3-20 Phaser 7400 Color Printer Options Service ManualJam at Finisher Punch UnitMedia did not clear the Finisher Entrance Sensor on time. This error represents a jamat the Finisher entrance.Applicable Status Code:Code FN1: Jam at Finisher PunchInitial Actions:■ Check for obstructions or debris in the paper path.■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Punch Unit■ Finisher Entrance Sensor■ Finisher Transport Rollers■ Options Map 2, Punch Unit Controller Board■ Options Map 8, Finisher Sensor Locator (2/2)■ Options Punch Unit Sensors and Motors■ Options Finisher Controller to Sensors (2/3)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Check the following for evidence of fault ordamage:■ Punch Unit■ Transport Rollers■ Exit RollersAre there any defects or misalignment?Replace anydamaged parts.Go to Step 2.2 Test the Finisher Entrance Sensor.Run the Service Diagnostics FinisherEntrance Sensor test.Does the sensor function correctly?Replace the EngineControl Board (seeBook 1).Replace thesensor. If the errorpersists, go toStep 3.3 Check the Entrance Sensor signal at theFinisher Control Board.Actuate the Entrance Sensor.Does the voltage across CN16-12 <=>ground change when the sensor isactuated?Replace theFinisher ControlBoard (page 5-46).Replace theharness.
