Description: Charge roller current leak
A charge roller current leak signal was detected.
Causes: • Charge roller damaged • High voltage supply board defective • PCU harness defective or disconnected
Code: 304
Description: Charge roller current correction error
The charge roller bias correction is performed twice even if the maximum charge roller bias (-2000V) is applied to the roller.
Causes: • ID sensor defective
Code: 321
Description: F-Gate error: No laser writing signal
The laser writing signal (F-GATE) does not go to LOW for more than 30 seconds after the copy paper reaches the registration sensor.
Causes: • BICU board defective • PCI harness between the controller board and the BICU defective or disconnected
Code: 322
Description: Synchronization error
The synchronization signal was not issued within 500 ms after the LD fired while the polygon motor was turning at the prescribed number of revolutions.
Description: LD drive current too high
The LD drive board applies more than 100 mA to the LD.
Causes: • LD unit defective (not enough power, due to aging) • Poor connection between the LD unit and the BICU board • BICU defective
Code: 327
Description: LD unit home position error 1
The LD unit home position sensor does not detect an on condition when the LD unit moves to its home position.
Causes: • HP sensor/harness defective • LD unit home position sensor defective • LD positioning motor harness defective • LD unit movement blocked because of incorrect connector routing