Error Messages and Codes 3-21Jam at Duplex: Jam D■ Check for any obstructions or debris in the duplexer or paper path.■ Cycle printer power■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack Map ReferencesDuplex Sensor, PL 6.1.4 “Drive Section” on page 10-18Actuator Kit, PL 15.1 “Paper Feed” on page 10-25Chute Assembly Exit, PL 7.1.7 “Map 1” on page 10-6Troubleshooting 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 10-25.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 10-25.Replace theEngine ControlBoard,page 8-107.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,page 8-62.Go to Step 8.
