86 Phaser 5400 Laser Printer Service GuideRAP 22 Error Code: E9-1 Duplex Unit Failor Removed.Table 42 Duplex Unit Fail or Removed MessageTroubleshooting ProcedureStep Actions and Questions Yes No1 PROCEDURE1. Switch printer power OFF.2. Remove the Left Side Cover [RRP 1.1, page 250] andthe Print Engine Controller Board Cover [RRP 8-5,page 310].3. Disconnect P/J19 from the Print Engine ControllerBoard.4. Switch printer power ON.5. Measure the voltage between P19-4 on the PrintEngine Controller Board and frame ground.Does the voltage measure +3.3 VDC?Go toStep 2.Replace thePrint EngineControllerBoard[RRP 8.5,page 310].2 ìYESî FROM STEP 1 ABOVE1. Switch printer power OFF.2. Reconnect P/J19 to the Print Engine Controller Board.3. Remove the HCS, if installed.4. Switch printer power ON.5. Measure the voltage between P19-4 on the PrintEngine Controller Board and frame ground.Does the voltage measure +1.6 VDC?Replace thePrint EngineControllerBoard[RRP 8.5,page 310].Go toStep 3.3 ìNOî FROM STEP 2 ABOVE1. Switch printer power OFF.2. Open the Rear Cover and remove the DuplexAssembly [RRP 9.1, page 404].3. Remove the HVPS Cover [RRP 8.2, page 307].4. Disconnect P/J501 from the Duplex Interface Boardand P/J19 from the Print Engine Controller Board.5. Check for continuity between the following pins: 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 P19-1Is there continuity between all pins measured?Replace theDuplexAssembly[PL 13.1,page 426]. Ifproblempersists,replace theDuplexInterfaceBoard[RRP 8.3,page 308].Replace theDuplexInterfaceBoardHarness[PL 9.1,page 404].
