Xerox Phaser 7400

3-58 Phaser 7400 Color Printer Service Manual
Close Finisher Door J
The Front Cover (Door J) Sensor indicates that Door J 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 Table
Applicable Parts Wiring and Plug/Jack References
■ Door J Actuator
■ Door J Switch
■ Options Map 7, Finisher Sensor Locator (1/2)
■ Options Finisher Controller to Sensors (1/3)
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1
Check the following for evidence of fault or
damage:
■ Door J Actuator
■ Door J Switch
Replace the parts
concerned.
Go to Step 2.
2
Test the Door J Switch.
Run the Service Diagnostics Front Cover
test.
Does the sensor function correctly?
Replace the Engine
Control Board
(
page 8-112).
Go to Step 3.
3
Check the sensor connection.
Is CN4 on the Finisher Control Board
connected?
Go to Step 4. Reconnect the
sensor.
4
Check the Door J signal.
Does the voltage change on CN4-9 of the
Finisher Control Board when the switch is
activated?
Replace the
Finisher Control
Board.
Replace the
harness.