Error Messages and Codes 33Jam at Duplex Jam DThe printerís front panel displays ìJam at Duplexî and any obstruction, media anddebris has been removed from the duplex paper path, printer power has been cycledand the error still appears.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map ReferencesDuplex Sensor, PL 6.1.4 "Drive Section" on page 355Actuator Kit, PL 15.1Gear Kit, PL 7.1.99 "Paper Feed" on page 362Chute Assembly Exit, PL 7.1.7 "Map 1" on page 345Troubleshooting Procedure TableSteps Actions and Questions Yes No1 Check the following for evidence of faultor damage:Chute Assembly Exit, PL 7.1.7Duplex Motor Assembly, PL 7.1.8Duplex Sensor, PL 6.1.4Duplex Actuator, PL 6.1.5Chute Assembly Out, PL 6.1.1Replace thedamaged part.Go to step [2].2 Use service diagnostics to test the DuplexSensor.Does the sensor function correctly?Go to step [7]. Replace thesensor andGo to step [3].3 Does the printer function correctly afterthe Duplex Sensor is replaced?Complete Go to step [4].4 Block the Duplex Sensor and verify thevoltage between J 139-3<=>J 139-2 is0 VDC.Go to step [6]. Go to step [5].5 Check the Front 2 Harness for continuity.See "Paper Feed" on page 362.Go to step [6]. Replace theFront 2 HarnessAssembly, PL6.1.2.6 Check P 139<=>J 13 on the Front 1AHarness for continuity.See "Paper Feed" on page 362.Replace theEngine ControlBoard, RRP 12.7.Replace theAssembly, Front1A, PL 13.1.7.7 If possible, print 1 sheet of paper inDuplex Mode and check to see if thesheet has reversed in the printer.Replace the ChuteAssembly Exit,RRP 7.1.Go to step [8].8 Use service diagnostics to test the DuplexMotor.Actuate the Interlock Switch during thetest.Replace the ChuteAssembly Exit,RRP 7.1.Go to step [9].
