General Troubleshooting 3-41Finisher Upper Output Tray is Full, Unload PaperInitial Actions:■ Ensure that the output tray is empty and the actuator is in the correctposition.■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Stack Full Sensor ■ Options Map 7 Finisher Sensor Locator (1/2)■ Options Finisher Controller to Sensors (3/3)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Test the Upper Tray Stack Full Sensor.Run the Service Diagnostics Upper TrayFull Sensor test.Does the sensor state change when thesensor is actuated?Replace theFinisher ControlBoard.Go to Step 2.2 Check the sensor harness connections.Is the sensor connected?Go to Step 4. Connect and go toStep 3.3 Print a test print.Does the error still occur?Go to Step 4. Problem solved.4 Check sensor harness continuity.Is the harness conductive?Go to Step 5. Replace theSensor Harness.5 Check for +5 V to the Upper Tray Stack FullSensor.Is there +5 V on the Finisher ControlBoard?Go to Step 6. Replace theFinisher ControlBoard.6 Check the Finisher Control Board signal.Does the voltage across on the FinisherControl Board change when the sensor isactuated?Replace theFinisher ControlBoard (page 5-46).Replace the UpperTray Full StackSensor.
