3-36 Phaser 7400 Color Printer Options Service ManualClose Finisher Door HThe Upper Cover (Door H) Sensor indicates that Door H is open.Initial Actions:■ Ensure that the door is free of obstructions and fully closed.■ Verify that the actuator is not broken.■ Cycle printer power.■ If the problem persists, follow the procedure below.Troubleshooting Reference TableApplicable Parts Wiring and Plug/Jack References■ Upper Cover Sensor ■ Options Map 7, Finisher Sensor Locator (1/2)■ Options Finisher Controller to Sensors (1/3)Troubleshooting Procedure TableStep Actions and Questions Yes No1 Check the following for evidence of fault ordamage:■ Door H Actuator■ Door H SwitchReplace the partsconcerned.Go to Step 2.2 Test the Door H Switch.Run the Service Diagnostics Upper Covertest.Does the sensor function correctly?Replace the EngineControl Board (seeBook 1).Go to Step 3.3 Check the sensor connection.Is CN4 on the Finisher Control Boardconnected?Go to Step 4. Reconnect thesensor.4 Check the Door H signal.Does the voltage change on CN4-6 of theFinisher Control Board when the switch isactivated?Replace theFinisher ControlBoard (page 5-46).Replace theharness.
