Xerox Phaser 7400

Error Messages and Codes 3-35
Jam at Finisher Punch Unit
Media did not clear the Finisher Entrance Sensor on time. This error represents a jam
at the Finisher entrance.
Applicable Status Code:
Code FN1: Jam at Finisher Punch
Initial Actions:
■ Check for obstructions or debris in the paper path.
■ Cycle printer power.
■ If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable 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 Table
Step Actions and Questions Yes No
1
Check the following for evidence of fault or
damage:
■ Punch Unit
■ Transport Rollers
■ Exit Rollers
Are there any defects or misalignment?
Replace any
damaged parts.
Go to Step 2.
2
Test the Finisher Entrance Sensor.
Run the Service Diagnostics Finisher
Entrance Sensor test.
Does the sensor function correctly?
Replace the Engine
Control Board
(
page 8-112).
Replace the
sensor. If the error
persists, go to
Step
3.
3
Check the Entrance Sensor signal at the
Finisher Control Board.
Actuate the Entrance Sensor.
Does the voltage across CN16-12 <=>
ground change when the sensor is
actuated?
Replace the
Finisher Control
Board.
Replace the
harness.