. Switch the printer power on. Check the voltage between P/J19 pin 5 and frameground. The voltage is 3.3VDC.Y NReplace the Print Engine Controller PWB (REP 8.5).Switch the printer power off. Reconnect P/J19 to the Print Engine Controller PWB. Switchthe printer power on. Check the voltage between P/J19 pin 5 and frame ground as youactuate and deactuate the Duplex Sensor Actuator. The voltage is 3.3VDC when thesensor is deactuated and 0.0VDC when the sensor is actuated.Y NSwitch the printer power off. Disconnect P/J19 from the Print Engine Controller PWBand P/J501 from the Duplex Interface PWB. Check the continuity between the pinsas follows:• P501-1 and P19-13• P501-2 and P19-12• P501-3 and P19-11• P501-4 and P19-10• P501-5 and P19-9• P501-6 and P19-8• P501-7 and P19-7• P501-8 and P19-6• P501-9 and P19-5• P501-10 and P19-4• P501-11 and P19-3• P501-12 and P19-2• P501-13 and P19-1There is continuity between all pins measured.Y NRepair or replace the Duplex Interface Harness (PL 9.1).Replace the Duplex PWB (REP 9.7). If the problem still exists, replace the DuplexInterface PWB (REP 8.3).Replace the Print Engine Controller PWB (REP 8.5).Remove the Duplex Assembly. Check the Duplex Assembly rollers for contamination and wear.The rollers are clean and in good condition.Y NClean or replace the rollers as necessary (PL 13.1).Replace the Duplex Assembly. Run duplex test prints. The error Code reappears.Y NProblem solved.Replace the Print Engine Controller PWB (REP 8.5).AABB
